text: #!/usr/bin/env python3
  # Copyright 2016-2017 The Meson development team
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  
  #     http://www.apache.org/licenses/LICENSE-2.0
  
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import stat
  import shlex
  import subprocess
  import re, json
  import tempfile
  import textwrap
  import os
  import shutil
  import unittest
  import platform
  from itertools import chain
  from unittest import mock
  from configparser import ConfigParser
  from glob import glob
  from pathlib import (PurePath, Path)
  
  import mesonbuild.mlog
  import mesonbuild.compilers
  import mesonbuild.environment
  import mesonbuild.mesonlib
  import mesonbuild.coredata
  import mesonbuild.modules.gnome
  from mesonbuild.interpreter import Interpreter, ObjectHolder
  from mesonbuild.mesonlib import (
      is_windows, is_osx, is_cygwin, is_dragonflybsd, is_openbsd,
      windows_proof_rmtree, python_command, version_compare,
      grab_leading_numbers, BuildDirLock
  )
  from mesonbuild.environment import detect_ninja
  from mesonbuild.mesonlib import MesonException, EnvironmentException
  from mesonbuild.dependencies import PkgConfigDependency, ExternalProgram
  import mesonbuild.modules.pkgconfig
  
  from run_tests import exe_suffix, get_fake_env, get_meson_script
  from run_tests import get_builddir_target_args, get_backend_commands, Backend
  from run_tests import ensure_backend_detects_changes, run_configure_inprocess
  from run_tests import run_mtest_inprocess
  from run_tests import FakeBuild, FakeCompilerOptions
  
  def get_dynamic_section_entry(fname, entry):
      if is_cygwin() or is_osx():
              raise unittest.SkipTest('Test only applicable to ELF platforms')
  
      try:
          raw_out = subprocess.check_output(['readelf', '-d', fname],
                                            universal_newlines=True)
      except FileNotFoundError:
          # FIXME: Try using depfixer.py:Elf() as a fallback
          raise unittest.SkipTest('readelf not found')
      pattern = re.compile(entry + r': \[(.*?)\]')
      for line in raw_out.split('\n'):
          m = pattern.search(line)
          if m is not None:
              return m.group(1)
      return None # The file did not contain the specified entry.
  
  def get_soname(fname):
      return get_dynamic_section_entry(fname, 'soname')
  
  def get_rpath(fname):
      return get_dynamic_section_entry(fname, r'(?:rpath|runpath)')
  
  def is_tarball():
      if not os.path.isdir('docs'):
          return True
      return False
  
  def is_ci():
      if 'TRAVIS' in os.environ or 'APPVEYOR' in os.environ:
          return True
      return False
  
  def _git_init(project_dir):
      subprocess.check_call(['git', 'init'], cwd=project_dir, stdout=subprocess.DEVNULL)
      subprocess.check_call(['git', 'config',
                             'user.name', 'Author Person'], cwd=project_dir)
      subprocess.check_call(['git', 'config',
                             'user.email', 'teh_coderz@example.com'], cwd=project_dir)
      subprocess.check_call('git add *', cwd=project_dir, shell=True,
                            stdout=subprocess.DEVNULL)
      subprocess.check_call(['git', 'commit', '-a', '-m', 'I am a project'], cwd=project_dir,
                            stdout=subprocess.DEVNULL)
  
  def skipIfNoPkgconfig(f):
      '''
      Skip this test if no pkg-config is found, unless we're on Travis or
      Appveyor CI.  This allows users to run our test suite without having
      pkg-config installed on, f.ex., macOS, while ensuring that our CI does not
      silently skip the test because of misconfiguration.
  
      Note: Yes, we provide pkg-config even while running Windows CI
      '''
      def wrapped(*args, **kwargs):
          if not is_ci() and shutil.which('pkg-config') is None:
              raise unittest.SkipTest('pkg-config not found')
          return f(*args, **kwargs)
      return wrapped
  
  class PatchModule:
      '''
      Fancy monkey-patching! Whee! Can't use mock.patch because it only
      patches in the local namespace.
      '''
      def __init__(self, func, name, impl):
          self.func = func
          assert(isinstance(name, str))
          self.func_name = name
          self.old_impl = None
          self.new_impl = impl
  
      def __enter__(self):
          self.old_impl = self.func
          exec('{} = self.new_impl'.format(self.func_name))
  
      def __exit__(self, *args):
          exec('{} = self.old_impl'.format(self.func_name))
  
  
  class InternalTests(unittest.TestCase):
  
      def test_version_number(self):
          searchfunc = mesonbuild.environment.search_version
          self.assertEqual(searchfunc('foobar 1.2.3'), '1.2.3')
          self.assertEqual(searchfunc('1.2.3'), '1.2.3')
          self.assertEqual(searchfunc('foobar 2016.10.28 1.2.3'), '1.2.3')
          self.assertEqual(searchfunc('2016.10.28 1.2.3'), '1.2.3')
          self.assertEqual(searchfunc('foobar 2016.10.128'), 'unknown version')
          self.assertEqual(searchfunc('2016.10.128'), 'unknown version')
  
      def test_mode_symbolic_to_bits(self):
          modefunc = mesonbuild.mesonlib.FileMode.perms_s_to_bits
          self.assertEqual(modefunc('---------'), 0)
          self.assertEqual(modefunc('r--------'), stat.S_IRUSR)
          self.assertEqual(modefunc('---r-----'), stat.S_IRGRP)
          self.assertEqual(modefunc('------r--'), stat.S_IROTH)
          self.assertEqual(modefunc('-w-------'), stat.S_IWUSR)
          self.assertEqual(modefunc('----w----'), stat.S_IWGRP)
          self.assertEqual(modefunc('-------w-'), stat.S_IWOTH)
          self.assertEqual(modefunc('--x------'), stat.S_IXUSR)
          self.assertEqual(modefunc('-----x---'), stat.S_IXGRP)
          self.assertEqual(modefunc('--------x'), stat.S_IXOTH)
          self.assertEqual(modefunc('--S------'), stat.S_ISUID)
          self.assertEqual(modefunc('-----S---'), stat.S_ISGID)
          self.assertEqual(modefunc('--------T'), stat.S_ISVTX)
          self.assertEqual(modefunc('--s------'), stat.S_ISUID | stat.S_IXUSR)
          self.assertEqual(modefunc('-----s---'), stat.S_ISGID | stat.S_IXGRP)
          self.assertEqual(modefunc('--------t'), stat.S_ISVTX | stat.S_IXOTH)
          self.assertEqual(modefunc('rwx------'), stat.S_IRWXU)
          self.assertEqual(modefunc('---rwx---'), stat.S_IRWXG)
          self.assertEqual(modefunc('------rwx'), stat.S_IRWXO)
          # We could keep listing combinations exhaustively but that seems
          # tedious and pointless. Just test a few more.
          self.assertEqual(modefunc('rwxr-xr-x'),
                           stat.S_IRWXU |
                           stat.S_IRGRP | stat.S_IXGRP |
                           stat.S_IROTH | stat.S_IXOTH)
          self.assertEqual(modefunc('rw-r--r--'),
                           stat.S_IRUSR | stat.S_IWUSR |
                           stat.S_IRGRP |
                           stat.S_IROTH)
          self.assertEqual(modefunc('rwsr-x---'),
                           stat.S_IRWXU | stat.S_ISUID |
                           stat.S_IRGRP | stat.S_IXGRP)
  
      def test_compiler_args_class(self):
          cargsfunc = mesonbuild.compilers.CompilerArgs
          cc = mesonbuild.compilers.CCompiler([], 'fake', False)
          # Test that bad initialization fails
          self.assertRaises(TypeError, cargsfunc, [])
          self.assertRaises(TypeError, cargsfunc, [], [])
          self.assertRaises(TypeError, cargsfunc, cc, [], [])
          # Test that empty initialization works
          a = cargsfunc(cc)
          self.assertEqual(a, [])
          # Test that list initialization works
          a = cargsfunc(['-I.', '-I..'], cc)
          self.assertEqual(a, ['-I.', '-I..'])
          # Test that there is no de-dup on initialization
          self.assertEqual(cargsfunc(['-I.', '-I.'], cc), ['-I.', '-I.'])
  
          ## Test that appending works
          a.append('-I..')
          self.assertEqual(a, ['-I..', '-I.'])
          a.append('-O3')
          self.assertEqual(a, ['-I..', '-I.', '-O3'])
  
          ## Test that in-place addition works
          a += ['-O2', '-O2']
          self.assertEqual(a, ['-I..', '-I.', '-O3', '-O2', '-O2'])
          # Test that removal works
          a.remove('-O2')
          self.assertEqual(a, ['-I..', '-I.', '-O3', '-O2'])
          # Test that de-dup happens on addition
          a += ['-Ifoo', '-Ifoo']
          self.assertEqual(a, ['-Ifoo', '-I..', '-I.', '-O3', '-O2'])
  
          # .extend() is just +=, so we don't test it
  
          ## Test that addition works
          # Test that adding a list with just one old arg works and yields the same array
          a = a + ['-Ifoo']
          self.assertEqual(a, ['-Ifoo', '-I..', '-I.', '-O3', '-O2'])
          # Test that adding a list with one arg new and one old works
          a = a + ['-Ifoo', '-Ibaz']
          self.assertEqual(a, ['-Ifoo', '-Ibaz', '-I..', '-I.', '-O3', '-O2'])
          # Test that adding args that must be prepended and appended works
          a = a + ['-Ibar', '-Wall']
          self.assertEqual(a, ['-Ibar', '-Ifoo', '-Ibaz', '-I..', '-I.', '-O3', '-O2', '-Wall'])
  
          ## Test that reflected addition works
          # Test that adding to a list with just one old arg works and yields the same array
          a = ['-Ifoo'] + a
          self.assertEqual(a, ['-Ibar', '-Ifoo', '-Ibaz', '-I..', '-I.', '-O3', '-O2', '-Wall'])
          # Test that adding to a list with just one new arg that is not pre-pended works
          a = ['-Werror'] + a
          self.assertEqual(a, ['-Ibar', '-Ifoo', '-Ibaz', '-I..', '-I.', '-Werror', '-O3', '-O2', '-Wall'])
          # Test that adding to a list with two new args preserves the order
          a = ['-Ldir', '-Lbah'] + a
          self.assertEqual(a, ['-Ibar', '-Ifoo', '-Ibaz', '-I..', '-I.', '-Ldir', '-Lbah', '-Werror', '-O3', '-O2', '-Wall'])
          # Test that adding to a list with old args does nothing
          a = ['-Ibar', '-Ibaz', '-Ifoo'] + a
          self.assertEqual(a, ['-Ibar', '-Ifoo', '-Ibaz', '-I..', '-I.', '-Ldir', '-Lbah', '-Werror', '-O3', '-O2', '-Wall'])
  
          ## Test that adding libraries works
          l = cargsfunc(cc, ['-Lfoodir', '-lfoo'])
          self.assertEqual(l, ['-Lfoodir', '-lfoo'])
          # Adding a library and a libpath appends both correctly
          l += ['-Lbardir', '-lbar']
          self.assertEqual(l, ['-Lbardir', '-Lfoodir', '-lfoo', '-lbar'])
          # Adding the same library again does nothing
          l += ['-lbar']
          self.assertEqual(l, ['-Lbardir', '-Lfoodir', '-lfoo', '-lbar'])
  
          ## Test that 'direct' append and extend works
          l = cargsfunc(cc, ['-Lfoodir', '-lfoo'])
          self.assertEqual(l, ['-Lfoodir', '-lfoo'])
          # Direct-adding a library and a libpath appends both correctly
          l.extend_direct(['-Lbardir', '-lbar'])
          self.assertEqual(l, ['-Lfoodir', '-lfoo', '-Lbardir', '-lbar'])
          # Direct-adding the same library again still adds it
          l.append_direct('-lbar')
          self.assertEqual(l, ['-Lfoodir', '-lfoo', '-Lbardir', '-lbar', '-lbar'])
          # Direct-adding with absolute path deduplicates
          l.append_direct('/libbaz.a')
          self.assertEqual(l, ['-Lfoodir', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a'])
          # Adding libbaz again does nothing
          l.append_direct('/libbaz.a')
          self.assertEqual(l, ['-Lfoodir', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a'])
  
      def test_compiler_args_class_gnuld(self):
          cargsfunc = mesonbuild.compilers.CompilerArgs
          ## Test --start/end-group
          gcc = mesonbuild.compilers.GnuCCompiler([], 'fake', 0, False)
          ## Test that 'direct' append and extend works
          l = cargsfunc(gcc, ['-Lfoodir', '-lfoo'])
          self.assertEqual(l.to_native(copy=True), ['-Lfoodir', '-Wl,--start-group', '-lfoo', '-Wl,--end-group'])
          # Direct-adding a library and a libpath appends both correctly
          l.extend_direct(['-Lbardir', '-lbar'])
          self.assertEqual(l.to_native(copy=True), ['-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-Wl,--end-group'])
          # Direct-adding the same library again still adds it
          l.append_direct('-lbar')
          self.assertEqual(l.to_native(copy=True), ['-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-lbar', '-Wl,--end-group'])
          # Direct-adding with absolute path deduplicates
          l.append_direct('/libbaz.a')
          self.assertEqual(l.to_native(copy=True), ['-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a', '-Wl,--end-group'])
          # Adding libbaz again does nothing
          l.append_direct('/libbaz.a')
          self.assertEqual(l.to_native(copy=True), ['-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a', '-Wl,--end-group'])
          # Adding a non-library argument doesn't include it in the group
          l += ['-Lfoo', '-Wl,--export-dynamic']
          self.assertEqual(l.to_native(copy=True), ['-Lfoo', '-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a', '-Wl,--end-group', '-Wl,--export-dynamic'])
          # -Wl,-lfoo is detected as a library and gets added to the group
          l.append('-Wl,-ldl')
          self.assertEqual(l.to_native(copy=True), ['-Lfoo', '-Lfoodir', '-Wl,--start-group', '-lfoo', '-Lbardir', '-lbar', '-lbar', '/libbaz.a', '-Wl,--export-dynamic', '-Wl,-ldl', '-Wl,--end-group'])
  
      def test_string_templates_substitution(self):
          dictfunc = mesonbuild.mesonlib.get_filenames_templates_dict
          substfunc = mesonbuild.mesonlib.substitute_values
          ME = mesonbuild.mesonlib.MesonException
  
          # Identity
          self.assertEqual(dictfunc([], []), {})
  
          # One input, no outputs
          inputs = ['bar/foo.c.in']
          outputs = []
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0],
               '@PLAINNAME@': 'foo.c.in', '@BASENAME@': 'foo.c'}
          # Check dictionary
          self.assertEqual(ret, d)
          # Check substitutions
          cmd = ['some', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), cmd)
          cmd = ['@INPUT@.out', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), [inputs[0] + '.out'] + cmd[1:])
          cmd = ['@INPUT0@.out', '@PLAINNAME@.ok', 'strings']
          self.assertEqual(substfunc(cmd, d),
                           [inputs[0] + '.out'] + [d['@PLAINNAME@'] + '.ok'] + cmd[2:])
          cmd = ['@INPUT@', '@BASENAME@.hah', 'strings']
          self.assertEqual(substfunc(cmd, d),
                           inputs + [d['@BASENAME@'] + '.hah'] + cmd[2:])
          cmd = ['@OUTPUT@']
          self.assertRaises(ME, substfunc, cmd, d)
  
          # One input, one output
          inputs = ['bar/foo.c.in']
          outputs = ['out.c']
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0],
               '@PLAINNAME@': 'foo.c.in', '@BASENAME@': 'foo.c',
               '@OUTPUT@': outputs, '@OUTPUT0@': outputs[0], '@OUTDIR@': '.'}
          # Check dictionary
          self.assertEqual(ret, d)
          # Check substitutions
          cmd = ['some', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), cmd)
          cmd = ['@INPUT@.out', '@OUTPUT@', 'strings']
          self.assertEqual(substfunc(cmd, d),
                           [inputs[0] + '.out'] + outputs + cmd[2:])
          cmd = ['@INPUT0@.out', '@PLAINNAME@.ok', '@OUTPUT0@']
          self.assertEqual(substfunc(cmd, d),
                           [inputs[0] + '.out', d['@PLAINNAME@'] + '.ok'] + outputs)
          cmd = ['@INPUT@', '@BASENAME@.hah', 'strings']
          self.assertEqual(substfunc(cmd, d),
                           inputs + [d['@BASENAME@'] + '.hah'] + cmd[2:])
  
          # One input, one output with a subdir
          outputs = ['dir/out.c']
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0],
               '@PLAINNAME@': 'foo.c.in', '@BASENAME@': 'foo.c',
               '@OUTPUT@': outputs, '@OUTPUT0@': outputs[0], '@OUTDIR@': 'dir'}
          # Check dictionary
          self.assertEqual(ret, d)
  
          # Two inputs, no outputs
          inputs = ['bar/foo.c.in', 'baz/foo.c.in']
          outputs = []
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0], '@INPUT1@': inputs[1]}
          # Check dictionary
          self.assertEqual(ret, d)
          # Check substitutions
          cmd = ['some', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), cmd)
          cmd = ['@INPUT@', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), inputs + cmd[1:])
          cmd = ['@INPUT0@.out', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), [inputs[0] + '.out'] + cmd[1:])
          cmd = ['@INPUT0@.out', '@INPUT1@.ok', 'strings']
          self.assertEqual(substfunc(cmd, d), [inputs[0] + '.out', inputs[1] + '.ok'] + cmd[2:])
          cmd = ['@INPUT0@', '@INPUT1@', 'strings']
          self.assertEqual(substfunc(cmd, d), inputs + cmd[2:])
          # Many inputs, can't use @INPUT@ like this
          cmd = ['@INPUT@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Not enough inputs
          cmd = ['@INPUT2@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Too many inputs
          cmd = ['@PLAINNAME@']
          self.assertRaises(ME, substfunc, cmd, d)
          cmd = ['@BASENAME@']
          self.assertRaises(ME, substfunc, cmd, d)
          # No outputs
          cmd = ['@OUTPUT@']
          self.assertRaises(ME, substfunc, cmd, d)
          cmd = ['@OUTPUT0@']
          self.assertRaises(ME, substfunc, cmd, d)
          cmd = ['@OUTDIR@']
          self.assertRaises(ME, substfunc, cmd, d)
  
          # Two inputs, one output
          outputs = ['dir/out.c']
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0], '@INPUT1@': inputs[1],
               '@OUTPUT@': outputs, '@OUTPUT0@': outputs[0], '@OUTDIR@': 'dir'}
          # Check dictionary
          self.assertEqual(ret, d)
          # Check substitutions
          cmd = ['some', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), cmd)
          cmd = ['@OUTPUT@', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), outputs + cmd[1:])
          cmd = ['@OUTPUT@.out', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), [outputs[0] + '.out'] + cmd[1:])
          cmd = ['@OUTPUT0@.out', '@INPUT1@.ok', 'strings']
          self.assertEqual(substfunc(cmd, d), [outputs[0] + '.out', inputs[1] + '.ok'] + cmd[2:])
          # Many inputs, can't use @INPUT@ like this
          cmd = ['@INPUT@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Not enough inputs
          cmd = ['@INPUT2@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Not enough outputs
          cmd = ['@OUTPUT2@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
  
          # Two inputs, two outputs
          outputs = ['dir/out.c', 'dir/out2.c']
          ret = dictfunc(inputs, outputs)
          d = {'@INPUT@': inputs, '@INPUT0@': inputs[0], '@INPUT1@': inputs[1],
               '@OUTPUT@': outputs, '@OUTPUT0@': outputs[0], '@OUTPUT1@': outputs[1],
               '@OUTDIR@': 'dir'}
          # Check dictionary
          self.assertEqual(ret, d)
          # Check substitutions
          cmd = ['some', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), cmd)
          cmd = ['@OUTPUT@', 'ordinary', 'strings']
          self.assertEqual(substfunc(cmd, d), outputs + cmd[1:])
          cmd = ['@OUTPUT0@', '@OUTPUT1@', 'strings']
          self.assertEqual(substfunc(cmd, d), outputs + cmd[2:])
          cmd = ['@OUTPUT0@.out', '@INPUT1@.ok', '@OUTDIR@']
          self.assertEqual(substfunc(cmd, d), [outputs[0] + '.out', inputs[1] + '.ok', 'dir'])
          # Many inputs, can't use @INPUT@ like this
          cmd = ['@INPUT@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Not enough inputs
          cmd = ['@INPUT2@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Not enough outputs
          cmd = ['@OUTPUT2@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
          # Many outputs, can't use @OUTPUT@ like this
          cmd = ['@OUTPUT@.out', 'ordinary', 'strings']
          self.assertRaises(ME, substfunc, cmd, d)
  
      def test_needs_exe_wrapper_override(self):
          config = ConfigParser()
          config['binaries'] = {
              'c': '\'/usr/bin/gcc\'',
          }
          config['host_machine'] = {
              'system': '\'linux\'',
              'cpu_family': '\'arm\'',
              'cpu': '\'armv7\'',
              'endian': '\'little\'',
          }
          # Can not be used as context manager because we need to
          # open it a second time and this is not possible on
          # Windows.
          configfile = tempfile.NamedTemporaryFile(mode='w+', delete=False)
          configfilename = configfile.name
          config.write(configfile)
          configfile.flush()
          configfile.close()
          detected_value = mesonbuild.environment.CrossBuildInfo(configfile.name).need_exe_wrapper()
          os.unlink(configfilename)
  
          desired_value = not detected_value
          config['properties'] = {
              'needs_exe_wrapper': 'true' if desired_value else 'false'
          }
  
          configfile = tempfile.NamedTemporaryFile(mode='w+', delete=False)
          configfilename = configfile.name
          config.write(configfile)
          configfile.close()
          forced_value = mesonbuild.environment.CrossBuildInfo(configfile.name).need_exe_wrapper()
          os.unlink(configfilename)
  
          self.assertEqual(forced_value, desired_value)
  
      def test_listify(self):
          listify = mesonbuild.mesonlib.listify
          # Test sanity
          self.assertEqual([1], listify(1))
          self.assertEqual([], listify([]))
          self.assertEqual([1], listify([1]))
          # Test flattening
          self.assertEqual([1, 2, 3], listify([1, [2, 3]]))
          self.assertEqual([1, 2, 3], listify([1, [2, [3]]]))
          self.assertEqual([1, [2, [3]]], listify([1, [2, [3]]], flatten=False))
          # Test flattening and unholdering
          holder1 = ObjectHolder(1)
          holder3 = ObjectHolder(3)
          self.assertEqual([holder1], listify(holder1))
          self.assertEqual([holder1], listify([holder1]))
          self.assertEqual([holder1, 2], listify([holder1, 2]))
          self.assertEqual([holder1, 2, 3], listify([holder1, 2, [3]]))
          self.assertEqual([1], listify(holder1, unholder=True))
          self.assertEqual([1], listify([holder1], unholder=True))
          self.assertEqual([1, 2], listify([holder1, 2], unholder=True))
          self.assertEqual([1, 2, 3], listify([holder1, 2, [holder3]], unholder=True))
          # Unholding doesn't work recursively when not flattening
          self.assertEqual([1, [2], [holder3]], listify([holder1, [2], [holder3]], unholder=True, flatten=False))
  
      def test_extract_as_list(self):
          extract = mesonbuild.mesonlib.extract_as_list
          # Test sanity
          kwargs = {'sources': [1, 2, 3]}
          self.assertEqual([1, 2, 3], extract(kwargs, 'sources'))
          self.assertEqual(kwargs, {'sources': [1, 2, 3]})
          self.assertEqual([1, 2, 3], extract(kwargs, 'sources', pop=True))
          self.assertEqual(kwargs, {})
          # Test unholding
          holder3 = ObjectHolder(3)
          kwargs = {'sources': [1, 2, holder3]}
          self.assertEqual([1, 2, 3], extract(kwargs, 'sources', unholder=True))
          self.assertEqual(kwargs, {'sources': [1, 2, holder3]})
          self.assertEqual([1, 2, 3], extract(kwargs, 'sources', unholder=True, pop=True))
          self.assertEqual(kwargs, {})
          # Test listification
          kwargs = {'sources': [1, 2, 3], 'pch_sources': [4, 5, 6]}
          self.assertEqual([[1, 2, 3], [4, 5, 6]], extract(kwargs, 'sources', 'pch_sources'))
  
      def test_pkgconfig_module(self):
  
          class Mock:
              pass
  
          mock = Mock()
          mock.pcdep = Mock()
          mock.pcdep.name = "some_name"
          mock.version_reqs = []
  
          # pkgconfig dependency as lib
          deps = mesonbuild.modules.pkgconfig.DependenciesHelper("thislib")
          deps.add_pub_libs([mock])
          self.assertEqual(deps.format_reqs(deps.pub_reqs), "some_name")
  
          # pkgconfig dependency as requires
          deps = mesonbuild.modules.pkgconfig.DependenciesHelper("thislib")
          deps.add_pub_reqs([mock])
          self.assertEqual(deps.format_reqs(deps.pub_reqs), "some_name")
  
      def _test_all_naming(self, cc, env, patterns, platform):
          shr = patterns[platform]['shared']
          stc = patterns[platform]['static']
          p = cc.get_library_naming(env, 'shared')
          self.assertEqual(p, shr)
          p = cc.get_library_naming(env, 'static')
          self.assertEqual(p, stc)
          p = cc.get_library_naming(env, 'static-shared')
          self.assertEqual(p, stc + shr)
          p = cc.get_library_naming(env, 'shared-static')
          self.assertEqual(p, shr + stc)
          p = cc.get_library_naming(env, 'default')
          self.assertEqual(p, shr + stc)
          # Test find library by mocking up openbsd
          if platform != 'openbsd':
              return
          with tempfile.TemporaryDirectory() as tmpdir:
              with open(os.path.join(tmpdir, 'libfoo.so.6.0'), 'w') as f:
                  f.write('')
              with open(os.path.join(tmpdir, 'libfoo.so.5.0'), 'w') as f:
                  f.write('')
              with open(os.path.join(tmpdir, 'libfoo.so.54.0'), 'w') as f:
                  f.write('')
              with open(os.path.join(tmpdir, 'libfoo.so.66a.0b'), 'w') as f:
                  f.write('')
              with open(os.path.join(tmpdir, 'libfoo.so.70.0.so.1'), 'w') as f:
                  f.write('')
              found = cc.find_library_real('foo', env, [tmpdir], '', 'default')
              self.assertEqual(os.path.basename(found[0]), 'libfoo.so.54.0')
  
      def test_find_library_patterns(self):
          '''
          Unit test for the library search patterns used by find_library()
          '''
          unix_static = ['lib{}.a', '{}.a']
          msvc_static = ['lib{}.a', 'lib{}.lib', '{}.a', '{}.lib']
          # This is the priority list of pattern matching for library searching
          patterns = {'openbsd': {'shared': ['lib{}.so', '{}.so', 'lib{}.so.[0-9]*.[0-9]*'],
                                  'static': unix_static},
                      'linux': {'shared': ['lib{}.so', '{}.so'],
                                'static': unix_static},
                      'darwin': {'shared': ['lib{}.dylib', '{}.dylib'],
                                 'static': unix_static},
                      'cygwin': {'shared': ['cyg{}.dll', 'cyg{}.dll.a', 'lib{}.dll',
                                            'lib{}.dll.a', '{}.dll', '{}.dll.a'],
                                 'static': ['cyg{}.a'] + unix_static},
                      'windows-msvc': {'shared': ['lib{}.lib', '{}.lib'],
                                       'static': msvc_static},
                      'windows-mingw': {'shared': ['lib{}.dll.a', 'lib{}.lib', 'lib{}.dll',
                                                   '{}.dll.a', '{}.lib', '{}.dll'],
                                        'static': msvc_static}}
          env = get_fake_env('', '', '')
          cc = env.detect_c_compiler(False)
          if is_osx():
              self._test_all_naming(cc, env, patterns, 'darwin')
          elif is_cygwin():
              self._test_all_naming(cc, env, patterns, 'cygwin')
          elif is_windows():
              if cc.get_id() == 'msvc':
                  self._test_all_naming(cc, env, patterns, 'windows-msvc')
              else:
                  self._test_all_naming(cc, env, patterns, 'windows-mingw')
          else:
              self._test_all_naming(cc, env, patterns, 'linux')
              # Mock OpenBSD since we don't have tests for it
              true = lambda x, y: True
              if not is_openbsd():
                  with PatchModule(mesonbuild.compilers.c.for_openbsd,
                                   'mesonbuild.compilers.c.for_openbsd', true):
                      self._test_all_naming(cc, env, patterns, 'openbsd')
              else:
                  self._test_all_naming(cc, env, patterns, 'openbsd')
              with PatchModule(mesonbuild.compilers.c.for_darwin,
                               'mesonbuild.compilers.c.for_darwin', true):
                  self._test_all_naming(cc, env, patterns, 'darwin')
              with PatchModule(mesonbuild.compilers.c.for_cygwin,
                               'mesonbuild.compilers.c.for_cygwin', true):
                  self._test_all_naming(cc, env, patterns, 'cygwin')
              with PatchModule(mesonbuild.compilers.c.for_windows,
                               'mesonbuild.compilers.c.for_windows', true):
                  self._test_all_naming(cc, env, patterns, 'windows-mingw')
              cc.id = 'msvc'
              with PatchModule(mesonbuild.compilers.c.for_windows,
                               'mesonbuild.compilers.c.for_windows', true):
                  self._test_all_naming(cc, env, patterns, 'windows-msvc')
  
      def test_pkgconfig_parse_libs(self):
          '''
          Unit test for parsing of pkg-config output to search for libraries
  
          https://github.com/mesonbuild/meson/issues/3951
          '''
          with tempfile.TemporaryDirectory() as tmpdir:
              pkgbin = ExternalProgram('pkg-config', command=['pkg-config'], silent=True)
              env = get_fake_env('', '', '')
              compiler = env.detect_c_compiler(False)
              env.coredata.compilers = {'c': compiler}
              env.coredata.compiler_options['c_link_args'] = FakeCompilerOptions()
              p1 = Path(tmpdir) / '1'
              p2 = Path(tmpdir) / '2'
              p1.mkdir()
              p2.mkdir()
              # libfoo.a is in one prefix
              (p1 / 'libfoo.a').open('w').close()
              # libbar.a is in both prefixes
              (p1 / 'libbar.a').open('w').close()
              (p2 / 'libbar.a').open('w').close()
              # Ensure that we never statically link to these
              (p1 / 'libpthread.a').open('w').close()
              (p1 / 'libm.a').open('w').close()
              (p1 / 'libc.a').open('w').close()
              (p1 / 'libdl.a').open('w').close()
              (p1 / 'librt.a').open('w').close()
  
              def fake_call_pkgbin(self, args, env=None):
                  if '--libs' not in args:
                      return 0, ''
                  if args[0] == 'foo':
                      return 0, '-L{} -lfoo -L{} -lbar'.format(p2.as_posix(), p1.as_posix())
                  if args[0] == 'bar':
                      return 0, '-L{} -lbar'.format(p2.as_posix())
                  if args[0] == 'internal':
                      return 0, '-L{} -lpthread -lm -lc -lrt -ldl'.format(p1.as_posix())
  
              old_call = PkgConfigDependency._call_pkgbin
              old_check = PkgConfigDependency.check_pkgconfig
              PkgConfigDependency._call_pkgbin = fake_call_pkgbin
              PkgConfigDependency.check_pkgconfig = lambda x: pkgbin
              # Test begins
              kwargs = {'required': True, 'silent': True}
              foo_dep = PkgConfigDependency('foo', env, kwargs)
              self.assertEqual(foo_dep.get_link_args(),
                               [(p1 / 'libfoo.a').as_posix(), (p2 / 'libbar.a').as_posix()])
              bar_dep = PkgConfigDependency('bar', env, kwargs)
              self.assertEqual(bar_dep.get_link_args(), [(p2 / 'libbar.a').as_posix()])
              internal_dep = PkgConfigDependency('internal', env, kwargs)
              if compiler.get_id() == 'msvc':
                  self.assertEqual(internal_dep.get_link_args(), [])
              else:
                  link_args = internal_dep.get_link_args()
                  for link_arg in link_args:
                      for lib in ('pthread', 'm', 'c', 'dl', 'rt'):
                          self.assertNotIn('lib{}.a'.format(lib), link_arg, msg=link_args)
              # Test ends
              PkgConfigDependency._call_pkgbin = old_call
              PkgConfigDependency.check_pkgconfig = old_check
              # Reset dependency class to ensure that in-process configure doesn't mess up
              PkgConfigDependency.pkgbin_cache = {}
              PkgConfigDependency.class_pkgbin = None
  
  
  @unittest.skipIf(is_tarball(), 'Skipping because this is a tarball release')
  class DataTests(unittest.TestCase):
  
      def test_snippets(self):
          hashcounter = re.compile('^ *(#)+')
          snippet_dir = Path('docs/markdown/snippets')
          self.assertTrue(snippet_dir.is_dir())
          for f in snippet_dir.glob('*'):
              self.assertTrue(f.is_file())
              if f.parts[-1].endswith('~'):
                  continue
              if f.suffix == '.md':
                  in_code_block = False
                  with f.open() as snippet:
                      for line in snippet:
                          if line.startswith('    '):
                              continue
                          if line.startswith('```'):
                              in_code_block = not in_code_block
                          if in_code_block:
                              continue
                          m = re.match(hashcounter, line)
                          if m:
                              self.assertEqual(len(m.group(0)), 2, 'All headings in snippets must have two hash symbols: ' + f.name)
                  self.assertFalse(in_code_block, 'Unclosed code block.')
              else:
                  if f.name != 'add_release_note_snippets_here':
                      self.assertTrue(False, 'A file without .md suffix in snippets dir: ' + f.name)
  
      def test_compiler_options_documented(self):
          '''
          Test that C and C++ compiler options and base options are documented in
          Builtin-Options.md. Only tests the default compiler for the current
          platform on the CI.
          '''
          md = None
          with open('docs/markdown/Builtin-options.md') as f:
              md = f.read()
          self.assertIsNotNone(md)
          env = get_fake_env('', '', '')
          # FIXME: Support other compilers
          cc = env.detect_c_compiler(False)
          cpp = env.detect_cpp_compiler(False)
          for comp in (cc, cpp):
              for opt in comp.get_options().keys():
                  self.assertIn(opt, md)
              for opt in comp.base_options:
                  self.assertIn(opt, md)
          self.assertNotIn('b_unknown', md)
  
      def test_cpu_families_documented(self):
          with open("docs/markdown/Reference-tables.md") as f:
              md = f.read()
          self.assertIsNotNone(md)
  
          sections = list(re.finditer(r"^## (.+)$", md, re.MULTILINE))
          for s1, s2 in zip(sections[::2], sections[1::2]):
              if s1.group(1) == "CPU families":
                  # Extract the content for this section
                  content = md[s1.end():s2.start()]
                  # Find the list entries
                  arches = [m.group(1) for m in re.finditer(r"^\| (\w+) +\|", content, re.MULTILINE)]
                  # Drop the header
                  arches = set(arches[1:])
                  self.assertEqual(arches, set(mesonbuild.environment.known_cpu_families))
  
      def test_markdown_files_in_sitemap(self):
          '''
          Test that each markdown files in docs/markdown is referenced in sitemap.txt
          '''
          with open("docs/sitemap.txt") as f:
              md = f.read()
          self.assertIsNotNone(md)
          toc = list(m.group(1) for m in re.finditer(r"^\s*(\w.*)$", md, re.MULTILINE))
          markdownfiles = [f.name for f in Path("docs/markdown").iterdir() if f.is_file() and f.suffix == '.md']
          exceptions = ['_Sidebar.md']
          for f in markdownfiles:
              if f not in exceptions:
                  self.assertIn(f, toc)
  
      def test_syntax_highlighting_files(self):
          '''
          Ensure that syntax highlighting files were updated for new functions in
          the global namespace in build files.
          '''
          env = get_fake_env('', '', '')
          interp = Interpreter(FakeBuild(env), mock=True)
          with open('data/syntax-highlighting/vim/syntax/meson.vim') as f:
              res = re.search(r'syn keyword mesonBuiltin(\s+\\\s\w+)+', f.read(), re.MULTILINE)
              defined = set([a.strip() for a in res.group().split('\\')][1:])
              self.assertEqual(defined, set(chain(interp.funcs.keys(), interp.builtin.keys())))
  
  
  class BasePlatformTests(unittest.TestCase):
      def setUp(self):
          super().setUp()
          src_root = os.path.dirname(__file__)
          src_root = os.path.join(os.getcwd(), src_root)
          self.src_root = src_root
          self.prefix = '/usr'
          self.libdir = 'lib'
          # Get the backend
          # FIXME: Extract this from argv?
          self.backend = getattr(Backend, os.environ.get('MESON_UNIT_TEST_BACKEND', 'ninja'))
          self.meson_args = ['--backend=' + self.backend.name]
          self.meson_cross_file = None
          self.meson_command = python_command + [get_meson_script()]
          self.setup_command = self.meson_command + self.meson_args
          self.mconf_command = self.meson_command + ['configure']
          self.mintro_command = self.meson_command + ['introspect']
          self.wrap_command = self.meson_command + ['wrap']
          # Backend-specific build commands
          self.build_command, self.clean_command, self.test_command, self.install_command, \
              self.uninstall_command = get_backend_commands(self.backend)
          # Test directories
          self.common_test_dir = os.path.join(src_root, 'test cases/common')
          self.vala_test_dir = os.path.join(src_root, 'test cases/vala')
          self.framework_test_dir = os.path.join(src_root, 'test cases/frameworks')
          self.unit_test_dir = os.path.join(src_root, 'test cases/unit')
          # Misc stuff
          self.orig_env = os.environ.copy()
          if self.backend is Backend.ninja:
              self.no_rebuild_stdout = 'ninja: no work to do.'
          else:
              # VS doesn't have a stable output when no changes are done
              # XCode backend is untested with unit tests, help welcome!
              self.no_rebuild_stdout = 'UNKNOWN BACKEND {!r}'.format(self.backend.name)
  
          self.builddirs = []
          self.new_builddir()
  
      def change_builddir(self, newdir):
          self.builddir = newdir
          self.privatedir = os.path.join(self.builddir, 'meson-private')
          self.logdir = os.path.join(self.builddir, 'meson-logs')
          self.installdir = os.path.join(self.builddir, 'install')
          self.distdir = os.path.join(self.builddir, 'meson-dist')
          self.mtest_command = self.meson_command + ['test', '-C', self.builddir]
          self.builddirs.append(self.builddir)
  
      def new_builddir(self):
          # In case the directory is inside a symlinked directory, find the real
          # path otherwise we might not find the srcdir from inside the builddir.
          newdir = os.path.realpath(tempfile.mkdtemp())
          self.change_builddir(newdir)
  
      def _print_meson_log(self):
          log = os.path.join(self.logdir, 'meson-log.txt')
          if not os.path.isfile(log):
              print("{!r} doesn't exist".format(log))
              return
          with open(log, 'r', encoding='utf-8') as f:
              print(f.read())
  
      def tearDown(self):
          for path in self.builddirs:
              try:
                  windows_proof_rmtree(path)
              except FileNotFoundError:
                  pass
          os.environ.clear()
          os.environ.update(self.orig_env)
          super().tearDown()
  
      def _run(self, command, workdir=None):
          '''
          Run a command while printing the stdout and stderr to stdout,
          and also return a copy of it
          '''
          # If this call hangs CI will just abort. It is very hard to distinguish
          # between CI issue and test bug in that case. Set timeout and fail loud
          # instead.
          p = subprocess.run(command, stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT, env=os.environ.copy(),
                             universal_newlines=True, cwd=workdir, timeout=60 * 5)
          print(p.stdout)
          if p.returncode != 0:
              if 'MESON_SKIP_TEST' in p.stdout:
                  raise unittest.SkipTest('Project requested skipping.')
              raise subprocess.CalledProcessError(p.returncode, command, output=p.stdout)
          return p.stdout
  
      def init(self, srcdir, extra_args=None, default_args=True, inprocess=False):
          self.assertPathExists(srcdir)
          if extra_args is None:
              extra_args = []
          if not isinstance(extra_args, list):
              extra_args = [extra_args]
          args = [srcdir, self.builddir]
          if default_args:
              args += ['--prefix', self.prefix,
                       '--libdir', self.libdir]
              if self.meson_cross_file:
                  args += ['--cross-file', self.meson_cross_file]
          self.privatedir = os.path.join(self.builddir, 'meson-private')
          if inprocess:
              try:
                  (returncode, out, err) = run_configure_inprocess(self.meson_args + args + extra_args)
                  if 'MESON_SKIP_TEST' in out:
                      raise unittest.SkipTest('Project requested skipping.')
                  if returncode != 0:
                      self._print_meson_log()
                      print('Stdout:\n')
                      print(out)
                      print('Stderr:\n')
                      print(err)
                      raise RuntimeError('Configure failed')
              except:
                  self._print_meson_log()
                  raise
              finally:
                  # Close log file to satisfy Windows file locking
                  mesonbuild.mlog.shutdown()
                  mesonbuild.mlog.log_dir = None
                  mesonbuild.mlog.log_file = None
          else:
              try:
                  out = self._run(self.setup_command + args + extra_args)
              except unittest.SkipTest:
                  raise unittest.SkipTest('Project requested skipping: ' + srcdir)
              except:
                  self._print_meson_log()
                  raise
          return out
  
      def build(self, target=None, extra_args=None):
          if extra_args is None:
              extra_args = []
          # Add arguments for building the target (if specified),
          # and using the build dir (if required, with VS)
          args = get_builddir_target_args(self.backend, self.builddir, target)
          return self._run(self.build_command + args + extra_args, workdir=self.builddir)
  
      def clean(self):
          dir_args = get_builddir_target_args(self.backend, self.builddir, None)
          self._run(self.clean_command + dir_args, workdir=self.builddir)
  
      def run_tests(self, inprocess=False):
          if not inprocess:
              self._run(self.test_command, workdir=self.builddir)
          else:
              run_mtest_inprocess(['-C', self.builddir])
  
      def install(self, *, use_destdir=True):
          if self.backend is not Backend.ninja:
              raise unittest.SkipTest('{!r} backend can\'t install files'.format(self.backend.name))
          if use_destdir:
              os.environ['DESTDIR'] = self.installdir
          self._run(self.install_command, workdir=self.builddir)
  
      def uninstall(self):
          self._run(self.uninstall_command, workdir=self.builddir)
  
      def run_target(self, target):
          '''
          Run a Ninja target while printing the stdout and stderr to stdout,
          and also return a copy of it
          '''
          return self.build(target=target)
  
      def setconf(self, arg, will_build=True):
          if not isinstance(arg, list):
              arg = [arg]
          if will_build:
              ensure_backend_detects_changes(self.backend)
          self._run(self.mconf_command + arg + [self.builddir])
  
      def wipe(self):
          windows_proof_rmtree(self.builddir)
  
      def utime(self, f):
          ensure_backend_detects_changes(self.backend)
          os.utime(f)
  
      def get_compdb(self):
          if self.backend is not Backend.ninja:
              raise unittest.SkipTest('Compiler db not available with {} backend'.format(self.backend.name))
          with open(os.path.join(self.builddir, 'compile_commands.json')) as ifile:
              contents = json.load(ifile)
          # If Ninja is using .rsp files, generate them, read their contents, and
          # replace it as the command for all compile commands in the parsed json.
          if len(contents) > 0 and contents[0]['command'].endswith('.rsp'):
              # Pretend to build so that the rsp files are generated
              self.build(extra_args=['-d', 'keeprsp', '-n'])
              for each in contents:
                  # Extract the actual command from the rsp file
                  compiler, rsp = each['command'].split(' @')
                  rsp = os.path.join(self.builddir, rsp)
                  # Replace the command with its contents
                  with open(rsp, 'r', encoding='utf-8') as f:
                      each['command'] = compiler + ' ' + f.read()
          return contents
  
      def get_meson_log(self):
          with open(os.path.join(self.builddir, 'meson-logs', 'meson-log.txt')) as f:
              return f.readlines()
  
      def get_meson_log_compiler_checks(self):
          '''
          Fetch a list command-lines run by meson for compiler checks.
          Each command-line is returned as a list of arguments.
          '''
          log = self.get_meson_log()
          prefix = 'Command line:'
          cmds = [l[len(prefix):].split() for l in log if l.startswith(prefix)]
          return cmds
  
      def introspect(self, args):
          if isinstance(args, str):
              args = [args]
          out = subprocess.check_output(self.mintro_command + args + [self.builddir],
                                        universal_newlines=True)
          return json.loads(out)
  
      def assertPathEqual(self, path1, path2):
          '''
          Handles a lot of platform-specific quirks related to paths such as
          separator, case-sensitivity, etc.
          '''
          self.assertEqual(PurePath(path1), PurePath(path2))
  
      def assertPathBasenameEqual(self, path, basename):
          msg = '{!r} does not end with {!r}'.format(path, basename)
          # We cannot use os.path.basename because it returns '' when the path
          # ends with '/' for some silly reason. This is not how the UNIX utility
          # `basename` works.
          path_basename = PurePath(path).parts[-1]
          self.assertEqual(PurePath(path_basename), PurePath(basename), msg)
  
      def assertBuildIsNoop(self):
          ret = self.build()
          if self.backend is Backend.ninja:
              self.assertEqual(ret.split('\n')[-2], self.no_rebuild_stdout)
          elif self.backend is Backend.vs:
              # Ensure that some target said that no rebuild was done
              self.assertIn('CustomBuild:\n  All outputs are up-to-date.', ret)
              self.assertIn('ClCompile:\n  All outputs are up-to-date.', ret)
              self.assertIn('Link:\n  All outputs are up-to-date.', ret)
              # Ensure that no targets were built
              clre = re.compile('ClCompile:\n [^\n]*cl', flags=re.IGNORECASE)
              linkre = re.compile('Link:\n [^\n]*link', flags=re.IGNORECASE)
              self.assertNotRegex(ret, clre)
              self.assertNotRegex(ret, linkre)
          elif self.backend is Backend.xcode:
              raise unittest.SkipTest('Please help us fix this test on the xcode backend')
          else:
              raise RuntimeError('Invalid backend: {!r}'.format(self.backend.name))
  
      def assertRebuiltTarget(self, target):
          ret = self.build()
          if self.backend is Backend.ninja:
              self.assertIn('Linking target {}'.format(target), ret)
          elif self.backend is Backend.vs:
              # Ensure that this target was rebuilt
              linkre = re.compile('Link:\n [^\n]*link[^\n]*' + target, flags=re.IGNORECASE)
              self.assertRegex(ret, linkre)
          elif self.backend is Backend.xcode:
              raise unittest.SkipTest('Please help us fix this test on the xcode backend')
          else:
              raise RuntimeError('Invalid backend: {!r}'.format(self.backend.name))
  
      def assertPathExists(self, path):
          m = 'Path {!r} should exist'.format(path)
          self.assertTrue(os.path.exists(path), msg=m)
  
      def assertPathDoesNotExist(self, path):
          m = 'Path {!r} should not exist'.format(path)
          self.assertFalse(os.path.exists(path), msg=m)
  
  
  class AllPlatformTests(BasePlatformTests):
      '''
      Tests that should run on all platforms
      '''
      def test_default_options_prefix(self):
          '''
          Tests that setting a prefix in default_options in project() works.
          Can't be an ordinary test because we pass --prefix to meson there.
          https://github.com/mesonbuild/meson/issues/1349
          '''
          testdir = os.path.join(self.common_test_dir, '91 default options')
          self.init(testdir, default_args=False)
          opts = self.introspect('--buildoptions')
          for opt in opts:
              if opt['name'] == 'prefix':
                  prefix = opt['value']
          self.assertEqual(prefix, '/absoluteprefix')
  
      def test_absolute_prefix_libdir(self):
          '''
          Tests that setting absolute paths for --prefix and --libdir work. Can't
          be an ordinary test because these are set via the command-line.
          https://github.com/mesonbuild/meson/issues/1341
          https://github.com/mesonbuild/meson/issues/1345
          '''
          testdir = os.path.join(self.common_test_dir, '91 default options')
          prefix = '/someabs'
          libdir = 'libdir'
          extra_args = ['--prefix=' + prefix,
                        # This can just be a relative path, but we want to test
                        # that passing this as an absolute path also works
                        '--libdir=' + prefix + '/' + libdir]
          self.init(testdir, extra_args, default_args=False)
          opts = self.introspect('--buildoptions')
          for opt in opts:
              if opt['name'] == 'prefix':
                  self.assertEqual(prefix, opt['value'])
              elif opt['name'] == 'libdir':
                  self.assertEqual(libdir, opt['value'])
  
      def test_libdir_must_be_inside_prefix(self):
          '''
          Tests that libdir is forced to be inside prefix no matter how it is set.
          Must be a unit test for obvious reasons.
          '''
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          # libdir being inside prefix is ok
          args = ['--prefix', '/opt', '--libdir', '/opt/lib32']
          self.init(testdir, args)
          self.wipe()
          # libdir not being inside prefix is not ok
          args = ['--prefix', '/usr', '--libdir', '/opt/lib32']
          self.assertRaises(subprocess.CalledProcessError, self.init, testdir, args)
          self.wipe()
          # libdir must be inside prefix even when set via mesonconf
          self.init(testdir)
          self.assertRaises(subprocess.CalledProcessError, self.setconf, '-Dlibdir=/opt', False)
  
      def test_prefix_dependent_defaults(self):
          '''
          Tests that configured directory paths are set to prefix dependent
          defaults.
          '''
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          expected = {
              '/opt': {'prefix': '/opt',
                       'bindir': 'bin', 'datadir': 'share', 'includedir': 'include',
                       'infodir': 'share/info',
                       'libexecdir': 'libexec', 'localedir': 'share/locale',
                       'localstatedir': 'var', 'mandir': 'share/man',
                       'sbindir': 'sbin', 'sharedstatedir': 'com',
                       'sysconfdir': 'etc'},
              '/usr': {'prefix': '/usr',
                       'bindir': 'bin', 'datadir': 'share', 'includedir': 'include',
                       'infodir': 'share/info',
                       'libexecdir': 'libexec', 'localedir': 'share/locale',
                       'localstatedir': '/var', 'mandir': 'share/man',
                       'sbindir': 'sbin', 'sharedstatedir': '/var/lib',
                       'sysconfdir': '/etc'},
              '/usr/local': {'prefix': '/usr/local',
                             'bindir': 'bin', 'datadir': 'share',
                             'includedir': 'include', 'infodir': 'share/info',
                             'libexecdir': 'libexec',
                             'localedir': 'share/locale',
                             'localstatedir': '/var/local', 'mandir': 'share/man',
                             'sbindir': 'sbin', 'sharedstatedir': '/var/local/lib',
                             'sysconfdir': 'etc'},
              # N.B. We don't check 'libdir' as it's platform dependent, see
              # default_libdir():
          }
          for prefix in expected:
              args = ['--prefix', prefix]
              self.init(testdir, args, default_args=False)
              opts = self.introspect('--buildoptions')
              for opt in opts:
                  name = opt['name']
                  value = opt['value']
                  if name in expected[prefix]:
                      self.assertEqual(value, expected[prefix][name])
              self.wipe()
  
      def test_default_options_prefix_dependent_defaults(self):
          '''
          Tests that setting a prefix in default_options in project() sets prefix
          dependent defaults for other options, and that those defaults can
          be overridden in default_options or by the command line.
          '''
          testdir = os.path.join(self.common_test_dir, '169 default options prefix dependent defaults')
          expected = {
              '':
              {'prefix':         '/usr',
               'sysconfdir':     '/etc',
               'localstatedir':  '/var',
               'sharedstatedir': '/sharedstate'},
              '--prefix=/usr':
              {'prefix':         '/usr',
               'sysconfdir':     '/etc',
               'localstatedir':  '/var',
               'sharedstatedir': '/sharedstate'},
              '--sharedstatedir=/var/state':
              {'prefix':         '/usr',
               'sysconfdir':     '/etc',
               'localstatedir':  '/var',
               'sharedstatedir': '/var/state'},
              '--sharedstatedir=/var/state --prefix=/usr --sysconfdir=sysconf':
              {'prefix':         '/usr',
               'sysconfdir':     'sysconf',
               'localstatedir':  '/var',
               'sharedstatedir': '/var/state'},
          }
          for args in expected:
              self.init(testdir, args.split(), default_args=False)
              opts = self.introspect('--buildoptions')
              for opt in opts:
                  name = opt['name']
                  value = opt['value']
                  if name in expected[args]:
                      self.assertEqual(value, expected[args][name])
              self.wipe()
  
      def test_static_library_overwrite(self):
          '''
          Tests that static libraries are never appended to, always overwritten.
          Has to be a unit test because this involves building a project,
          reconfiguring, and building it again so that `ar` is run twice on the
          same static library.
          https://github.com/mesonbuild/meson/issues/1355
          '''
          testdir = os.path.join(self.common_test_dir, '3 static')
          env = get_fake_env(testdir, self.builddir, self.prefix)
          cc = env.detect_c_compiler(False)
          static_linker = env.detect_static_linker(cc)
          if is_windows():
              raise unittest.SkipTest('https://github.com/mesonbuild/meson/issues/1526')
          if not isinstance(static_linker, mesonbuild.linkers.ArLinker):
              raise unittest.SkipTest('static linker is not `ar`')
          # Configure
          self.init(testdir)
          # Get name of static library
          targets = self.introspect('--targets')
          self.assertEqual(len(targets), 1)
          libname = targets[0]['filename']
          # Build and get contents of static library
          self.build()
          before = self._run(['ar', 't', os.path.join(self.builddir, libname)]).split()
          # Filter out non-object-file contents
          before = [f for f in before if f.endswith(('.o', '.obj'))]
          # Static library should contain only one object
          self.assertEqual(len(before), 1, msg=before)
          # Change the source to be built into the static library
          self.setconf('-Dsource=libfile2.c')
          self.build()
          after = self._run(['ar', 't', os.path.join(self.builddir, libname)]).split()
          # Filter out non-object-file contents
          after = [f for f in after if f.endswith(('.o', '.obj'))]
          # Static library should contain only one object
          self.assertEqual(len(after), 1, msg=after)
          # and the object must have changed
          self.assertNotEqual(before, after)
  
      def test_static_compile_order(self):
          '''
          Test that the order of files in a compiler command-line while compiling
          and linking statically is deterministic. This can't be an ordinary test
          case because we need to inspect the compiler database.
          https://github.com/mesonbuild/meson/pull/951
          '''
          testdir = os.path.join(self.common_test_dir, '5 linkstatic')
          self.init(testdir)
          compdb = self.get_compdb()
          # Rules will get written out in this order
          self.assertTrue(compdb[0]['file'].endswith("libfile.c"))
          self.assertTrue(compdb[1]['file'].endswith("libfile2.c"))
          self.assertTrue(compdb[2]['file'].endswith("libfile3.c"))
          self.assertTrue(compdb[3]['file'].endswith("libfile4.c"))
          # FIXME: We don't have access to the linker command
  
      def test_run_target_files_path(self):
          '''
          Test that run_targets are run from the correct directory
          https://github.com/mesonbuild/meson/issues/957
          '''
          testdir = os.path.join(self.common_test_dir, '55 run target')
          self.init(testdir)
          self.run_target('check_exists')
  
      def test_install_introspection(self):
          '''
          Tests that the Meson introspection API exposes install filenames correctly
          https://github.com/mesonbuild/meson/issues/829
          '''
          if self.backend is not Backend.ninja:
              raise unittest.SkipTest('{!r} backend can\'t install files'.format(self.backend.name))
          testdir = os.path.join(self.common_test_dir, '8 install')
          self.init(testdir)
          intro = self.introspect('--targets')
          if intro[0]['type'] == 'executable':
              intro = intro[::-1]
          self.assertPathEqual(intro[0]['install_filename'], '/usr/lib/libstat.a')
          self.assertPathEqual(intro[1]['install_filename'], '/usr/bin/prog' + exe_suffix)
  
      def test_uninstall(self):
          exename = os.path.join(self.installdir, 'usr/bin/prog' + exe_suffix)
          testdir = os.path.join(self.common_test_dir, '8 install')
          self.init(testdir)
          self.assertPathDoesNotExist(exename)
          self.install()
          self.assertPathExists(exename)
          self.uninstall()
          self.assertPathDoesNotExist(exename)
  
      def test_forcefallback(self):
          testdir = os.path.join(self.unit_test_dir, '31 forcefallback')
          self.init(testdir, ['--wrap-mode=forcefallback'])
          self.build()
          self.run_tests()
  
      def test_testsetups(self):
          if not shutil.which('valgrind'):
                  raise unittest.SkipTest('Valgrind not installed.')
          testdir = os.path.join(self.unit_test_dir, '2 testsetups')
          self.init(testdir)
          self.build()
          # Run tests without setup
          self.run_tests()
          with open(os.path.join(self.logdir, 'testlog.txt')) as f:
              basic_log = f.read()
          # Run buggy test with setup that has env that will make it fail
          self.assertRaises(subprocess.CalledProcessError,
                            self._run, self.mtest_command + ['--setup=valgrind'])
          with open(os.path.join(self.logdir, 'testlog-valgrind.txt')) as f:
              vg_log = f.read()
          self.assertFalse('TEST_ENV is set' in basic_log)
          self.assertFalse('Memcheck' in basic_log)
          self.assertTrue('TEST_ENV is set' in vg_log)
          self.assertTrue('Memcheck' in vg_log)
          # Run buggy test with setup without env that will pass
          self._run(self.mtest_command + ['--setup=wrapper'])
          # Setup with no properties works
          self._run(self.mtest_command + ['--setup=empty'])
          # Setup with only env works
          self._run(self.mtest_command + ['--setup=onlyenv'])
          self._run(self.mtest_command + ['--setup=onlyenv2'])
          self._run(self.mtest_command + ['--setup=onlyenv3'])
          # Setup with only a timeout works
          self._run(self.mtest_command + ['--setup=timeout'])
  
      def test_testsetup_selection(self):
          testdir = os.path.join(self.unit_test_dir, '14 testsetup selection')
          self.init(testdir)
          self.build()
  
          # Run tests without setup
          self.run_tests()
  
          self.assertRaises(subprocess.CalledProcessError, self._run, self.mtest_command + ['--setup=missingfromfoo'])
          self._run(self.mtest_command + ['--setup=missingfromfoo', '--no-suite=foo:'])
  
          self._run(self.mtest_command + ['--setup=worksforall'])
          self._run(self.mtest_command + ['--setup=main:worksforall'])
  
          self.assertRaises(subprocess.CalledProcessError, self._run,
                            self.mtest_command + ['--setup=onlyinbar'])
          self.assertRaises(subprocess.CalledProcessError, self._run,
                            self.mtest_command + ['--setup=onlyinbar', '--no-suite=main:'])
          self._run(self.mtest_command + ['--setup=onlyinbar', '--no-suite=main:', '--no-suite=foo:'])
          self._run(self.mtest_command + ['--setup=bar:onlyinbar'])
          self.assertRaises(subprocess.CalledProcessError, self._run,
                            self.mtest_command + ['--setup=foo:onlyinbar'])
          self.assertRaises(subprocess.CalledProcessError, self._run,
                            self.mtest_command + ['--setup=main:onlyinbar'])
  
      def assertFailedTestCount(self, failure_count, command):
          try:
              self._run(command)
              self.assertEqual(0, failure_count, 'Expected %d tests to fail.' % failure_count)
          except subprocess.CalledProcessError as e:
              self.assertEqual(e.returncode, failure_count)
  
      def test_suite_selection(self):
          testdir = os.path.join(self.unit_test_dir, '4 suite selection')
          self.init(testdir)
          self.build()
  
          self.assertFailedTestCount(3, self.mtest_command)
  
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', ':success'])
          self.assertFailedTestCount(3, self.mtest_command + ['--suite', ':fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', ':success'])
          self.assertFailedTestCount(0, self.mtest_command + ['--no-suite', ':fail'])
  
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj'])
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc'])
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail'])
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix'])
  
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'mainprj:fail'])
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'mainprj:success'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'mainprj:fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'mainprj:success'])
  
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail:fail'])
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjfail:success'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjfail:fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjfail:success'])
  
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:fail'])
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjsucc:success'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjsucc:success'])
  
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjmix:fail'])
          self.assertFailedTestCount(0, self.mtest_command + ['--suite', 'subprjmix:success'])
          self.assertFailedTestCount(2, self.mtest_command + ['--no-suite', 'subprjmix:fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--no-suite', 'subprjmix:success'])
  
          self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix:fail'])
          self.assertFailedTestCount(3, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj'])
          self.assertFailedTestCount(2, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail'])
          self.assertFailedTestCount(1, self.mtest_command + ['--suite', 'subprjfail', '--suite', 'subprjmix', '--suite', 'mainprj', '--no-suite', 'subprjmix:fail', 'mainprj-failing_test'])
  
          self.assertFailedTestCount(1, self.mtest_command + ['--no-suite', 'subprjfail:fail', '--no-suite', 'subprjmix:fail'])
  
      def test_build_by_default(self):
          testdir = os.path.join(self.common_test_dir, '134 build by default')
          self.init(testdir)
          self.build()
          genfile1 = os.path.join(self.builddir, 'generated1.dat')
          genfile2 = os.path.join(self.builddir, 'generated2.dat')
          exe1 = os.path.join(self.builddir, 'fooprog' + exe_suffix)
          exe2 = os.path.join(self.builddir, 'barprog' + exe_suffix)
          self.assertPathExists(genfile1)
          self.assertPathExists(genfile2)
          self.assertPathDoesNotExist(exe1)
          self.assertPathDoesNotExist(exe2)
          self.build(target=('fooprog' + exe_suffix))
          self.assertPathExists(exe1)
          self.build(target=('barprog' + exe_suffix))
          self.assertPathExists(exe2)
  
      def test_internal_include_order(self):
          testdir = os.path.join(self.common_test_dir, '135 include order')
          self.init(testdir)
          execmd = fxecmd = None
          for cmd in self.get_compdb():
              if 'someexe' in cmd['command']:
                  execmd = cmd['command']
                  continue
              if 'somefxe' in cmd['command']:
                  fxecmd = cmd['command']
                  continue
          if not execmd or not fxecmd:
              raise Exception('Could not find someexe and somfxe commands')
          # Check include order for 'someexe'
          incs = [a for a in shlex.split(execmd) if a.startswith("-I")]
          self.assertEqual(len(incs), 9)
          # target private dir
          self.assertPathEqual(incs[0], "-Isub4/sub4@@someexe@exe")
          # target build subdir
          self.assertPathEqual(incs[1], "-Isub4")
          # target source subdir
          self.assertPathBasenameEqual(incs[2], 'sub4')
          # include paths added via per-target c_args: ['-I'...]
          self.assertPathBasenameEqual(incs[3], 'sub3')
          # target include_directories: build dir
          self.assertPathEqual(incs[4], "-Isub2")
          # target include_directories: source dir
          self.assertPathBasenameEqual(incs[5], 'sub2')
          # target internal dependency include_directories: build dir
          self.assertPathEqual(incs[6], "-Isub1")
          # target internal dependency include_directories: source dir
          self.assertPathBasenameEqual(incs[7], 'sub1')
          # custom target include dir
          self.assertPathEqual(incs[8], '-Ictsub')
          # Check include order for 'somefxe'
          incs = [a for a in shlex.split(fxecmd) if a.startswith('-I')]
          self.assertEqual(len(incs), 9)
          # target private dir
          self.assertPathEqual(incs[0], '-Isomefxe@exe')
          # target build dir
          self.assertPathEqual(incs[1], '-I.')
          # target source dir
          self.assertPathBasenameEqual(incs[2], os.path.basename(testdir))
          # target internal dependency correct include_directories: build dir
          self.assertPathEqual(incs[3], "-Isub4")
          # target internal dependency correct include_directories: source dir
          self.assertPathBasenameEqual(incs[4], 'sub4')
          # target internal dependency dep include_directories: build dir
          self.assertPathEqual(incs[5], "-Isub1")
          # target internal dependency dep include_directories: source dir
          self.assertPathBasenameEqual(incs[6], 'sub1')
          # target internal dependency wrong include_directories: build dir
          self.assertPathEqual(incs[7], "-Isub2")
          # target internal dependency wrong include_directories: source dir
          self.assertPathBasenameEqual(incs[8], 'sub2')
  
      def test_compiler_detection(self):
          '''
          Test that automatic compiler detection and setting from the environment
          both work just fine. This is needed because while running project tests
          and other unit tests, we always read CC/CXX/etc from the environment.
          '''
          gnu = mesonbuild.compilers.GnuCompiler
          clang = mesonbuild.compilers.ClangCompiler
          intel = mesonbuild.compilers.IntelCompiler
          msvc = mesonbuild.compilers.VisualStudioCCompiler
          ar = mesonbuild.linkers.ArLinker
          lib = mesonbuild.linkers.VisualStudioLinker
          langs = [('c', 'CC'), ('cpp', 'CXX')]
          if not is_windows():
              langs += [('objc', 'OBJC'), ('objcpp', 'OBJCXX')]
          testdir = os.path.join(self.unit_test_dir, '5 compiler detection')
          env = get_fake_env(testdir, self.builddir, self.prefix)
          for lang, evar in langs:
              # Detect with evar and do sanity checks on that
              if evar in os.environ:
                  ecc = getattr(env, 'detect_{}_compiler'.format(lang))(False)
                  self.assertTrue(ecc.version)
                  elinker = env.detect_static_linker(ecc)
                  # Pop it so we don't use it for the next detection
                  evalue = os.environ.pop(evar)
                  # Very rough/strict heuristics. Would never work for actual
                  # compiler detection, but should be ok for the tests.
                  ebase = os.path.basename(evalue)
                  if ebase.startswith('g') or ebase.endswith(('-gcc', '-g++')):
                      self.assertIsInstance(ecc, gnu)
                      self.assertIsInstance(elinker, ar)
                  elif 'clang' in ebase:
                      self.assertIsInstance(ecc, clang)
                      self.assertIsInstance(elinker, ar)
                  elif ebase.startswith('ic'):
                      self.assertIsInstance(ecc, intel)
                      self.assertIsInstance(elinker, ar)
                  elif ebase.startswith('cl'):
                      self.assertIsInstance(ecc, msvc)
                      self.assertIsInstance(elinker, lib)
                  else:
                      raise AssertionError('Unknown compiler {!r}'.format(evalue))
                  # Check that we actually used the evalue correctly as the compiler
                  self.assertEqual(ecc.get_exelist(), shlex.split(evalue))
              # Do auto-detection of compiler based on platform, PATH, etc.
              cc = getattr(env, 'detect_{}_compiler'.format(lang))(False)
              self.assertTrue(cc.version)
              linker = env.detect_static_linker(cc)
              # Check compiler type
              if isinstance(cc, gnu):
                  self.assertIsInstance(linker, ar)
                  if is_osx():
                      self.assertEqual(cc.gcc_type, mesonbuild.compilers.GCC_OSX)
                  elif is_windows():
                      self.assertEqual(cc.gcc_type, mesonbuild.compilers.GCC_MINGW)
                  elif is_cygwin():
                      self.assertEqual(cc.gcc_type, mesonbuild.compilers.GCC_CYGWIN)
                  else:
                      self.assertEqual(cc.gcc_type, mesonbuild.compilers.GCC_STANDARD)
              if isinstance(cc, clang):
                  self.assertIsInstance(linker, ar)
                  if is_osx():
                      self.assertEqual(cc.clang_type, mesonbuild.compilers.CLANG_OSX)
                  elif is_windows():
                      # Not implemented yet
                      self.assertEqual(cc.clang_type, mesonbuild.compilers.CLANG_WIN)
                  else:
                      self.assertEqual(cc.clang_type, mesonbuild.compilers.CLANG_STANDARD)
              if isinstance(cc, intel):
                  self.assertIsInstance(linker, ar)
                  if is_osx():
                      self.assertEqual(cc.icc_type, mesonbuild.compilers.ICC_OSX)
                  elif is_windows():
                      self.assertEqual(cc.icc_type, mesonbuild.compilers.ICC_WIN)
                  else:
                      self.assertEqual(cc.icc_type, mesonbuild.compilers.ICC_STANDARD)
              if isinstance(cc, msvc):
                  self.assertTrue(is_windows())
                  self.assertIsInstance(linker, lib)
                  self.assertEqual(cc.id, 'msvc')
                  self.assertTrue(hasattr(cc, 'is_64'))
                  # If we're in the appveyor CI, we know what the compiler will be
                  if 'arch' in os.environ:
                      if os.environ['arch'] == 'x64':
                          self.assertTrue(cc.is_64)
                      else:
                          self.assertFalse(cc.is_64)
              # Set evar ourselves to a wrapper script that just calls the same
              # exelist + some argument. This is meant to test that setting
              # something like `ccache gcc -pipe` or `distcc ccache gcc` works.
              wrapper = os.path.join(testdir, 'compiler wrapper.py')
              wrappercc = python_command + [wrapper] + cc.get_exelist() + ['-DSOME_ARG']
              wrappercc_s = ''
              for w in wrappercc:
                  wrappercc_s += shlex.quote(w) + ' '
              os.environ[evar] = wrappercc_s
              wcc = getattr(env, 'detect_{}_compiler'.format(lang))(False)
              # Check static linker too
              wrapperlinker = python_command + [wrapper] + linker.get_exelist() + linker.get_always_args()
              wrapperlinker_s = ''
              for w in wrapperlinker:
                  wrapperlinker_s += shlex.quote(w) + ' '
              os.environ['AR'] = wrapperlinker_s
              wlinker = env.detect_static_linker(wcc)
              # Must be the same type since it's a wrapper around the same exelist
              self.assertIs(type(cc), type(wcc))
              self.assertIs(type(linker), type(wlinker))
              # Ensure that the exelist is correct
              self.assertEqual(wcc.get_exelist(), wrappercc)
              self.assertEqual(wlinker.get_exelist(), wrapperlinker)
              # Ensure that the version detection worked correctly
              self.assertEqual(cc.version, wcc.version)
              if hasattr(cc, 'is_64'):
                  self.assertEqual(cc.is_64, wcc.is_64)
  
      def test_always_prefer_c_compiler_for_asm(self):
          testdir = os.path.join(self.common_test_dir, '138 c cpp and asm')
          # Skip if building with MSVC
          env = get_fake_env(testdir, self.builddir, self.prefix)
          if env.detect_c_compiler(False).get_id() == 'msvc':
              raise unittest.SkipTest('MSVC can\'t compile assembly')
          self.init(testdir)
          commands = {'c-asm': {}, 'cpp-asm': {}, 'cpp-c-asm': {}, 'c-cpp-asm': {}}
          for cmd in self.get_compdb():
              # Get compiler
              split = shlex.split(cmd['command'])
              if split[0] == 'ccache':
                  compiler = split[1]
              else:
                  compiler = split[0]
              # Classify commands
              if 'Ic-asm' in cmd['command']:
                  if cmd['file'].endswith('.S'):
                      commands['c-asm']['asm'] = compiler
                  elif cmd['file'].endswith('.c'):
                      commands['c-asm']['c'] = compiler
                  else:
                      raise AssertionError('{!r} found in cpp-asm?'.format(cmd['command']))
              elif 'Icpp-asm' in cmd['command']:
                  if cmd['file'].endswith('.S'):
                      commands['cpp-asm']['asm'] = compiler
                  elif cmd['file'].endswith('.cpp'):
                      commands['cpp-asm']['cpp'] = compiler
                  else:
                      raise AssertionError('{!r} found in cpp-asm?'.format(cmd['command']))
              elif 'Ic-cpp-asm' in cmd['command']:
                  if cmd['file'].endswith('.S'):
                      commands['c-cpp-asm']['asm'] = compiler
                  elif cmd['file'].endswith('.c'):
                      commands['c-cpp-asm']['c'] = compiler
                  elif cmd['file'].endswith('.cpp'):
                      commands['c-cpp-asm']['cpp'] = compiler
                  else:
                      raise AssertionError('{!r} found in c-cpp-asm?'.format(cmd['command']))
              elif 'Icpp-c-asm' in cmd['command']:
                  if cmd['file'].endswith('.S'):
                      commands['cpp-c-asm']['asm'] = compiler
                  elif cmd['file'].endswith('.c'):
                      commands['cpp-c-asm']['c'] = compiler
                  elif cmd['file'].endswith('.cpp'):
                      commands['cpp-c-asm']['cpp'] = compiler
                  else:
                      raise AssertionError('{!r} found in cpp-c-asm?'.format(cmd['command']))
              else:
                  raise AssertionError('Unknown command {!r} found'.format(cmd['command']))
          # Check that .S files are always built with the C compiler
          self.assertEqual(commands['c-asm']['asm'], commands['c-asm']['c'])
          self.assertEqual(commands['c-asm']['asm'], commands['cpp-asm']['asm'])
          self.assertEqual(commands['cpp-asm']['asm'], commands['c-cpp-asm']['c'])
          self.assertEqual(commands['c-cpp-asm']['asm'], commands['c-cpp-asm']['c'])
          self.assertEqual(commands['cpp-c-asm']['asm'], commands['cpp-c-asm']['c'])
          self.assertNotEqual(commands['cpp-asm']['asm'], commands['cpp-asm']['cpp'])
          self.assertNotEqual(commands['c-cpp-asm']['c'], commands['c-cpp-asm']['cpp'])
          self.assertNotEqual(commands['cpp-c-asm']['c'], commands['cpp-c-asm']['cpp'])
          # Check that the c-asm target is always linked with the C linker
          build_ninja = os.path.join(self.builddir, 'build.ninja')
          with open(build_ninja, 'r', encoding='utf-8') as f:
              contents = f.read()
              m = re.search('build c-asm.*: c_LINKER', contents)
          self.assertIsNotNone(m, msg=contents)
  
      def test_preprocessor_checks_CPPFLAGS(self):
          '''
          Test that preprocessor compiler checks read CPPFLAGS but not CFLAGS
          '''
          testdir = os.path.join(self.common_test_dir, '137 get define')
          define = 'MESON_TEST_DEFINE_VALUE'
          # NOTE: this list can't have \n, ' or "
          # \n is never substituted by the GNU pre-processor via a -D define
          # ' and " confuse shlex.split() even when they are escaped
          # % and # confuse the MSVC preprocessor
          # !, ^, *, and < confuse lcc preprocessor
          value = 'spaces and fun@$&()-=_+{}[]:;>?,./~`'
          os.environ['CPPFLAGS'] = '-D{}="{}"'.format(define, value)
          os.environ['CFLAGS'] = '-DMESON_FAIL_VALUE=cflags-read'.format(define)
          self.init(testdir, ['-D{}={}'.format(define, value)])
  
      def test_custom_target_exe_data_deterministic(self):
          testdir = os.path.join(self.common_test_dir, '114 custom target capture')
          self.init(testdir)
          meson_exe_dat1 = glob(os.path.join(self.privatedir, 'meson_exe*.dat'))
          self.wipe()
          self.init(testdir)
          meson_exe_dat2 = glob(os.path.join(self.privatedir, 'meson_exe*.dat'))
          self.assertListEqual(meson_exe_dat1, meson_exe_dat2)
  
      def test_source_changes_cause_rebuild(self):
          '''
          Test that changes to sources and headers cause rebuilds, but not
          changes to unused files (as determined by the dependency file) in the
          input files list.
          '''
          testdir = os.path.join(self.common_test_dir, '20 header in file list')
          self.init(testdir)
          self.build()
          # Immediately rebuilding should not do anything
          self.assertBuildIsNoop()
          # Changing mtime of header.h should rebuild everything
          self.utime(os.path.join(testdir, 'header.h'))
          self.assertRebuiltTarget('prog')
  
      def test_custom_target_changes_cause_rebuild(self):
          '''
          Test that in a custom target, changes to the input files, the
          ExternalProgram, and any File objects on the command-line cause
          a rebuild.
          '''
          testdir = os.path.join(self.common_test_dir, '61 custom header generator')
          self.init(testdir)
          self.build()
          # Immediately rebuilding should not do anything
          self.assertBuildIsNoop()
          # Changing mtime of these should rebuild everything
          for f in ('input.def', 'makeheader.py', 'somefile.txt'):
              self.utime(os.path.join(testdir, f))
              self.assertRebuiltTarget('prog')
  
      def test_static_library_lto(self):
          '''
          Test that static libraries can be built with LTO and linked to
          executables. On Linux, this requires the use of gcc-ar.
          https://github.com/mesonbuild/meson/issues/1646
          '''
          testdir = os.path.join(self.common_test_dir, '5 linkstatic')
          self.init(testdir, extra_args='-Db_lto=true')
          self.build()
          self.run_tests()
  
      def test_dist_git(self):
          if not shutil.which('git'):
              raise unittest.SkipTest('Git not found')
  
          try:
              self.dist_impl(_git_init)
          except PermissionError:
              # When run under Windows CI, something (virus scanner?)
              # holds on to the git files so cleaning up the dir
              # fails sometimes.
              pass
  
      def test_dist_hg(self):
          if not shutil.which('hg'):
              raise unittest.SkipTest('Mercurial not found')
          if self.backend is not Backend.ninja:
              raise unittest.SkipTest('Dist is only supported with Ninja')
  
          def hg_init(project_dir):
              subprocess.check_call(['hg', 'init'], cwd=project_dir)
              with open(os.path.join(project_dir, '.hg', 'hgrc'), 'w') as f:
                  print('[ui]', file=f)
                  print('username=Author Person <teh_coderz@example.com>', file=f)
              subprocess.check_call(['hg', 'add', 'meson.build', 'distexe.c'], cwd=project_dir)
              subprocess.check_call(['hg', 'commit', '-m', 'I am a project'], cwd=project_dir)
  
          try:
              self.dist_impl(hg_init)
          except PermissionError:
              # When run under Windows CI, something (virus scanner?)
              # holds on to the hg files so cleaning up the dir
              # fails sometimes.
              pass
  
      def test_dist_git_script(self):
          if not shutil.which('git'):
              raise unittest.SkipTest('Git not found')
  
          try:
              with tempfile.TemporaryDirectory() as tmpdir:
                  project_dir = os.path.join(tmpdir, 'a')
                  shutil.copytree(os.path.join(self.unit_test_dir, '35 dist script'),
                                  project_dir)
                  _git_init(project_dir)
                  self.init(project_dir)
                  self.build('dist')
          except PermissionError:
              # When run under Windows CI, something (virus scanner?)
              # holds on to the git files so cleaning up the dir
              # fails sometimes.
              pass
  
      def dist_impl(self, vcs_init):
          # Create this on the fly because having rogue .git directories inside
          # the source tree leads to all kinds of trouble.
          with tempfile.TemporaryDirectory() as project_dir:
              with open(os.path.join(project_dir, 'meson.build'), 'w') as ofile:
                  ofile.write('''project('disttest', 'c', version : '1.4.3')
  e = executable('distexe', 'distexe.c')
  test('dist test', e)
  ''')
              with open(os.path.join(project_dir, 'distexe.c'), 'w') as ofile:
                  ofile.write('''#include<stdio.h>
  
  int main(int argc, char **argv) {
      printf("I am a distribution test.\\n");
      return 0;
  }
  ''')
              vcs_init(project_dir)
              self.init(project_dir)
              self.build('dist')
              distfile = os.path.join(self.distdir, 'disttest-1.4.3.tar.xz')
              checksumfile = distfile + '.sha256sum'
              self.assertPathExists(distfile)
              self.assertPathExists(checksumfile)
  
      def test_rpath_uses_ORIGIN(self):
          '''
          Test that built targets use $ORIGIN in rpath, which ensures that they
          are relocatable and ensures that builds are reproducible since the
          build directory won't get embedded into the built binaries.
          '''
          if is_windows() or is_cygwin():
              raise unittest.SkipTest('Windows PE/COFF binaries do not use RPATH')
          testdir = os.path.join(self.common_test_dir, '43 library chain')
          self.init(testdir)
          self.build()
          for each in ('prog', 'subdir/liblib1.so', ):
              rpath = get_rpath(os.path.join(self.builddir, each))
              self.assertTrue(rpath)
              if is_dragonflybsd():
                  # DragonflyBSD will prepend /usr/lib/gccVERSION to the rpath,
                  # so ignore that.
                  self.assertTrue(rpath.startswith('/usr/lib/gcc'))
                  rpaths = rpath.split(':')[1:]
              else:
                  rpaths = rpath.split(':')
              for path in rpaths:
                  self.assertTrue(path.startswith('$ORIGIN'), msg=(each, path))
          # These two don't link to anything else, so they do not need an rpath entry.
          for each in ('subdir/subdir2/liblib2.so', 'subdir/subdir3/liblib3.so'):
              rpath = get_rpath(os.path.join(self.builddir, each))
              if is_dragonflybsd():
                  # The rpath should be equal to /usr/lib/gccVERSION
                  self.assertTrue(rpath.startswith('/usr/lib/gcc'))
                  self.assertEqual(len(rpath.split(':')), 1)
              else:
                  self.assertTrue(rpath is None)
  
      def test_dash_d_dedup(self):
          testdir = os.path.join(self.unit_test_dir, '9 d dedup')
          self.init(testdir)
          cmd = self.get_compdb()[0]['command']
          self.assertTrue('-D FOO -D BAR' in cmd or
                          '"-D" "FOO" "-D" "BAR"' in cmd or
                          '/D FOO /D BAR' in cmd or
                          '"/D" "FOO" "/D" "BAR"' in cmd)
  
      def test_all_forbidden_targets_tested(self):
          '''
          Test that all forbidden targets are tested in the '155 reserved targets'
          test. Needs to be a unit test because it accesses Meson internals.
          '''
          testdir = os.path.join(self.common_test_dir, '155 reserved targets')
          targets = mesonbuild.coredata.forbidden_target_names
          # We don't actually define a target with this name
          targets.pop('build.ninja')
          # Remove this to avoid multiple entries with the same name
          # but different case.
          targets.pop('PHONY')
          for i in targets:
              self.assertPathExists(os.path.join(testdir, i))
  
      def detect_prebuild_env(self):
          env = get_fake_env('', self.builddir, self.prefix)
          cc = env.detect_c_compiler(False)
          stlinker = env.detect_static_linker(cc)
          if mesonbuild.mesonlib.is_windows():
              object_suffix = 'obj'
              shared_suffix = 'dll'
          elif mesonbuild.mesonlib.is_cygwin():
              object_suffix = 'o'
              shared_suffix = 'dll'
          elif mesonbuild.mesonlib.is_osx():
              object_suffix = 'o'
              shared_suffix = 'dylib'
          else:
              object_suffix = 'o'
              shared_suffix = 'so'
          return (cc, stlinker, object_suffix, shared_suffix)
  
      def pbcompile(self, compiler, source, objectfile, extra_args=[]):
          cmd = compiler.get_exelist()
          if compiler.id == 'msvc':
              cmd += ['/nologo', '/Fo' + objectfile, '/c', source] + extra_args
          else:
              cmd += ['-c', source, '-o', objectfile] + extra_args
          subprocess.check_call(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
  
      def test_prebuilt_object(self):
          (compiler, _, object_suffix, _) = self.detect_prebuild_env()
          tdir = os.path.join(self.unit_test_dir, '15 prebuilt object')
          source = os.path.join(tdir, 'source.c')
          objectfile = os.path.join(tdir, 'prebuilt.' + object_suffix)
          self.pbcompile(compiler, source, objectfile)
          try:
              self.init(tdir)
              self.build()
              self.run_tests()
          finally:
              os.unlink(objectfile)
  
      def build_static_lib(self, compiler, linker, source, objectfile, outfile, extra_args=None):
          if extra_args is None:
              extra_args = []
          if compiler.id == 'msvc':
              link_cmd = ['lib', '/NOLOGO', '/OUT:' + outfile, objectfile]
          else:
              link_cmd = ['ar', 'csr', outfile, objectfile]
          link_cmd = linker.get_exelist()
          link_cmd += linker.get_always_args()
          link_cmd += linker.get_std_link_args()
          link_cmd += linker.get_output_args(outfile)
          link_cmd += [objectfile]
          self.pbcompile(compiler, source, objectfile, extra_args=extra_args)
          try:
              subprocess.check_call(link_cmd)
          finally:
              os.unlink(objectfile)
  
      def test_prebuilt_static_lib(self):
          (cc, stlinker, object_suffix, _) = self.detect_prebuild_env()
          tdir = os.path.join(self.unit_test_dir, '16 prebuilt static')
          source = os.path.join(tdir, 'libdir/best.c')
          objectfile = os.path.join(tdir, 'libdir/best.' + object_suffix)
          stlibfile = os.path.join(tdir, 'libdir/libbest.a')
          self.build_static_lib(cc, stlinker, source, objectfile, stlibfile)
          # Run the test
          try:
              self.init(tdir)
              self.build()
              self.run_tests()
          finally:
              os.unlink(stlibfile)
  
      def build_shared_lib(self, compiler, source, objectfile, outfile, impfile, extra_args=None):
          if extra_args is None:
              extra_args = []
          if compiler.id == 'msvc':
              link_cmd = ['link', '/NOLOGO', '/DLL', '/DEBUG',
                          '/IMPLIB:' + impfile, '/OUT:' + outfile, objectfile]
          else:
              extra_args += ['-fPIC']
              link_cmd = compiler.get_exelist() + ['-shared', '-o', outfile, objectfile]
              if not mesonbuild.mesonlib.is_osx():
                  link_cmd += ['-Wl,-soname=' + os.path.basename(outfile)]
          self.pbcompile(compiler, source, objectfile, extra_args=extra_args)
          try:
              subprocess.check_call(link_cmd)
          finally:
              os.unlink(objectfile)
  
      def test_prebuilt_shared_lib(self):
          (cc, _, object_suffix, shared_suffix) = self.detect_prebuild_env()
          tdir = os.path.join(self.unit_test_dir, '17 prebuilt shared')
          source = os.path.join(tdir, 'alexandria.c')
          objectfile = os.path.join(tdir, 'alexandria.' + object_suffix)
          impfile = os.path.join(tdir, 'alexandria.lib')
          if cc.id == 'msvc':
              shlibfile = os.path.join(tdir, 'alexandria.' + shared_suffix)
          elif is_cygwin():
              shlibfile = os.path.join(tdir, 'cygalexandria.' + shared_suffix)
          else:
              shlibfile = os.path.join(tdir, 'libalexandria.' + shared_suffix)
          self.build_shared_lib(cc, source, objectfile, shlibfile, impfile)
          # Run the test
          try:
              self.init(tdir)
              self.build()
              self.run_tests()
          finally:
              os.unlink(shlibfile)
              if mesonbuild.mesonlib.is_windows():
                  # Clean up all the garbage MSVC writes in the
                  # source tree.
                  for fname in glob(os.path.join(tdir, 'alexandria.*')):
                      if os.path.splitext(fname)[1] not in ['.c', '.h']:
                          os.unlink(fname)
  
      @skipIfNoPkgconfig
      def test_pkgconfig_static(self):
          '''
          Test that the we prefer static libraries when `static: true` is
          passed to dependency() with pkg-config. Can't be an ordinary test
          because we need to build libs and try to find them from meson.build
  
          Also test that it's not a hard error to have unsatisfiable library deps
          since system libraries -lm will never be found statically.
          https://github.com/mesonbuild/meson/issues/2785
          '''
          (cc, stlinker, objext, shext) = self.detect_prebuild_env()
          testdir = os.path.join(self.unit_test_dir, '18 pkgconfig static')
          source = os.path.join(testdir, 'foo.c')
          objectfile = os.path.join(testdir, 'foo.' + objext)
          stlibfile = os.path.join(testdir, 'libfoo.a')
          impfile = os.path.join(testdir, 'foo.lib')
          if cc.id == 'msvc':
              shlibfile = os.path.join(testdir, 'foo.' + shext)
          elif is_cygwin():
              shlibfile = os.path.join(testdir, 'cygfoo.' + shext)
          else:
              shlibfile = os.path.join(testdir, 'libfoo.' + shext)
          # Build libs
          self.build_static_lib(cc, stlinker, source, objectfile, stlibfile, extra_args=['-DFOO_STATIC'])
          self.build_shared_lib(cc, source, objectfile, shlibfile, impfile)
          # Run test
          os.environ['PKG_CONFIG_LIBDIR'] = self.builddir
          try:
              self.init(testdir)
              self.build()
              self.run_tests()
          finally:
              os.unlink(stlibfile)
              os.unlink(shlibfile)
              if mesonbuild.mesonlib.is_windows():
                  # Clean up all the garbage MSVC writes in the
                  # source tree.
                  for fname in glob(os.path.join(testdir, 'foo.*')):
                      if os.path.splitext(fname)[1] not in ['.c', '.h', '.in']:
                          os.unlink(fname)
  
      @skipIfNoPkgconfig
      def test_pkgconfig_gen_escaping(self):
          testdir = os.path.join(self.common_test_dir, '48 pkgconfig-gen')
          prefix = '/usr/with spaces'
          libdir = 'lib'
          self.init(testdir, extra_args=['--prefix=' + prefix,
                                         '--libdir=' + libdir])
          # Find foo dependency
          os.environ['PKG_CONFIG_LIBDIR'] = self.privatedir
          env = get_fake_env(testdir, self.builddir, self.prefix)
          kwargs = {'required': True, 'silent': True}
          foo_dep = PkgConfigDependency('libfoo', env, kwargs)
          # Ensure link_args are properly quoted
          libdir = PurePath(prefix) / PurePath(libdir)
          link_args = ['-L' + libdir.as_posix(), '-lfoo']
          self.assertEqual(foo_dep.get_link_args(), link_args)
          # Ensure include args are properly quoted
          incdir = PurePath(prefix) / PurePath('include')
          cargs = ['-I' + incdir.as_posix()]
          self.assertEqual(foo_dep.get_compile_args(), cargs)
  
      def test_array_option_change(self):
          def get_opt():
              opts = self.introspect('--buildoptions')
              for x in opts:
                  if x.get('name') == 'list':
                      return x
              raise Exception(opts)
  
          expected = {
              'name': 'list',
              'description': 'list',
              'type': 'array',
              'value': ['foo', 'bar'],
          }
          tdir = os.path.join(self.unit_test_dir, '19 array option')
          self.init(tdir)
          original = get_opt()
          self.assertDictEqual(original, expected)
  
          expected['value'] = ['oink', 'boink']
          self.setconf('-Dlist=oink,boink')
          changed = get_opt()
          self.assertEqual(changed, expected)
  
      def test_array_option_bad_change(self):
          def get_opt():
              opts = self.introspect('--buildoptions')
              for x in opts:
                  if x.get('name') == 'list':
                      return x
              raise Exception(opts)
  
          expected = {
              'name': 'list',
              'description': 'list',
              'type': 'array',
              'value': ['foo', 'bar'],
          }
          tdir = os.path.join(self.unit_test_dir, '19 array option')
          self.init(tdir)
          original = get_opt()
          self.assertDictEqual(original, expected)
          with self.assertRaises(subprocess.CalledProcessError):
              self.setconf('-Dlist=bad')
          changed = get_opt()
          self.assertDictEqual(changed, expected)
  
      def test_array_option_empty_equivalents(self):
          """Array options treat -Dopt=[] and -Dopt= as equivalent."""
          def get_opt():
              opts = self.introspect('--buildoptions')
              for x in opts:
                  if x.get('name') == 'list':
                      return x
              raise Exception(opts)
  
          expected = {
              'name': 'list',
              'description': 'list',
              'type': 'array',
              'value': [],
          }
          tdir = os.path.join(self.unit_test_dir, '19 array option')
          self.init(tdir, extra_args='-Dlist=')
          original = get_opt()
          self.assertDictEqual(original, expected)
  
      def opt_has(self, name, value):
          res = self.introspect('--buildoptions')
          found = False
          for i in res:
              if i['name'] == name:
                  self.assertEqual(i['value'], value)
                  found = True
                  break
          self.assertTrue(found, "Array option not found in introspect data.")
  
      def test_free_stringarray_setting(self):
          testdir = os.path.join(self.common_test_dir, '44 options')
          self.init(testdir)
          self.opt_has('free_array_opt', [])
          self.setconf('-Dfree_array_opt=foo,bar', will_build=False)
          self.opt_has('free_array_opt', ['foo', 'bar'])
          self.setconf("-Dfree_array_opt=['a,b', 'c,d']", will_build=False)
          self.opt_has('free_array_opt', ['a,b', 'c,d'])
  
      def test_subproject_promotion(self):
          testdir = os.path.join(self.unit_test_dir, '12 promote')
          workdir = os.path.join(self.builddir, 'work')
          shutil.copytree(testdir, workdir)
          spdir = os.path.join(workdir, 'subprojects')
          s3dir = os.path.join(spdir, 's3')
          scommondir = os.path.join(spdir, 'scommon')
          self.assertFalse(os.path.isdir(s3dir))
          subprocess.check_call(self.wrap_command + ['promote', 's3'], cwd=workdir)
          self.assertTrue(os.path.isdir(s3dir))
          self.assertFalse(os.path.isdir(scommondir))
          self.assertNotEqual(subprocess.call(self.wrap_command + ['promote', 'scommon'],
                                              cwd=workdir,
                                              stdout=subprocess.DEVNULL), 0)
          self.assertNotEqual(subprocess.call(self.wrap_command + ['promote', 'invalid/path/to/scommon'],
                                              cwd=workdir,
                                              stderr=subprocess.DEVNULL), 0)
          self.assertFalse(os.path.isdir(scommondir))
          subprocess.check_call(self.wrap_command + ['promote', 'subprojects/s2/subprojects/scommon'], cwd=workdir)
          self.assertTrue(os.path.isdir(scommondir))
          promoted_wrap = os.path.join(spdir, 'athing.wrap')
          self.assertFalse(os.path.isfile(promoted_wrap))
          subprocess.check_call(self.wrap_command + ['promote', 'athing'], cwd=workdir)
          self.assertTrue(os.path.isfile(promoted_wrap))
          self.init(workdir)
          self.build()
  
      def test_subproject_promotion_wrap(self):
          testdir = os.path.join(self.unit_test_dir, '44 promote wrap')
          workdir = os.path.join(self.builddir, 'work')
          shutil.copytree(testdir, workdir)
          spdir = os.path.join(workdir, 'subprojects')
  
          ambiguous_wrap = os.path.join(spdir, 'ambiguous.wrap')
          self.assertNotEqual(subprocess.call(self.wrap_command + ['promote', 'ambiguous'],
                                              cwd=workdir,
                                              stdout=subprocess.DEVNULL), 0)
          self.assertFalse(os.path.isfile(ambiguous_wrap))
          subprocess.check_call(self.wrap_command + ['promote', 'subprojects/s2/subprojects/ambiguous.wrap'], cwd=workdir)
          self.assertTrue(os.path.isfile(ambiguous_wrap))
  
      def test_warning_location(self):
          tdir = os.path.join(self.unit_test_dir, '22 warning location')
          out = self.init(tdir)
          for expected in [
              r'meson.build:4: WARNING: Keyword argument "link_with" defined multiple times.',
              r'sub' + os.path.sep + r'meson.build:3: WARNING: Keyword argument "link_with" defined multiple times.',
              r'meson.build:6: WARNING: a warning of some sort',
              r'sub' + os.path.sep + r'meson.build:4: WARNING: subdir warning',
              r'meson.build:7: WARNING: Module unstable-simd has no backwards or forwards compatibility and might not exist in future releases.',
              r"meson.build:11: WARNING: The variable(s) 'MISSING' in the input file 'conf.in' are not present in the given configuration data.",
              r'meson.build:1: WARNING: Passed invalid keyword argument "invalid".',
          ]:
              self.assertRegex(out, re.escape(expected))
  
      def test_permitted_method_kwargs(self):
          tdir = os.path.join(self.unit_test_dir, '25 non-permitted kwargs')
          out = self.init(tdir)
          for expected in [
              r'WARNING: Passed invalid keyword argument "prefixxx".',
              r'WARNING: Passed invalid keyword argument "argsxx".',
              r'WARNING: Passed invalid keyword argument "invalidxx".',
          ]:
              self.assertRegex(out, re.escape(expected))
  
      def test_templates(self):
          ninja = detect_ninja()
          if ninja is None:
              raise unittest.SkipTest('This test currently requires ninja. Fix this once "meson build" works.')
          for lang in ('c', 'cpp'):
              for type in ('executable', 'library'):
                  with tempfile.TemporaryDirectory() as tmpdir:
                      self._run(self.meson_command + ['init', '--language', lang, '--type', type],
                                workdir=tmpdir)
                      self._run(self.setup_command + ['--backend=ninja', 'builddir'],
                                workdir=tmpdir)
                      self._run(ninja,
                                workdir=os.path.join(tmpdir, 'builddir'))
              with tempfile.TemporaryDirectory() as tmpdir:
                  with open(os.path.join(tmpdir, 'foo.' + lang), 'w') as f:
                      f.write('int main() {}')
                  self._run(self.meson_command + ['init', '-b'], workdir=tmpdir)
  
      # The test uses mocking and thus requires that
      # the current process is the one to run the Meson steps.
      # If we are using an external test executable (most commonly
      # in Debian autopkgtests) then the mocking won't work.
      @unittest.skipIf('MESON_EXE' in os.environ, 'MESON_EXE is defined, can not use mocking.')
      def test_cross_file_system_paths(self):
          if is_windows():
              raise unittest.SkipTest('system crossfile paths not defined for Windows (yet)')
  
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          cross_content = textwrap.dedent("""\
              [binaries]
              c = '/usr/bin/cc'
              ar = '/usr/bin/ar'
              strip = '/usr/bin/ar'
  
              [properties]
  
              [host_machine]
              system = 'linux'
              cpu_family = 'x86'
              cpu = 'i686'
              endian = 'little'
              """)
  
          with tempfile.TemporaryDirectory() as d:
              dir_ = os.path.join(d, 'meson', 'cross')
              os.makedirs(dir_)
              with tempfile.NamedTemporaryFile('w', dir=dir_, delete=False) as f:
                  f.write(cross_content)
              name = os.path.basename(f.name)
  
              with mock.patch.dict(os.environ, {'XDG_DATA_HOME': d}):
                  self.init(testdir, ['--cross-file=' + name], inprocess=True)
                  self.wipe()
  
              with mock.patch.dict(os.environ, {'XDG_DATA_DIRS': d}):
                  os.environ.pop('XDG_DATA_HOME', None)
                  self.init(testdir, ['--cross-file=' + name], inprocess=True)
                  self.wipe()
  
          with tempfile.TemporaryDirectory() as d:
              dir_ = os.path.join(d, '.local', 'share', 'meson', 'cross')
              os.makedirs(dir_)
              with tempfile.NamedTemporaryFile('w', dir=dir_, delete=False) as f:
                  f.write(cross_content)
              name = os.path.basename(f.name)
  
              with mock.patch('mesonbuild.coredata.os.path.expanduser', lambda x: x.replace('~', d)):
                  self.init(testdir, ['--cross-file=' + name], inprocess=True)
                  self.wipe()
  
      def test_compiler_run_command(self):
          '''
          The test checks that the compiler object can be passed to
          run_command().
          '''
          testdir = os.path.join(self.unit_test_dir, '24 compiler run_command')
          self.init(testdir)
  
      def test_identical_target_name_in_subproject_flat_layout(self):
          '''
          Test that identical targets in different subprojects do not collide
          if layout is flat.
          '''
          testdir = os.path.join(self.common_test_dir, '178 identical target name in subproject flat layout')
          self.init(testdir, extra_args=['--layout=flat'])
          self.build()
  
      def test_identical_target_name_in_subdir_flat_layout(self):
          '''
          Test that identical targets in different subdirs do not collide
          if layout is flat.
          '''
          testdir = os.path.join(self.common_test_dir, '187 same target name flat layout')
          self.init(testdir, extra_args=['--layout=flat'])
          self.build()
  
      def test_flock(self):
          exception_raised = False
          with tempfile.TemporaryDirectory() as tdir:
              os.mkdir(os.path.join(tdir, 'meson-private'))
              with BuildDirLock(tdir):
                  try:
                      with BuildDirLock(tdir):
                          pass
                  except MesonException:
                      exception_raised = True
          self.assertTrue(exception_raised, 'Double locking did not raise exception.')
  
      @unittest.skipIf(is_osx(), 'Test not applicable to OSX')
      def test_check_module_linking(self):
          """
          Test that link_with: a shared module issues a warning
          https://github.com/mesonbuild/meson/issues/2865
          (That an error is raised on OSX is exercised by test failing/78)
          """
          tdir = os.path.join(self.unit_test_dir, '30 shared_mod linking')
          out = self.init(tdir)
          msg = ('''WARNING: target links against shared modules. This is not
  recommended as it is not supported on some platforms''')
          self.assertIn(msg, out)
  
      def test_ndebug_if_release_disabled(self):
          testdir = os.path.join(self.unit_test_dir, '28 ndebug if-release')
          self.init(testdir, extra_args=['--buildtype=release', '-Db_ndebug=if-release'])
          self.build()
          exe = os.path.join(self.builddir, 'main')
          self.assertEqual(b'NDEBUG=1', subprocess.check_output(exe).strip())
  
      def test_ndebug_if_release_enabled(self):
          testdir = os.path.join(self.unit_test_dir, '28 ndebug if-release')
          self.init(testdir, extra_args=['--buildtype=debugoptimized', '-Db_ndebug=if-release'])
          self.build()
          exe = os.path.join(self.builddir, 'main')
          self.assertEqual(b'NDEBUG=0', subprocess.check_output(exe).strip())
  
      def test_guessed_linker_dependencies(self):
          '''
          Test that meson adds dependencies for libraries based on the final
          linker command line.
          '''
          # build library
          testdirbase = os.path.join(self.unit_test_dir, '29 guessed linker dependencies')
          testdirlib = os.path.join(testdirbase, 'lib')
          extra_args = None
          env = get_fake_env(testdirlib, self.builddir, self.prefix)
          if env.detect_c_compiler(False).get_id() != 'msvc':
              # static libraries are not linkable with -l with msvc because meson installs them
              # as .a files which unix_args_to_native will not know as it expects libraries to use
              # .lib as extension. For a DLL the import library is installed as .lib. Thus for msvc
              # this tests needs to use shared libraries to test the path resolving logic in the
              # dependency generation code path.
              extra_args = ['--default-library', 'static']
          self.init(testdirlib, extra_args=extra_args)
          self.build()
          self.install()
          libbuilddir = self.builddir
          installdir = self.installdir
          libdir = os.path.join(self.installdir, self.prefix.lstrip('/').lstrip('\\'), 'lib')
  
          # build user of library
          self.new_builddir()
          # replace is needed because meson mangles platform pathes passed via LDFLAGS
          os.environ["LDFLAGS"] = '-L{}'.format(libdir.replace('\\', '/'))
          self.init(os.path.join(testdirbase, 'exe'))
          del os.environ["LDFLAGS"]
          self.build()
          self.assertBuildIsNoop()
  
          # rebuild library
          exebuilddir = self.builddir
          self.installdir = installdir
          self.builddir = libbuilddir
          # Microsoft's compiler is quite smart about touching import libs on changes,
          # so ensure that there is actually a change in symbols.
          self.setconf('-Dmore_exports=true')
          self.build()
          self.install()
          # no ensure_backend_detects_changes needed because self.setconf did that already
  
          # assert user of library will be rebuild
          self.builddir = exebuilddir
          self.assertRebuiltTarget('app')
  
      def test_conflicting_d_dash_option(self):
          testdir = os.path.join(self.unit_test_dir, '37 mixed command line args')
          with self.assertRaises(subprocess.CalledProcessError) as e:
              self.init(testdir, extra_args=['-Dbindir=foo', '--bindir=bar'])
              # Just to ensure that we caught the correct error
              self.assertIn('passed as both', e.stderr)
  
      def _test_same_option_twice(self, arg, args):
          testdir = os.path.join(self.unit_test_dir, '37 mixed command line args')
          self.init(testdir, extra_args=args)
          opts = self.introspect('--buildoptions')
          for item in opts:
              if item['name'] == arg:
                  self.assertEqual(item['value'], 'bar')
                  return
          raise Exception('Missing {} value?'.format(arg))
  
      def test_same_dash_option_twice(self):
          self._test_same_option_twice('bindir', ['--bindir=foo', '--bindir=bar'])
  
      def test_same_d_option_twice(self):
          self._test_same_option_twice('bindir', ['-Dbindir=foo', '-Dbindir=bar'])
  
      def test_same_project_d_option_twice(self):
          self._test_same_option_twice('one', ['-Done=foo', '-Done=bar'])
  
      def _test_same_option_twice_configure(self, arg, args):
          testdir = os.path.join(self.unit_test_dir, '37 mixed command line args')
          self.init(testdir)
          self.setconf(args)
          opts = self.introspect('--buildoptions')
          for item in opts:
              if item['name'] == arg:
                  self.assertEqual(item['value'], 'bar')
                  return
          raise Exception('Missing {} value?'.format(arg))
  
      def test_same_dash_option_twice_configure(self):
          self._test_same_option_twice_configure(
              'bindir', ['--bindir=foo', '--bindir=bar'])
  
      def test_same_d_option_twice_configure(self):
          self._test_same_option_twice_configure(
              'bindir', ['-Dbindir=foo', '-Dbindir=bar'])
  
      def test_same_project_d_option_twice_configure(self):
          self._test_same_option_twice_configure(
              'one', ['-Done=foo', '-Done=bar'])
  
      def test_command_line(self):
          testdir = os.path.join(self.unit_test_dir, '34 command line')
  
          # Verify default values when passing no args
          self.init(testdir)
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['default_library'].value, 'static')
          self.assertEqual(obj.builtins['warning_level'].value, '1')
          self.assertEqual(obj.user_options['set_sub_opt'].value, True)
          self.assertEqual(obj.user_options['subp:subp_opt'].value, 'default3')
          self.wipe()
  
          # warning_level is special, it's --warnlevel instead of --warning-level
          # for historical reasons
          self.init(testdir, extra_args=['--warnlevel=2'])
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['warning_level'].value, '2')
          self.setconf('--warnlevel=3')
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['warning_level'].value, '3')
          self.wipe()
  
          # But when using -D syntax, it should be 'warning_level'
          self.init(testdir, extra_args=['-Dwarning_level=2'])
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['warning_level'].value, '2')
          self.setconf('-Dwarning_level=3')
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['warning_level'].value, '3')
          self.wipe()
  
          # Mixing --option and -Doption is forbidden
          with self.assertRaises(subprocess.CalledProcessError) as cm:
              self.init(testdir, extra_args=['--warnlevel=1', '-Dwarning_level=3'])
          self.assertNotEqual(0, cm.exception.returncode)
          self.assertIn('as both', cm.exception.output)
          self.init(testdir)
          with self.assertRaises(subprocess.CalledProcessError) as cm:
              self.setconf(['--warnlevel=1', '-Dwarning_level=3'])
          self.assertNotEqual(0, cm.exception.returncode)
          self.assertIn('as both', cm.exception.output)
          self.wipe()
  
          # --default-library should override default value from project()
          self.init(testdir, extra_args=['--default-library=both'])
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['default_library'].value, 'both')
          self.setconf('--default-library=shared')
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.builtins['default_library'].value, 'shared')
          if self.backend is Backend.ninja:
              # reconfigure target works only with ninja backend
              self.build('reconfigure')
              obj = mesonbuild.coredata.load(self.builddir)
              self.assertEqual(obj.builtins['default_library'].value, 'shared')
          self.wipe()
  
          # Should warn on unknown options
          out = self.init(testdir, extra_args=['-Dbad=1', '-Dfoo=2', '-Dwrong_link_args=foo'])
          self.assertIn('Unknown options: "bad, foo, wrong_link_args"', out)
          self.wipe()
  
          # Should fail on malformed option
          with self.assertRaises(subprocess.CalledProcessError) as cm:
              self.init(testdir, extra_args=['-Dfoo'])
          self.assertNotEqual(0, cm.exception.returncode)
          self.assertIn('Option \'foo\' must have a value separated by equals sign.', cm.exception.output)
          self.init(testdir)
          with self.assertRaises(subprocess.CalledProcessError) as cm:
              self.setconf('-Dfoo')
          self.assertNotEqual(0, cm.exception.returncode)
          self.assertIn('Option \'foo\' must have a value separated by equals sign.', cm.exception.output)
          self.wipe()
  
          # It is not an error to set wrong option for unknown subprojects or
          # language because we don't have control on which one will be selected.
          self.init(testdir, extra_args=['-Dc_wrong=1', '-Dwrong:bad=1', '-Db_wrong=1'])
          self.wipe()
  
          # Test we can set subproject option
          self.init(testdir, extra_args=['-Dsubp:subp_opt=foo'])
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.user_options['subp:subp_opt'].value, 'foo')
          self.wipe()
  
          # c_args value should be parsed with shlex
          self.init(testdir, extra_args=['-Dc_args=foo bar "one two"'])
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.compiler_options['c_args'].value, ['foo', 'bar', 'one two'])
          self.setconf('-Dc_args="foo bar" one two')
          obj = mesonbuild.coredata.load(self.builddir)
          self.assertEqual(obj.compiler_options['c_args'].value, ['foo bar', 'one', 'two'])
          self.wipe()
  
          # Setting a 2nd time the same option should override the first value
          try:
              self.init(testdir, extra_args=['--bindir=foo', '--bindir=bar',
                                             '-Dbuildtype=plain', '-Dbuildtype=release',
                                             '-Db_sanitize=address', '-Db_sanitize=thread',
                                             '-Dc_args=foo', '-Dc_args=bar'])
              obj = mesonbuild.coredata.load(self.builddir)
              self.assertEqual(obj.builtins['bindir'].value, 'bar')
              self.assertEqual(obj.builtins['buildtype'].value, 'release')
              self.assertEqual(obj.base_options['b_sanitize'].value, 'thread')
              self.assertEqual(obj.compiler_options['c_args'].value, ['bar'])
              self.setconf(['--bindir=bar', '--bindir=foo',
                            '-Dbuildtype=release', '-Dbuildtype=plain',
                            '-Db_sanitize=thread', '-Db_sanitize=address',
                            '-Dc_args=bar', '-Dc_args=foo'])
              obj = mesonbuild.coredata.load(self.builddir)
              self.assertEqual(obj.builtins['bindir'].value, 'foo')
              self.assertEqual(obj.builtins['buildtype'].value, 'plain')
              self.assertEqual(obj.base_options['b_sanitize'].value, 'address')
              self.assertEqual(obj.compiler_options['c_args'].value, ['foo'])
              self.wipe()
          except KeyError:
              # Ignore KeyError, it happens on CI for compilers that does not
              # support b_sanitize. We have to test with a base option because
              # they used to fail this test with Meson 0.46 an earlier versions.
              pass
  
      def test_feature_check_usage_subprojects(self):
          testdir = os.path.join(self.unit_test_dir, '41 featurenew subprojects')
          out = self.init(testdir)
          # Parent project warns correctly
          self.assertRegex(out, "WARNING: Project targetting '>=0.45'.*'0.47.0': dict")
          # Subproject warns correctly
          self.assertRegex(out, "|WARNING: Project targetting '>=0.40'.*'0.44.0': disabler")
          # Subproject has a new-enough meson_version, no warning
          self.assertNotRegex(out, "WARNING: Project targetting.*Python")
          # Ensure a summary is printed in the subproject and the outer project
          self.assertRegex(out, "|WARNING: Project specifies a minimum meson_version '>=0.40'")
          self.assertRegex(out, "| * 0.44.0: {'disabler'}")
          self.assertRegex(out, "WARNING: Project specifies a minimum meson_version '>=0.45'")
          self.assertRegex(out, " * 0.47.0: {'dict'}")
  
      def test_configure_file_warnings(self):
          testdir = os.path.join(self.common_test_dir, "14 configure file")
          out = self.init(testdir)
          self.assertRegex(out, "WARNING:.*'empty'.*config.h.in.*not present.*")
          self.assertRegex(out, "WARNING:.*'FOO_BAR'.*nosubst-nocopy2.txt.in.*not present.*")
          self.assertRegex(out, "WARNING:.*'empty'.*config.h.in.*not present.*")
          self.assertRegex(out, "WARNING:.*empty configuration_data.*test.py.in")
          # Warnings for configuration files that are overwritten.
          self.assertRegex(out, "WARNING:.*\"double_output.txt\".*overwrites")
          self.assertRegex(out, "WARNING:.*\"subdir.double_output2.txt\".*overwrites")
          self.assertNotRegex(out, "WARNING:.*no_write_conflict.txt.*overwrites")
          # No warnings about empty configuration data objects passed to files with substitutions
          self.assertNotRegex(out, "WARNING:.*empty configuration_data.*nosubst-nocopy1.txt.in")
          self.assertNotRegex(out, "WARNING:.*empty configuration_data.*nosubst-nocopy2.txt.in")
          with open(os.path.join(self.builddir, 'nosubst-nocopy1.txt'), 'rb') as f:
              self.assertEqual(f.read().strip(), b'/* #undef FOO_BAR */')
          with open(os.path.join(self.builddir, 'nosubst-nocopy2.txt'), 'rb') as f:
              self.assertEqual(f.read().strip(), b'')
          self.assertRegex(out, r"DEPRECATION:.*\['array'\] is invalid.*dict")
  
      def test_dirs(self):
          with tempfile.TemporaryDirectory() as containing:
              with tempfile.TemporaryDirectory(dir=containing) as srcdir:
                  mfile = os.path.join(srcdir, 'meson.build')
                  of = open(mfile, 'w')
                  of.write("project('foobar', 'c')\n")
                  of.close()
                  pc = subprocess.run(self.setup_command,
                                      cwd=srcdir,
                                      stdout=subprocess.PIPE,
                                      stderr=subprocess.DEVNULL)
                  self.assertIn(b'Must specify at least one directory name', pc.stdout)
                  with tempfile.TemporaryDirectory(dir=srcdir) as builddir:
                      subprocess.run(self.setup_command,
                                     check=True,
                                     cwd=builddir,
                                     stdout=subprocess.DEVNULL,
                                     stderr=subprocess.DEVNULL)
  
      def get_opts_as_dict(self):
          result = {}
          for i in self.introspect('--buildoptions'):
              result[i['name']] = i['value']
          return result
  
      def test_buildtype_setting(self):
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          self.init(testdir)
          opts = self.get_opts_as_dict()
          self.assertEqual(opts['buildtype'], 'debug')
          self.assertEqual(opts['debug'], True)
          self.setconf('-Ddebug=false')
          opts = self.get_opts_as_dict()
          self.assertEqual(opts['debug'], False)
          self.assertEqual(opts['buildtype'], 'plain')
          self.assertEqual(opts['optimization'], '0')
  
          # Setting optimizations to 3 should cause buildtype
          # to go to release mode.
          self.setconf('-Doptimization=3')
          opts = self.get_opts_as_dict()
          self.assertEqual(opts['buildtype'], 'release')
          self.assertEqual(opts['debug'], False)
          self.assertEqual(opts['optimization'], '3')
  
          # Going to debug build type should reset debugging
          # and optimization
          self.setconf('-Dbuildtype=debug')
          opts = self.get_opts_as_dict()
          self.assertEqual(opts['buildtype'], 'debug')
          self.assertEqual(opts['debug'], True)
          self.assertEqual(opts['optimization'], '0')
  
  
  class FailureTests(BasePlatformTests):
      '''
      Tests that test failure conditions. Build files here should be dynamically
      generated and static tests should go into `test cases/failing*`.
      This is useful because there can be many ways in which a particular
      function can fail, and creating failing tests for all of them is tedious
      and slows down testing.
      '''
      dnf = "[Dd]ependency.*not found"
      nopkg = '[Pp]kg-config not found'
  
      def setUp(self):
          super().setUp()
          self.srcdir = os.path.realpath(tempfile.mkdtemp())
          self.mbuild = os.path.join(self.srcdir, 'meson.build')
  
      def tearDown(self):
          super().tearDown()
          windows_proof_rmtree(self.srcdir)
  
      def assertMesonRaises(self, contents, match, extra_args=None, langs=None):
          '''
          Assert that running meson configure on the specified @contents raises
          a error message matching regex @match.
          '''
          if langs is None:
              langs = []
          with open(self.mbuild, 'w') as f:
              f.write("project('failure test', 'c', 'cpp')\n")
              for lang in langs:
                  f.write("add_languages('{}', required : false)\n".format(lang))
              f.write(contents)
          # Force tracebacks so we can detect them properly
          os.environ['MESON_FORCE_BACKTRACE'] = '1'
          with self.assertRaisesRegex(MesonException, match, msg=contents):
              # Must run in-process or we'll get a generic CalledProcessError
              self.init(self.srcdir, extra_args=extra_args, inprocess=True)
  
      def obtainMesonOutput(self, contents, match, extra_args, langs, meson_version):
          if langs is None:
              langs = []
          with open(self.mbuild, 'w') as f:
              core_version = '.'.join([str(component) for component in grab_leading_numbers(mesonbuild.coredata.version)])
              meson_version = meson_version or core_version
              f.write("project('output test', 'c', 'cpp', meson_version: '{}')\n".format(meson_version))
              for lang in langs:
                  f.write("add_languages('{}', required : false)\n".format(lang))
              f.write(contents)
          # Run in-process for speed and consistency with assertMesonRaises
          return self.init(self.srcdir, extra_args=extra_args, inprocess=True)
  
      def assertMesonOutputs(self, contents, match, extra_args=None, langs=None, meson_version=None):
          '''
          Assert that running meson configure on the specified @contents outputs
          something that matches regex @match.
          '''
          out = self.obtainMesonOutput(contents, match, extra_args, langs, meson_version)
          self.assertRegex(out, match)
  
      def assertMesonDoesNotOutput(self, contents, match, extra_args=None, langs=None, meson_version=None):
          '''
          Assert that running meson configure on the specified @contents does not output
          something that matches regex @match.
          '''
          out = self.obtainMesonOutput(contents, match, extra_args, langs, meson_version)
          self.assertNotRegex(out, match)
  
      @skipIfNoPkgconfig
      def test_dependency(self):
          if subprocess.call(['pkg-config', '--exists', 'zlib']) != 0:
              raise unittest.SkipTest('zlib not found with pkg-config')
          a = (("dependency('zlib', method : 'fail')", "'fail' is invalid"),
               ("dependency('zlib', static : '1')", "[Ss]tatic.*boolean"),
               ("dependency('zlib', version : 1)", "[Vv]ersion.*string or list"),
               ("dependency('zlib', required : 1)", "[Rr]equired.*boolean"),
               ("dependency('zlib', method : 1)", "[Mm]ethod.*string"),
               ("dependency('zlibfail')", self.dnf),)
          for contents, match in a:
              self.assertMesonRaises(contents, match)
  
      def test_apple_frameworks_dependency(self):
          if not is_osx():
              raise unittest.SkipTest('only run on macOS')
          self.assertMesonRaises("dependency('appleframeworks')",
                                 "requires at least one module")
  
      def test_sdl2_notfound_dependency(self):
          # Want to test failure, so skip if available
          if shutil.which('sdl2-config'):
              raise unittest.SkipTest('sdl2-config found')
          self.assertMesonRaises("dependency('sdl2', method : 'sdlconfig')", self.dnf)
          if shutil.which('pkg-config'):
              errmsg = self.dnf
          else:
              errmsg = self.nopkg
          self.assertMesonRaises("dependency('sdl2', method : 'pkg-config')", errmsg)
  
      def test_gnustep_notfound_dependency(self):
          # Want to test failure, so skip if available
          if shutil.which('gnustep-config'):
              raise unittest.SkipTest('gnustep-config found')
          self.assertMesonRaises("dependency('gnustep')",
                                 "(requires a Objc compiler|{})".format(self.dnf),
                                 langs = ['objc'])
  
      def test_wx_notfound_dependency(self):
          # Want to test failure, so skip if available
          if shutil.which('wx-config-3.0') or shutil.which('wx-config'):
              raise unittest.SkipTest('wx-config or wx-config-3.0 found')
          self.assertMesonRaises("dependency('wxwidgets')", self.dnf)
          self.assertMesonOutputs("dependency('wxwidgets', required : false)",
                                  "Dependency .*WxWidgets.* found: .*NO.*")
  
      def test_wx_dependency(self):
          if not shutil.which('wx-config-3.0') and not shutil.which('wx-config'):
              raise unittest.SkipTest('Neither wx-config nor wx-config-3.0 found')
          self.assertMesonRaises("dependency('wxwidgets', modules : 1)",
                                 "module argument is not a string")
  
      def test_llvm_dependency(self):
          self.assertMesonRaises("dependency('llvm', modules : 'fail')",
                                 "(required.*fail|{})".format(self.dnf))
  
      def test_boost_notfound_dependency(self):
          # Can be run even if Boost is found or not
          self.assertMesonRaises("dependency('boost', modules : 1)",
                                 "module.*not a string")
          self.assertMesonRaises("dependency('boost', modules : 'fail')",
                                 "(fail.*not found|{})".format(self.dnf))
  
      def test_boost_BOOST_ROOT_dependency(self):
          # Test BOOST_ROOT; can be run even if Boost is found or not
          os.environ['BOOST_ROOT'] = 'relative/path'
          self.assertMesonRaises("dependency('boost')",
                                 "(BOOST_ROOT.*absolute|{})".format(self.dnf))
  
      def test_dependency_invalid_method(self):
          code = '''zlib_dep = dependency('zlib', required : false)
          zlib_dep.get_configtool_variable('foo')
          '''
          self.assertMesonRaises(code, "'zlib' is not a config-tool dependency")
          code = '''zlib_dep = dependency('zlib', required : false)
          dep = declare_dependency(dependencies : zlib_dep)
          dep.get_pkgconfig_variable('foo')
          '''
          self.assertMesonRaises(code, "Method.*pkgconfig.*is invalid.*internal")
          code = '''zlib_dep = dependency('zlib', required : false)
          dep = declare_dependency(dependencies : zlib_dep)
          dep.get_configtool_variable('foo')
          '''
          self.assertMesonRaises(code, "Method.*configtool.*is invalid.*internal")
  
      def test_objc_cpp_detection(self):
          '''
          Test that when we can't detect objc or objcpp, we fail gracefully.
          '''
          env = get_fake_env('', self.builddir, self.prefix)
          try:
              env.detect_objc_compiler(False)
              env.detect_objcpp_compiler(False)
          except EnvironmentException:
              code = "add_languages('objc')\nadd_languages('objcpp')"
              self.assertMesonRaises(code, "Unknown compiler")
              return
          raise unittest.SkipTest("objc and objcpp found, can't test detection failure")
  
      def test_subproject_variables(self):
          '''
          Test that:
          1. The correct message is outputted when a not-required dep is not
             found and the fallback subproject is also not found.
          2. A not-found not-required dep with a fallback subproject outputs the
             correct message when the fallback subproject is found but the
             variable inside it is not.
          3. A fallback dependency is found from the subproject parsed in (2)
          4. A not-required fallback dependency is not found because the
             subproject failed to parse.
          '''
          tdir = os.path.join(self.unit_test_dir, '20 subproj dep variables')
          out = self.init(tdir, inprocess=True)
          self.assertRegex(out, r"Couldn't use fallback subproject "
                           "in.*subprojects.*nosubproj.*for the dependency.*somedep")
          self.assertRegex(out, r'Dependency.*somenotfounddep.*from subproject.*'
                           'subprojects.*somesubproj.*found:.*NO')
          self.assertRegex(out, r'Dependency.*zlibproxy.*from subproject.*'
                           'subprojects.*somesubproj.*found:.*YES.*(cached)')
          self.assertRegex(out, r'Couldn\'t use fallback subproject in '
                           '.*subprojects.*failingsubproj.*for the dependency.*somedep')
  
      def test_exception_exit_status(self):
          '''
          Test exit status on python exception
          '''
          tdir = os.path.join(self.unit_test_dir, '21 exit status')
          os.environ['MESON_UNIT_TEST'] = '1'
          with self.assertRaises(subprocess.CalledProcessError) as cm:
              self.init(tdir, inprocess=False)
          self.assertEqual(cm.exception.returncode, 2)
          self.wipe()
  
      def test_dict_requires_key_value_pairs(self):
          self.assertMesonRaises("dict = {3, 'foo': 'bar'}",
                                 'Only key:value pairs are valid in dict construction.')
          self.assertMesonRaises("{'foo': 'bar', 3}",
                                 'Only key:value pairs are valid in dict construction.')
  
      def test_dict_forbids_duplicate_keys(self):
          self.assertMesonRaises("dict = {'a': 41, 'a': 42}",
                                 'Duplicate dictionary key: a.*')
  
      def test_dict_forbids_integer_key(self):
          self.assertMesonRaises("dict = {3: 'foo'}",
                                 'Key must be a string.*')
  
      def test_using_too_recent_feature(self):
          # Here we use a dict, which was introduced in 0.47.0
          self.assertMesonOutputs("dict = {}",
                                  ".*WARNING.*Project targetting.*but.*",
                                  meson_version='>= 0.46.0')
  
      def test_using_recent_feature(self):
          # Same as above, except the meson version is now appropriate
          self.assertMesonDoesNotOutput("dict = {}",
                                        ".*WARNING.*Project targetting.*but.*",
                                        meson_version='>= 0.47.0')
  
      def test_using_too_recent_feature_dependency(self):
          self.assertMesonOutputs("dependency('pcap', required: false)",
                                  ".*WARNING.*Project targetting.*but.*",
                                  meson_version='>= 0.41.0')
  
      def test_vcs_tag_featurenew_build_always_stale(self):
          'https://github.com/mesonbuild/meson/issues/3904'
          vcs_tag = '''version_data = configuration_data()
          version_data.set('PROJVER', '@VCS_TAG@')
          vf = configure_file(output : 'version.h.in', configuration: version_data)
          f = vcs_tag(input : vf, output : 'version.h')
          '''
          msg = '.*WARNING:.*feature.*build_always_stale.*custom_target.*'
          self.assertMesonDoesNotOutput(vcs_tag, msg, meson_version='>=0.43')
  
      def test_missing_subproject_not_required_and_required(self):
          self.assertMesonRaises("sub1 = subproject('not-found-subproject', required: false)\n" +
                                 "sub2 = subproject('not-found-subproject', required: true)",
                                 """.*Subproject "subprojects/not-found-subproject" required but not found.*""")
  
      def test_get_variable_on_not_found_project(self):
          self.assertMesonRaises("sub1 = subproject('not-found-subproject', required: false)\n" +
                                 "sub1.get_variable('naaa')",
                                 """Subproject "subprojects/not-found-subproject" disabled can't get_variable on it.""")
  
  
  class WindowsTests(BasePlatformTests):
      '''
      Tests that should run on Cygwin, MinGW, and MSVC
      '''
      def setUp(self):
          super().setUp()
          self.platform_test_dir = os.path.join(self.src_root, 'test cases/windows')
  
      @unittest.skipIf(is_cygwin(), 'Test only applicable to Windows')
      def test_find_program(self):
          '''
          Test that Windows-specific edge-cases in find_program are functioning
          correctly. Cannot be an ordinary test because it involves manipulating
          PATH to point to a directory with Python scripts.
          '''
          testdir = os.path.join(self.platform_test_dir, '8 find program')
          # Find `cmd` and `cmd.exe`
          prog1 = ExternalProgram('cmd')
          self.assertTrue(prog1.found(), msg='cmd not found')
          prog2 = ExternalProgram('cmd.exe')
          self.assertTrue(prog2.found(), msg='cmd.exe not found')
          self.assertPathEqual(prog1.get_path(), prog2.get_path())
          # Find cmd with an absolute path that's missing the extension
          cmd_path = prog2.get_path()[:-4]
          prog = ExternalProgram(cmd_path)
          self.assertTrue(prog.found(), msg='{!r} not found'.format(cmd_path))
          # Finding a script with no extension inside a directory works
          prog = ExternalProgram(os.path.join(testdir, 'test-script'))
          self.assertTrue(prog.found(), msg='test-script not found')
          # Finding a script with an extension inside a directory works
          prog = ExternalProgram(os.path.join(testdir, 'test-script-ext.py'))
          self.assertTrue(prog.found(), msg='test-script-ext.py not found')
          # Finding a script in PATH w/o extension works and adds the interpreter
          os.environ['PATH'] += os.pathsep + testdir
          prog = ExternalProgram('test-script-ext')
          self.assertTrue(prog.found(), msg='test-script-ext not found in PATH')
          self.assertPathEqual(prog.get_command()[0], python_command[0])
          self.assertPathBasenameEqual(prog.get_path(), 'test-script-ext.py')
          # Finding a script in PATH with extension works and adds the interpreter
          prog = ExternalProgram('test-script-ext.py')
          self.assertTrue(prog.found(), msg='test-script-ext.py not found in PATH')
          self.assertPathEqual(prog.get_command()[0], python_command[0])
          self.assertPathBasenameEqual(prog.get_path(), 'test-script-ext.py')
  
      def test_ignore_libs(self):
          '''
          Test that find_library on libs that are to be ignored returns an empty
          array of arguments. Must be a unit test because we cannot inspect
          ExternalLibraryHolder from build files.
          '''
          testdir = os.path.join(self.platform_test_dir, '1 basic')
          env = get_fake_env(testdir, self.builddir, self.prefix)
          cc = env.detect_c_compiler(False)
          if cc.id != 'msvc':
              raise unittest.SkipTest('Not using MSVC')
          # To force people to update this test, and also test
          self.assertEqual(set(cc.ignore_libs), {'c', 'm', 'pthread', 'dl', 'rt'})
          for l in cc.ignore_libs:
              self.assertEqual(cc.find_library(l, env, []), [])
  
      def test_rc_depends_files(self):
          testdir = os.path.join(self.platform_test_dir, '5 resources')
  
          # resource compiler depfile generation is not yet implemented for msvc
          env = get_fake_env(testdir, self.builddir, self.prefix)
          depfile_works = env.detect_c_compiler(False).get_id() != 'msvc'
  
          self.init(testdir)
          self.build()
          # Immediately rebuilding should not do anything
          self.assertBuildIsNoop()
          # Test compile_resources(depend_file:)
          # Changing mtime of sample.ico should rebuild prog
          self.utime(os.path.join(testdir, 'res', 'sample.ico'))
          self.assertRebuiltTarget('prog')
          # Test depfile generation by compile_resources
          # Changing mtime of resource.h should rebuild myres.rc and then prog
          if depfile_works:
              self.utime(os.path.join(testdir, 'inc', 'resource', 'resource.h'))
              self.assertRebuiltTarget('prog')
          self.wipe()
  
          if depfile_works:
              testdir = os.path.join(self.platform_test_dir, '12 resources with custom targets')
              self.init(testdir)
              self.build()
              # Immediately rebuilding should not do anything
              self.assertBuildIsNoop()
              # Changing mtime of resource.h should rebuild myres_1.rc and then prog_1
              self.utime(os.path.join(testdir, 'res', 'resource.h'))
              self.assertRebuiltTarget('prog_1')
  
  class DarwinTests(BasePlatformTests):
      '''
      Tests that should run on macOS
      '''
      def setUp(self):
          super().setUp()
          self.platform_test_dir = os.path.join(self.src_root, 'test cases/osx')
  
      def test_apple_bitcode(self):
          '''
          Test that -fembed-bitcode is correctly added while compiling and
          -bitcode_bundle is added while linking when b_bitcode is true and not
          when it is false.  This can't be an ordinary test case because we need
          to inspect the compiler database.
          '''
          testdir = os.path.join(self.common_test_dir, '4 shared')
          # Try with bitcode enabled
          out = self.init(testdir, extra_args='-Db_bitcode=true')
          # Warning was printed
          self.assertRegex(out, 'WARNING:.*b_bitcode')
          # Compiler options were added
          compdb = self.get_compdb()
          self.assertIn('-fembed-bitcode', compdb[0]['command'])
          build_ninja = os.path.join(self.builddir, 'build.ninja')
          # Linker options were added
          with open(build_ninja, 'r', encoding='utf-8') as f:
              contents = f.read()
              m = re.search('LINK_ARGS =.*-bitcode_bundle', contents)
          self.assertIsNotNone(m, msg=contents)
          # Try with bitcode disabled
          self.setconf('-Db_bitcode=false')
          # Regenerate build
          self.build()
          compdb = self.get_compdb()
          self.assertNotIn('-fembed-bitcode', compdb[0]['command'])
          build_ninja = os.path.join(self.builddir, 'build.ninja')
          with open(build_ninja, 'r', encoding='utf-8') as f:
              contents = f.read()
              m = re.search('LINK_ARGS =.*-bitcode_bundle', contents)
          self.assertIsNone(m, msg=contents)
  
      def test_apple_bitcode_modules(self):
          '''
          Same as above, just for shared_module()
          '''
          testdir = os.path.join(self.common_test_dir, '153 shared module resolving symbol in executable')
          # Ensure that it builds even with bitcode enabled
          self.init(testdir, extra_args='-Db_bitcode=true')
          self.build()
          self.run_tests()
  
      def _get_darwin_versions(self, fname):
          fname = os.path.join(self.builddir, fname)
          out = subprocess.check_output(['otool', '-L', fname], universal_newlines=True)
          m = re.match(r'.*version (.*), current version (.*)\)', out.split('\n')[1])
          self.assertIsNotNone(m, msg=out)
          return m.groups()
  
      def test_library_versioning(self):
          '''
          Ensure that compatibility_version and current_version are set correctly
          '''
          testdir = os.path.join(self.platform_test_dir, '2 library versions')
          self.init(testdir)
          self.build()
          targets = {}
          for t in self.introspect('--targets'):
              targets[t['name']] = t['filename']
          self.assertEqual(self._get_darwin_versions(targets['some']), ('7.0.0', '7.0.0'))
          self.assertEqual(self._get_darwin_versions(targets['noversion']), ('0.0.0', '0.0.0'))
          self.assertEqual(self._get_darwin_versions(targets['onlyversion']), ('1.0.0', '1.0.0'))
          self.assertEqual(self._get_darwin_versions(targets['onlysoversion']), ('5.0.0', '5.0.0'))
          self.assertEqual(self._get_darwin_versions(targets['intver']), ('2.0.0', '2.0.0'))
          self.assertEqual(self._get_darwin_versions(targets['stringver']), ('2.3.0', '2.3.0'))
          self.assertEqual(self._get_darwin_versions(targets['stringlistver']), ('2.4.0', '2.4.0'))
          self.assertEqual(self._get_darwin_versions(targets['intstringver']), ('1111.0.0', '2.5.0'))
          self.assertEqual(self._get_darwin_versions(targets['stringlistvers']), ('2.6.0', '2.6.1'))
  
  
  class LinuxlikeTests(BasePlatformTests):
      '''
      Tests that should run on Linux, macOS, and *BSD
      '''
      def test_basic_soname(self):
          '''
          Test that the soname is set correctly for shared libraries. This can't
          be an ordinary test case because we need to run `readelf` and actually
          check the soname.
          https://github.com/mesonbuild/meson/issues/785
          '''
          testdir = os.path.join(self.common_test_dir, '4 shared')
          self.init(testdir)
          self.build()
          lib1 = os.path.join(self.builddir, 'libmylib.so')
          soname = get_soname(lib1)
          self.assertEqual(soname, 'libmylib.so')
  
      def test_custom_soname(self):
          '''
          Test that the soname is set correctly for shared libraries when
          a custom prefix and/or suffix is used. This can't be an ordinary test
          case because we need to run `readelf` and actually check the soname.
          https://github.com/mesonbuild/meson/issues/785
          '''
          testdir = os.path.join(self.common_test_dir, '25 library versions')
          self.init(testdir)
          self.build()
          lib1 = os.path.join(self.builddir, 'prefixsomelib.suffix')
          soname = get_soname(lib1)
          self.assertEqual(soname, 'prefixsomelib.suffix')
  
      def test_pic(self):
          '''
          Test that -fPIC is correctly added to static libraries when b_staticpic
          is true and not when it is false. This can't be an ordinary test case
          because we need to inspect the compiler database.
          '''
          if is_cygwin() or is_osx():
              raise unittest.SkipTest('PIC not relevant')
  
          testdir = os.path.join(self.common_test_dir, '3 static')
          self.init(testdir)
          compdb = self.get_compdb()
          self.assertIn('-fPIC', compdb[0]['command'])
          self.setconf('-Db_staticpic=false')
          # Regenerate build
          self.build()
          compdb = self.get_compdb()
          self.assertNotIn('-fPIC', compdb[0]['command'])
  
      def test_pkgconfig_gen(self):
          '''
          Test that generated pkg-config files can be found and have the correct
          version and link args. This can't be an ordinary test case because we
          need to run pkg-config outside of a Meson build file.
          https://github.com/mesonbuild/meson/issues/889
          '''
          testdir = os.path.join(self.common_test_dir, '48 pkgconfig-gen')
          self.init(testdir)
          env = get_fake_env(testdir, self.builddir, self.prefix)
          kwargs = {'required': True, 'silent': True}
          os.environ['PKG_CONFIG_LIBDIR'] = self.privatedir
          foo_dep = PkgConfigDependency('libfoo', env, kwargs)
          self.assertTrue(foo_dep.found())
          self.assertEqual(foo_dep.get_version(), '1.0')
          self.assertIn('-lfoo', foo_dep.get_link_args())
          self.assertEqual(foo_dep.get_pkgconfig_variable('foo', {}), 'bar')
          self.assertPathEqual(foo_dep.get_pkgconfig_variable('datadir', {}), '/usr/data')
  
      def test_pkgconfig_gen_deps(self):
          '''
          Test that generated pkg-config files correctly handle dependencies
          '''
          testdir = os.path.join(self.common_test_dir, '48 pkgconfig-gen')
          self.init(testdir)
          privatedir1 = self.privatedir
  
          self.new_builddir()
          os.environ['PKG_CONFIG_LIBDIR'] = privatedir1
          testdir = os.path.join(self.common_test_dir, '48 pkgconfig-gen', 'dependencies')
          self.init(testdir)
          privatedir2 = self.privatedir
  
          os.environ['PKG_CONFIG_LIBDIR'] = os.pathsep.join([privatedir1, privatedir2])
          cmd = ['pkg-config', 'dependency-test']
  
          out = self._run(cmd + ['--print-requires']).strip().split('\n')
          self.assertEqual(sorted(out), sorted(['libexposed']))
  
          out = self._run(cmd + ['--print-requires-private']).strip().split('\n')
          self.assertEqual(sorted(out), sorted(['libfoo >= 1.0']))
  
          out = self._run(cmd + ['--cflags-only-other']).strip().split()
          self.assertEqual(sorted(out), sorted(['-pthread', '-DCUSTOM']))
  
          out = self._run(cmd + ['--libs-only-l', '--libs-only-other']).strip().split()
          self.assertEqual(sorted(out), sorted(['-pthread', '-lcustom',
                                                '-llibmain', '-llibexposed']))
  
          out = self._run(cmd + ['--libs-only-l', '--libs-only-other', '--static']).strip().split()
          self.assertEqual(sorted(out), sorted(['-pthread', '-lcustom',
                                                '-llibmain', '-llibexposed',
                                                '-llibinternal', '-lcustom2',
                                                '-lfoo']))
  
          cmd = ['pkg-config', 'requires-test']
          out = self._run(cmd + ['--print-requires']).strip().split('\n')
          self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo >= 1.0', 'libhello']))
  
          cmd = ['pkg-config', 'requires-private-test']
          out = self._run(cmd + ['--print-requires-private']).strip().split('\n')
          self.assertEqual(sorted(out), sorted(['libexposed', 'libfoo >= 1.0', 'libhello']))
  
      def test_pkg_unfound(self):
          testdir = os.path.join(self.unit_test_dir, '23 unfound pkgconfig')
          self.init(testdir)
          with open(os.path.join(self.privatedir, 'somename.pc')) as f:
              pcfile = f.read()
          self.assertFalse('blub_blob_blib' in pcfile)
  
      def test_vala_c_warnings(self):
          '''
          Test that no warnings are emitted for C code generated by Vala. This
          can't be an ordinary test case because we need to inspect the compiler
          database.
          https://github.com/mesonbuild/meson/issues/864
          '''
          if not shutil.which('valac'):
              raise unittest.SkipTest('valac not installed.')
          testdir = os.path.join(self.vala_test_dir, '5 target glib')
          self.init(testdir)
          compdb = self.get_compdb()
          vala_command = None
          c_command = None
          for each in compdb:
              if each['file'].endswith('GLib.Thread.c'):
                  vala_command = each['command']
              elif each['file'].endswith('GLib.Thread.vala'):
                  continue
              elif each['file'].endswith('retcode.c'):
                  c_command = each['command']
              else:
                  m = 'Unknown file {!r} in vala_c_warnings test'.format(each['file'])
                  raise AssertionError(m)
          self.assertIsNotNone(vala_command)
          self.assertIsNotNone(c_command)
          # -w suppresses all warnings, should be there in Vala but not in C
          self.assertIn(" -w ", vala_command)
          self.assertNotIn(" -w ", c_command)
          # -Wall enables all warnings, should be there in C but not in Vala
          self.assertNotIn(" -Wall ", vala_command)
          self.assertIn(" -Wall ", c_command)
          # -Werror converts warnings to errors, should always be there since it's
          # injected by an unrelated piece of code and the project has werror=true
          self.assertIn(" -Werror ", vala_command)
          self.assertIn(" -Werror ", c_command)
  
      @skipIfNoPkgconfig
      def test_qt5dependency_pkgconfig_detection(self):
          '''
          Test that qt4 and qt5 detection with pkgconfig works.
          '''
          # Verify Qt4 or Qt5 can be found with pkg-config
          qt4 = subprocess.call(['pkg-config', '--exists', 'QtCore'])
          qt5 = subprocess.call(['pkg-config', '--exists', 'Qt5Core'])
          if qt4 != 0 or qt5 != 0:
              raise unittest.SkipTest('Qt not found with pkg-config')
          testdir = os.path.join(self.framework_test_dir, '4 qt')
          self.init(testdir, ['-Dmethod=pkg-config'])
          # Confirm that the dependency was found with pkg-config
          mesonlog = self.get_meson_log()
          self.assertRegex('\n'.join(mesonlog),
                           r'Dependency qt4 \(modules: Core\) found: YES .*, `pkg-config`\n')
          self.assertRegex('\n'.join(mesonlog),
                           r'Dependency qt5 \(modules: Core\) found: YES .*, `pkg-config`\n')
  
      def test_generate_gir_with_address_sanitizer(self):
          if is_cygwin():
              raise unittest.SkipTest('asan not available on Cygwin')
  
          testdir = os.path.join(self.framework_test_dir, '7 gnome')
          self.init(testdir, ['-Db_sanitize=address', '-Db_lundef=false'])
          self.build()
  
      def test_qt5dependency_qmake_detection(self):
          '''
          Test that qt5 detection with qmake works. This can't be an ordinary
          test case because it involves setting the environment.
          '''
          # Verify that qmake is for Qt5
          if not shutil.which('qmake-qt5'):
              if not shutil.which('qmake'):
                  raise unittest.SkipTest('QMake not found')
              output = subprocess.getoutput('qmake --version')
              if 'Qt version 5' not in output:
                  raise unittest.SkipTest('Qmake found, but it is not for Qt 5.')
          # Disable pkg-config codepath and force searching with qmake/qmake-qt5
          testdir = os.path.join(self.framework_test_dir, '4 qt')
          self.init(testdir, ['-Dmethod=qmake'])
          # Confirm that the dependency was found with qmake
          mesonlog = self.get_meson_log()
          self.assertRegex('\n'.join(mesonlog),
                           r'Dependency qt5 \(modules: Core\) found: YES .*, `(qmake|qmake-qt5)`\n')
  
      def _test_soname_impl(self, libpath, install):
          if is_cygwin() or is_osx():
              raise unittest.SkipTest('Test only applicable to ELF and linuxlike sonames')
  
          testdir = os.path.join(self.unit_test_dir, '1 soname')
          self.init(testdir)
          self.build()
          if install:
              self.install()
  
          # File without aliases set.
          nover = os.path.join(libpath, 'libnover.so')
          self.assertPathExists(nover)
          self.assertFalse(os.path.islink(nover))
          self.assertEqual(get_soname(nover), 'libnover.so')
          self.assertEqual(len(glob(nover[:-3] + '*')), 1)
  
          # File with version set
          verset = os.path.join(libpath, 'libverset.so')
          self.assertPathExists(verset + '.4.5.6')
          self.assertEqual(os.readlink(verset), 'libverset.so.4')
          self.assertEqual(get_soname(verset), 'libverset.so.4')
          self.assertEqual(len(glob(verset[:-3] + '*')), 3)
  
          # File with soversion set
          soverset = os.path.join(libpath, 'libsoverset.so')
          self.assertPathExists(soverset + '.1.2.3')
          self.assertEqual(os.readlink(soverset), 'libsoverset.so.1.2.3')
          self.assertEqual(get_soname(soverset), 'libsoverset.so.1.2.3')
          self.assertEqual(len(glob(soverset[:-3] + '*')), 2)
  
          # File with version and soversion set to same values
          settosame = os.path.join(libpath, 'libsettosame.so')
          self.assertPathExists(settosame + '.7.8.9')
          self.assertEqual(os.readlink(settosame), 'libsettosame.so.7.8.9')
          self.assertEqual(get_soname(settosame), 'libsettosame.so.7.8.9')
          self.assertEqual(len(glob(settosame[:-3] + '*')), 2)
  
          # File with version and soversion set to different values
          bothset = os.path.join(libpath, 'libbothset.so')
          self.assertPathExists(bothset + '.1.2.3')
          self.assertEqual(os.readlink(bothset), 'libbothset.so.1.2.3')
          self.assertEqual(os.readlink(bothset + '.1.2.3'), 'libbothset.so.4.5.6')
          self.assertEqual(get_soname(bothset), 'libbothset.so.1.2.3')
          self.assertEqual(len(glob(bothset[:-3] + '*')), 3)
  
      def test_soname(self):
          self._test_soname_impl(self.builddir, False)
  
      def test_installed_soname(self):
          libdir = self.installdir + os.path.join(self.prefix, self.libdir)
          self._test_soname_impl(libdir, True)
  
      def test_compiler_check_flags_order(self):
          '''
          Test that compiler check flags override all other flags. This can't be
          an ordinary test case because it needs the environment to be set.
          '''
          Oflag = '-O3'
          os.environ['CFLAGS'] = os.environ['CXXFLAGS'] = Oflag
          testdir = os.path.join(self.common_test_dir, '40 has function')
          self.init(testdir)
          cmds = self.get_meson_log_compiler_checks()
          for cmd in cmds:
              if cmd[0] == 'ccache':
                  cmd = cmd[1:]
              # Verify that -I flags from the `args` kwarg are first
              # This is set in the '40 has function' test case
              self.assertEqual(cmd[1], '-I/tmp')
              # Verify that -O3 set via the environment is overridden by -O0
              Oargs = [arg for arg in cmd if arg.startswith('-O')]
              self.assertEqual(Oargs, [Oflag, '-O0'])
  
      def _test_stds_impl(self, testdir, compiler, p):
          lang_std = p + '_std'
          # Check that all the listed -std=xxx options for this compiler work
          # just fine when used
          for v in compiler.get_options()[lang_std].choices:
              if (compiler.get_id() == 'clang' and '17' in v and
                  (version_compare(compiler.version, '<5.0.0') or
                   (compiler.clang_type == mesonbuild.compilers.CLANG_OSX and version_compare(compiler.version, '<9.1')))):
                  continue
              if (compiler.get_id() == 'clang' and '2a' in v and
                  (version_compare(compiler.version, '<6.0.0') or
                   (compiler.clang_type == mesonbuild.compilers.CLANG_OSX and version_compare(compiler.version, '<9.1')))):
                  continue
              if (compiler.get_id() == 'gcc' and '2a' in v and version_compare(compiler.version, '<8.0.0')):
                  continue
              std_opt = '{}={}'.format(lang_std, v)
              self.init(testdir, ['-D' + std_opt])
              cmd = self.get_compdb()[0]['command']
              if v != 'none':
                  cmd_std = " -std={} ".format(v)
                  self.assertIn(cmd_std, cmd)
              try:
                  self.build()
              except:
                  print('{} was {!r}'.format(lang_std, v))
                  raise
              self.wipe()
          # Check that an invalid std option in CFLAGS/CPPFLAGS fails
          # Needed because by default ICC ignores invalid options
          cmd_std = '-std=FAIL'
          env_flags = p.upper() + 'FLAGS'
          os.environ[env_flags] = cmd_std
          self.init(testdir)
          cmd = self.get_compdb()[0]['command']
          qcmd_std = " {} ".format(cmd_std)
          self.assertIn(qcmd_std, cmd)
          with self.assertRaises(subprocess.CalledProcessError,
                                 msg='{} should have failed'.format(qcmd_std)):
              self.build()
  
      def test_compiler_c_stds(self):
          '''
          Test that C stds specified for this compiler can all be used. Can't be
          an ordinary test because it requires passing options to meson.
          '''
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          env = get_fake_env(testdir, self.builddir, self.prefix)
          cc = env.detect_c_compiler(False)
          self._test_stds_impl(testdir, cc, 'c')
  
      def test_compiler_cpp_stds(self):
          '''
          Test that C++ stds specified for this compiler can all be used. Can't
          be an ordinary test because it requires passing options to meson.
          '''
          testdir = os.path.join(self.common_test_dir, '2 cpp')
          env = get_fake_env(testdir, self.builddir, self.prefix)
          cpp = env.detect_cpp_compiler(False)
          self._test_stds_impl(testdir, cpp, 'cpp')
  
      def test_unity_subproj(self):
          testdir = os.path.join(self.common_test_dir, '46 subproject')
          self.init(testdir, extra_args='--unity=subprojects')
          self.assertPathExists(os.path.join(self.builddir, 'subprojects/sublib/subprojects@sublib@@simpletest@exe/simpletest-unity.c'))
          self.assertPathExists(os.path.join(self.builddir, 'subprojects/sublib/subprojects@sublib@@sublib@sha/sublib-unity.c'))
          self.assertPathDoesNotExist(os.path.join(self.builddir, 'user@exe/user-unity.c'))
          self.build()
  
      def test_installed_modes(self):
          '''
          Test that files installed by these tests have the correct permissions.
          Can't be an ordinary test because our installed_files.txt is very basic.
          '''
          # Test file modes
          testdir = os.path.join(self.common_test_dir, '12 data')
          self.init(testdir)
          self.install()
  
          f = os.path.join(self.installdir, 'etc', 'etcfile.dat')
          found_mode = stat.filemode(os.stat(f).st_mode)
          want_mode = 'rw------T'
          self.assertEqual(want_mode, found_mode[1:])
  
          f = os.path.join(self.installdir, 'usr', 'bin', 'runscript.sh')
          statf = os.stat(f)
          found_mode = stat.filemode(statf.st_mode)
          want_mode = 'rwxr-sr-x'
          self.assertEqual(want_mode, found_mode[1:])
          if os.getuid() == 0:
              # The chown failed nonfatally if we're not root
              self.assertEqual(0, statf.st_uid)
              self.assertEqual(0, statf.st_gid)
  
          f = os.path.join(self.installdir, 'usr', 'share', 'progname',
                           'fileobject_datafile.dat')
          orig = os.path.join(testdir, 'fileobject_datafile.dat')
          statf = os.stat(f)
          statorig = os.stat(orig)
          found_mode = stat.filemode(statf.st_mode)
          orig_mode = stat.filemode(statorig.st_mode)
          self.assertEqual(orig_mode[1:], found_mode[1:])
          self.assertEqual(os.getuid(), statf.st_uid)
          if os.getuid() == 0:
              # The chown failed nonfatally if we're not root
              self.assertEqual(0, statf.st_gid)
  
          self.wipe()
          # Test directory modes
          testdir = os.path.join(self.common_test_dir, '63 install subdir')
          self.init(testdir)
          self.install()
  
          f = os.path.join(self.installdir, 'usr', 'share', 'sub1', 'second.dat')
          statf = os.stat(f)
          found_mode = stat.filemode(statf.st_mode)
          want_mode = 'rwxr-x--t'
          self.assertEqual(want_mode, found_mode[1:])
          if os.getuid() == 0:
              # The chown failed nonfatally if we're not root
              self.assertEqual(0, statf.st_uid)
  
      def test_installed_modes_extended(self):
          '''
          Test that files are installed with correct permissions using install_mode.
          '''
          testdir = os.path.join(self.common_test_dir, '196 install_mode')
          self.init(testdir)
          self.build()
          self.install()
  
          for fsobj, want_mode in [
                  ('bin', 'drwxr-x---'),
                  ('bin/runscript.sh', '-rwxr-sr-x'),
                  ('bin/trivialprog', '-rwxr-sr-x'),
                  ('include', 'drwxr-x---'),
                  ('include/config.h', '-rw-rwSr--'),
                  ('include/rootdir.h', '-r--r--r-T'),
                  ('lib', 'drwxr-x---'),
                  ('lib/libstat.a', '-rw---Sr--'),
                  ('share', 'drwxr-x---'),
                  ('share/man', 'drwxr-x---'),
                  ('share/man/man1', 'drwxr-x---'),
                  ('share/man/man1/foo.1.gz', '-r--r--r-T'),
                  ('share/sub1', 'drwxr-x---'),
                  ('share/sub1/second.dat', '-rwxr-x--t'),
                  ('subdir', 'drwxr-x---'),
                  ('subdir/data.dat', '-rw-rwSr--'),
          ]:
              f = os.path.join(self.installdir, 'usr', *fsobj.split('/'))
              found_mode = stat.filemode(os.stat(f).st_mode)
              self.assertEqual(want_mode, found_mode,
                               msg=('Expected file %s to have mode %s but found %s instead.' %
                                    (fsobj, want_mode, found_mode)))
          # Ensure that introspect --installed works on all types of files
          # FIXME: also verify the files list
          self.introspect('--installed')
  
      def test_install_umask(self):
          '''
          Test that files are installed with correct permissions using default
          install umask of 022, regardless of the umask at time the worktree
          was checked out or the build was executed.
          '''
          # Copy source tree to a temporary directory and change permissions
          # there to simulate a checkout with umask 002.
          orig_testdir = os.path.join(self.unit_test_dir, '26 install umask')
          # Create a new testdir under tmpdir.
          tmpdir = os.path.realpath(tempfile.mkdtemp())
          self.addCleanup(windows_proof_rmtree, tmpdir)
          testdir = os.path.join(tmpdir, '26 install umask')
          # Copy the tree using shutil.copyfile, which will use the current umask
          # instead of preserving permissions of the old tree.
          save_umask = os.umask(0o002)
          self.addCleanup(os.umask, save_umask)
          shutil.copytree(orig_testdir, testdir, copy_function=shutil.copyfile)
          # Preserve the executable status of subdir/sayhello though.
          os.chmod(os.path.join(testdir, 'subdir', 'sayhello'), 0o775)
          self.init(testdir)
          # Run the build under a 027 umask now.
          os.umask(0o027)
          self.build()
          # And keep umask 027 for the install step too.
          self.install()
  
          for executable in [
                  'bin/prog',
                  'share/subdir/sayhello',
          ]:
              f = os.path.join(self.installdir, 'usr', *executable.split('/'))
              found_mode = stat.filemode(os.stat(f).st_mode)
              want_mode = '-rwxr-xr-x'
              self.assertEqual(want_mode, found_mode,
                               msg=('Expected file %s to have mode %s but found %s instead.' %
                                    (executable, want_mode, found_mode)))
  
          for directory in [
                  'usr',
                  'usr/bin',
                  'usr/include',
                  'usr/share',
                  'usr/share/man',
                  'usr/share/man/man1',
                  'usr/share/subdir',
          ]:
              f = os.path.join(self.installdir, *directory.split('/'))
              found_mode = stat.filemode(os.stat(f).st_mode)
              want_mode = 'drwxr-xr-x'
              self.assertEqual(want_mode, found_mode,
                               msg=('Expected directory %s to have mode %s but found %s instead.' %
                                    (directory, want_mode, found_mode)))
  
          for datafile in [
                  'include/sample.h',
                  'share/datafile.cat',
                  'share/file.dat',
                  'share/man/man1/prog.1.gz',
                  'share/subdir/datafile.dog',
          ]:
              f = os.path.join(self.installdir, 'usr', *datafile.split('/'))
              found_mode = stat.filemode(os.stat(f).st_mode)
              want_mode = '-rw-r--r--'
              self.assertEqual(want_mode, found_mode,
                               msg=('Expected file %s to have mode %s but found %s instead.' %
                                    (datafile, want_mode, found_mode)))
  
      def test_cpp_std_override(self):
          testdir = os.path.join(self.unit_test_dir, '6 std override')
          self.init(testdir)
          compdb = self.get_compdb()
          for i in compdb:
              if 'prog03' in i['file']:
                  c03_comp = i['command']
              if 'prog11' in i['file']:
                  c11_comp = i['command']
              if 'progp' in i['file']:
                  plain_comp = i['command']
          self.assertNotEqual(len(plain_comp), 0)
          self.assertIn('-std=c++03', c03_comp)
          self.assertNotIn('-std=c++11', c03_comp)
          self.assertIn('-std=c++11', c11_comp)
          self.assertNotIn('-std=c++03', c11_comp)
          self.assertNotIn('-std=c++03', plain_comp)
          self.assertNotIn('-std=c++11', plain_comp)
          # Now werror
          self.assertIn('-Werror', plain_comp)
          self.assertNotIn('-Werror', c03_comp)
  
      def test_run_installed(self):
          if is_cygwin() or is_osx():
              raise unittest.SkipTest('LD_LIBRARY_PATH and RPATH not applicable')
  
          testdir = os.path.join(self.unit_test_dir, '7 run installed')
          self.init(testdir)
          self.build()
          self.install()
          installed_exe = os.path.join(self.installdir, 'usr/bin/prog')
          installed_libdir = os.path.join(self.installdir, 'usr/foo')
          installed_lib = os.path.join(installed_libdir, 'libfoo.so')
          self.assertTrue(os.path.isfile(installed_exe))
          self.assertTrue(os.path.isdir(installed_libdir))
          self.assertTrue(os.path.isfile(installed_lib))
          # Must fail when run without LD_LIBRARY_PATH to ensure that
          # rpath has been properly stripped rather than pointing to the builddir.
          self.assertNotEqual(subprocess.call(installed_exe, stderr=subprocess.DEVNULL), 0)
          # When LD_LIBRARY_PATH is set it should start working.
          # For some reason setting LD_LIBRARY_PATH in os.environ fails
          # when all tests are run (but works when only this test is run),
          # but doing this explicitly works.
          env = os.environ.copy()
          env['LD_LIBRARY_PATH'] = installed_libdir
          self.assertEqual(subprocess.call(installed_exe, env=env), 0)
          # Ensure that introspect --installed works
          installed = self.introspect('--installed')
          for v in installed.values():
              self.assertTrue('prog' in v or 'foo' in v)
  
      @skipIfNoPkgconfig
      def test_order_of_l_arguments(self):
          testdir = os.path.join(self.unit_test_dir, '8 -L -l order')
          os.environ['PKG_CONFIG_PATH'] = testdir
          self.init(testdir)
          # NOTE: .pc file has -Lfoo -lfoo -Lbar -lbar but pkg-config reorders
          # the flags before returning them to -Lfoo -Lbar -lfoo -lbar
          # but pkgconf seems to not do that. Sigh. Support both.
          expected_order = [('-L/me/first', '-lfoo1'),
                            ('-L/me/second', '-lfoo2'),
                            ('-L/me/first', '-L/me/second'),
                            ('-lfoo1', '-lfoo2'),
                            ('-L/me/second', '-L/me/third'),
                            ('-L/me/third', '-L/me/fourth',),
                            ('-L/me/third', '-lfoo3'),
                            ('-L/me/fourth', '-lfoo4'),
                            ('-lfoo3', '-lfoo4'),
                            ]
          with open(os.path.join(self.builddir, 'build.ninja')) as ifile:
              for line in ifile:
                  if expected_order[0][0] in line:
                      for first, second in expected_order:
                          self.assertLess(line.index(first), line.index(second))
                      return
          raise RuntimeError('Linker entries not found in the Ninja file.')
  
      def test_introspect_dependencies(self):
          '''
          Tests that mesonintrospect --dependencies returns expected output.
          '''
          testdir = os.path.join(self.framework_test_dir, '7 gnome')
          self.init(testdir)
          glib_found = False
          gobject_found = False
          deps = self.introspect('--dependencies')
          self.assertIsInstance(deps, list)
          for dep in deps:
              self.assertIsInstance(dep, dict)
              self.assertIn('name', dep)
              self.assertIn('compile_args', dep)
              self.assertIn('link_args', dep)
              if dep['name'] == 'glib-2.0':
                  glib_found = True
              elif dep['name'] == 'gobject-2.0':
                  gobject_found = True
          self.assertTrue(glib_found)
          self.assertTrue(gobject_found)
          if subprocess.call(['pkg-config', '--exists', 'glib-2.0 >= 2.56.2']) != 0:
              raise unittest.SkipTest('glib >= 2.56.2 needed for the rest')
          targets = self.introspect('--targets')
          docbook_target = None
          for t in targets:
              if t['name'] == 'generated-gdbus-docbook':
                  docbook_target = t
                  break
          self.assertIsInstance(docbook_target, dict)
          ifile = self.introspect(['--target-files', 'generated-gdbus-docbook@cus'])[0]
          self.assertEqual(t['filename'], 'gdbus/generated-gdbus-doc-' + ifile)
  
      def test_build_rpath(self):
          if is_cygwin():
              raise unittest.SkipTest('Windows PE/COFF binaries do not use RPATH')
          testdir = os.path.join(self.unit_test_dir, '10 build_rpath')
          self.init(testdir)
          self.build()
          # C program RPATH
          build_rpath = get_rpath(os.path.join(self.builddir, 'prog'))
          self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar')
          self.install()
          install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/prog'))
          self.assertEqual(install_rpath, '/baz')
          # C++ program RPATH
          build_rpath = get_rpath(os.path.join(self.builddir, 'progcxx'))
          self.assertEqual(build_rpath, '$ORIGIN/sub:/foo/bar')
          self.install()
          install_rpath = get_rpath(os.path.join(self.installdir, 'usr/bin/progcxx'))
          self.assertEqual(install_rpath, 'baz')
  
      def test_pch_with_address_sanitizer(self):
          if is_cygwin():
              raise unittest.SkipTest('asan not available on Cygwin')
  
          testdir = os.path.join(self.common_test_dir, '13 pch')
          self.init(testdir, ['-Db_sanitize=address'])
          self.build()
          compdb = self.get_compdb()
          for i in compdb:
              self.assertIn("-fsanitize=address", i["command"])
  
      def test_coverage(self):
          gcovr_exe, gcovr_new_rootdir = mesonbuild.environment.detect_gcovr()
          if not gcovr_exe:
              raise unittest.SkipTest('gcovr not found')
          if not shutil.which('genhtml') and not gcovr_new_rootdir:
              raise unittest.SkipTest('genhtml not found and gcovr is too old')
          if 'clang' in os.environ.get('CC', ''):
              # We need to use llvm-cov instead of gcovr with clang
              raise unittest.SkipTest('Coverage does not work with clang right now, help wanted!')
          testdir = os.path.join(self.common_test_dir, '1 trivial')
          self.init(testdir, ['-Db_coverage=true'])
          self.build()
          self.run_tests()
          self.run_target('coverage-html')
  
      def test_cross_find_program(self):
          testdir = os.path.join(self.unit_test_dir, '11 cross prog')
          crossfile = tempfile.NamedTemporaryFile(mode='w')
          print(os.path.join(testdir, 'some_cross_tool.py'))
          crossfile.write('''[binaries]
  c = '/usr/bin/cc'
  ar = '/usr/bin/ar'
  strip = '/usr/bin/ar'
  sometool.py = ['{0}']
  someothertool.py = '{0}'
  
  [properties]
  
  [host_machine]
  system = 'linux'
  cpu_family = 'arm'
  cpu = 'armv7' # Not sure if correct.
  endian = 'little'
  '''.format(os.path.join(testdir, 'some_cross_tool.py')))
          crossfile.flush()
          self.meson_cross_file = crossfile.name
          self.init(testdir)
  
      def test_reconfigure(self):
          testdir = os.path.join(self.unit_test_dir, '13 reconfigure')
          self.init(testdir, ['-Db_coverage=true'], default_args=False)
          self.build('reconfigure')
  
      def test_vala_generated_source_buildir_inside_source_tree(self):
          '''
          Test that valac outputs generated C files in the expected location when
          the builddir is a subdir of the source tree.
          '''
          if not shutil.which('valac'):
              raise unittest.SkipTest('valac not installed.')
  
          testdir = os.path.join(self.vala_test_dir, '8 generated sources')
          newdir = os.path.join(self.builddir, 'srctree')
          shutil.copytree(testdir, newdir)
          testdir = newdir
          # New builddir
          builddir = os.path.join(testdir, 'subdir/_build')
          os.makedirs(builddir, exist_ok=True)
          self.change_builddir(builddir)
          self.init(testdir)
          self.build()
  
      def test_old_gnome_module_codepaths(self):
          '''
          A lot of code in the GNOME module is conditional on the version of the
          glib tools that are installed, and breakages in the old code can slip
          by once the CI has a newer glib version. So we force the GNOME module
          to pretend that it's running on an ancient glib so the fallback code is
          also tested.
          '''
          testdir = os.path.join(self.framework_test_dir, '7 gnome')
          os.environ['MESON_UNIT_TEST_PRETEND_GLIB_OLD'] = "1"
          mesonbuild.modules.gnome.native_glib_version = '2.20'
          self.init(testdir, inprocess=True)
          self.build()
          mesonbuild.modules.gnome.native_glib_version = None
  
      @skipIfNoPkgconfig
      def test_pkgconfig_usage(self):
          testdir1 = os.path.join(self.unit_test_dir, '27 pkgconfig usage/dependency')
          testdir2 = os.path.join(self.unit_test_dir, '27 pkgconfig usage/dependee')
          if subprocess.call(['pkg-config', '--cflags', 'glib-2.0'],
                             stdout=subprocess.DEVNULL,
                             stderr=subprocess.DEVNULL) != 0:
              raise unittest.SkipTest('Glib 2.0 dependency not available.')
          with tempfile.TemporaryDirectory() as tempdirname:
              self.init(testdir1, ['--prefix=' + tempdirname, '--libdir=lib'], default_args=False)
              self.install(use_destdir=False)
              shutil.rmtree(self.builddir)
              os.mkdir(self.builddir)
              pkg_dir = os.path.join(tempdirname, 'lib/pkgconfig')
              self.assertTrue(os.path.exists(os.path.join(pkg_dir, 'libpkgdep.pc')))
              lib_dir = os.path.join(tempdirname, 'lib')
              os.environ['PKG_CONFIG_PATH'] = pkg_dir
              # Private internal libraries must not leak out.
              pkg_out = subprocess.check_output(['pkg-config', '--static', '--libs', 'libpkgdep'])
              self.assertFalse(b'libpkgdep-int' in pkg_out, 'Internal library leaked out.')
              # Dependencies must not leak to cflags when building only a shared library.
              pkg_out = subprocess.check_output(['pkg-config', '--cflags', 'libpkgdep'])
              self.assertFalse(b'glib' in pkg_out, 'Internal dependency leaked to headers.')
              # Test that the result is usable.
              self.init(testdir2)
              self.build()
              myenv = os.environ.copy()
              myenv['LD_LIBRARY_PATH'] = lib_dir
              if is_cygwin():
                  bin_dir = os.path.join(tempdirname, 'bin')
                  myenv['PATH'] = bin_dir + os.pathsep + myenv['PATH']
              self.assertTrue(os.path.isdir(lib_dir))
              test_exe = os.path.join(self.builddir, 'pkguser')
              self.assertTrue(os.path.isfile(test_exe))
              subprocess.check_call(test_exe, env=myenv)
  
      @skipIfNoPkgconfig
      def test_pkgconfig_internal_libraries(self):
          '''
          '''
          with tempfile.TemporaryDirectory() as tempdirname:
              # build library
              testdirbase = os.path.join(self.unit_test_dir, '32 pkgconfig use libraries')
              testdirlib = os.path.join(testdirbase, 'lib')
              self.init(testdirlib, extra_args=['--prefix=' + tempdirname,
                                                '--libdir=lib',
                                                '--default-library=static'], default_args=False)
              self.build()
              self.install(use_destdir=False)
  
              # build user of library
              pkg_dir = os.path.join(tempdirname, 'lib/pkgconfig')
              os.environ['PKG_CONFIG_PATH'] = pkg_dir
              self.new_builddir()
              self.init(os.path.join(testdirbase, 'app'))
              self.build()
  
      @skipIfNoPkgconfig
      def test_pkgconfig_formatting(self):
          testdir = os.path.join(self.unit_test_dir, '38 pkgconfig format')
          self.init(testdir)
          myenv = os.environ.copy()
          myenv['PKG_CONFIG_PATH'] = self.privatedir
          stdo = subprocess.check_output(['pkg-config', '--libs-only-l', 'libsomething'], env=myenv)
          deps = [b'-lgobject-2.0', b'-lgio-2.0', b'-lglib-2.0', b'-lsomething']
          if is_windows() or is_cygwin() or is_osx():
              # On Windows, libintl is a separate library
              deps.append(b'-lintl')
          self.assertEqual(set(deps), set(stdo.split()))
  
      def test_deterministic_dep_order(self):
          '''
          Test that the dependencies are always listed in a deterministic order.
          '''
          testdir = os.path.join(self.unit_test_dir, '43 dep order')
          self.init(testdir)
          with open(os.path.join(self.builddir, 'build.ninja')) as bfile:
              for line in bfile:
                  if 'build myexe:' in line or 'build myexe.exe:' in line:
                      self.assertIn('liblib1.a liblib2.a', line)
                      return
          raise RuntimeError('Could not find the build rule')
  
      def test_deterministic_rpath_order(self):
          '''
          Test that the rpaths are always listed in a deterministic order.
          '''
          if is_cygwin():
              raise unittest.SkipTest('rpath are not used on Cygwin')
          testdir = os.path.join(self.unit_test_dir, '42 rpath order')
          self.init(testdir)
          if is_osx():
              rpathre = re.compile('-rpath,.*/subprojects/sub1.*-rpath,.*/subprojects/sub2')
          else:
              rpathre = re.compile('-rpath,\$\$ORIGIN/subprojects/sub1:\$\$ORIGIN/subprojects/sub2')
          with open(os.path.join(self.builddir, 'build.ninja')) as bfile:
              for line in bfile:
                  if '-rpath' in line:
                      self.assertRegex(line, rpathre)
                      return
          raise RuntimeError('Could not find the rpath')
  
      def test_override_with_exe_dep(self):
          '''
          Test that we produce the correct dependencies when a program is overridden with an executable.
          '''
          testdir = os.path.join(self.common_test_dir, '202 override with exe')
          self.init(testdir)
          with open(os.path.join(self.builddir, 'build.ninja')) as bfile:
              for line in bfile:
                  if 'main1.c:' in line or 'main2.c:' in line:
                      self.assertIn('| subprojects/sub/foobar', line)
  
      @skipIfNoPkgconfig
      def test_usage_external_library(self):
          '''
          Test that uninstalled usage of an external library (from the system or
          PkgConfigDependency) works. On macOS, this workflow works out of the
          box. On Linux, BSDs, Windows, etc, you need to set extra arguments such
          as LD_LIBRARY_PATH, etc, so this test is skipped.
  
          The system library is found with cc.find_library() and pkg-config deps.
          '''
          oldprefix = self.prefix
          # Install external library so we can find it
          testdir = os.path.join(self.unit_test_dir, '40 external, internal library rpath', 'external library')
          # install into installdir without using DESTDIR
          installdir = self.installdir
          self.prefix = installdir
          self.init(testdir)
          self.prefix = oldprefix
          self.build()
          self.install(use_destdir=False)
          ## New builddir for the consumer
          self.new_builddir()
          os.environ['LIBRARY_PATH'] = os.path.join(installdir, self.libdir)
          os.environ['PKG_CONFIG_PATH'] = os.path.join(installdir, self.libdir, 'pkgconfig')
          testdir = os.path.join(self.unit_test_dir, '40 external, internal library rpath', 'built library')
          # install into installdir without using DESTDIR
          self.prefix = self.installdir
          self.init(testdir)
          self.prefix = oldprefix
          self.build()
          # test uninstalled
          self.run_tests()
          if not is_osx():
              # Rest of the workflow only works on macOS
              return
          # test running after installation
          self.install(use_destdir=False)
          prog = os.path.join(self.installdir, 'bin', 'prog')
          self._run([prog])
          out = self._run(['otool', '-L', prog])
          self.assertNotIn('@rpath', out)
          ## New builddir for testing that DESTDIR is not added to install_name
          self.new_builddir()
          # install into installdir with DESTDIR
          self.init(testdir)
          self.build()
          # test running after installation
          self.install()
          prog = self.installdir + os.path.join(self.prefix, 'bin', 'prog')
          lib = self.installdir + os.path.join(self.prefix, 'lib', 'libbar_built.dylib')
          for f in prog, lib:
              out = self._run(['otool', '-L', f])
              # Ensure that the otool output does not contain self.installdir
              self.assertNotRegex(out, self.installdir + '.*dylib ')
  
      def install_subdir_invalid_symlinks(self, testdir, subdir_path):
          '''
          Test that installation of broken symlinks works fine.
          https://github.com/mesonbuild/meson/issues/3914
          '''
          testdir = os.path.join(self.common_test_dir, testdir)
          subdir = os.path.join(testdir, subdir_path)
          curdir = os.getcwd()
          os.chdir(subdir)
          # Can't distribute broken symlinks in the source tree because it breaks
          # the creation of zipapps. Create it dynamically and run the test by
          # hand.
          src = '../../nonexistent.txt'
          os.symlink(src, 'invalid-symlink.txt')
          try:
              self.init(testdir)
              self.build()
              self.install()
              install_path = subdir_path.split(os.path.sep)[-1]
              link = os.path.join(self.installdir, 'usr', 'share', install_path, 'invalid-symlink.txt')
              self.assertTrue(os.path.islink(link), msg=link)
              self.assertEqual(src, os.readlink(link))
              self.assertFalse(os.path.isfile(link), msg=link)
          finally:
              os.remove(os.path.join(subdir, 'invalid-symlink.txt'))
              os.chdir(curdir)
  
      def test_install_subdir_symlinks(self):
          self.install_subdir_invalid_symlinks('63 install subdir', os.path.join('sub', 'sub1'))
  
      def test_install_subdir_symlinks_with_default_umask(self):
          self.install_subdir_invalid_symlinks('196 install_mode', 'sub2')
  
      def test_install_subdir_symlinks_with_default_umask_and_mode(self):
          self.install_subdir_invalid_symlinks('196 install_mode', 'sub1')
  
  
  class LinuxCrossArmTests(BasePlatformTests):
      '''
      Tests that cross-compilation to Linux/ARM works
      '''
      def setUp(self):
          super().setUp()
          src_root = os.path.dirname(__file__)
          self.meson_cross_file = os.path.join(src_root, 'cross', 'ubuntu-armhf.txt')
  
      def test_cflags_cross_environment_pollution(self):
          '''
          Test that the CFLAGS environment variable does not pollute the cross
          environment. This can't be an ordinary test case because we need to
          inspect the compiler database.
          '''
          testdir = os.path.join(self.common_test_dir, '3 static')
          os.environ['CFLAGS'] = '-DBUILD_ENVIRONMENT_ONLY'
          self.init(testdir)
          compdb = self.get_compdb()
          self.assertNotIn('-DBUILD_ENVIRONMENT_ONLY', compdb[0]['command'])
  
      def test_cross_file_overrides_always_args(self):
          '''
          Test that $lang_args in cross files always override get_always_args().
          Needed for overriding the default -D_FILE_OFFSET_BITS=64 on some
          architectures such as some Android versions and Raspbian.
          https://github.com/mesonbuild/meson/issues/3049
          https://github.com/mesonbuild/meson/issues/3089
          '''
          testdir = os.path.join(self.unit_test_dir, '33 cross file overrides always args')
          self.meson_cross_file = os.path.join(testdir, 'ubuntu-armhf-overrides.txt')
          self.init(testdir)
          compdb = self.get_compdb()
          self.assertRegex(compdb[0]['command'], '-D_FILE_OFFSET_BITS=64.*-U_FILE_OFFSET_BITS')
          self.build()
  
  class LinuxCrossMingwTests(BasePlatformTests):
      '''
      Tests that cross-compilation to Windows/MinGW works
      '''
      def setUp(self):
          super().setUp()
          src_root = os.path.dirname(__file__)
          self.meson_cross_file = os.path.join(src_root, 'cross', 'linux-mingw-w64-64bit.txt')
  
      def test_exe_wrapper_behaviour(self):
          '''
          Test that an exe wrapper that isn't found doesn't cause compiler sanity
          checks and compiler checks to fail, but causes configure to fail if it
          requires running a cross-built executable (custom_target or run_target)
          and causes the tests to be skipped if they are run.
          '''
          testdir = os.path.join(self.unit_test_dir, '36 exe_wrapper behaviour')
          # Configures, builds, and tests fine by default
          self.init(testdir)
          self.build()
          self.run_tests()
          self.wipe()
          os.mkdir(self.builddir)
          # Change cross file to use a non-existing exe_wrapper and it should fail
          self.meson_cross_file = os.path.join(testdir, 'broken-cross.txt')
          # Force tracebacks so we can detect them properly
          os.environ['MESON_FORCE_BACKTRACE'] = '1'
          with self.assertRaisesRegex(MesonException, 'exe_wrapper.*target.*use-exe-wrapper'):
              # Must run in-process or we'll get a generic CalledProcessError
              self.init(testdir, extra_args='-Drun-target=false', inprocess=True)
          with self.assertRaisesRegex(MesonException, 'exe_wrapper.*run target.*run-prog'):
              # Must run in-process or we'll get a generic CalledProcessError
              self.init(testdir, extra_args='-Dcustom-target=false', inprocess=True)
          self.init(testdir, extra_args=['-Dcustom-target=false', '-Drun-target=false'])
          self.build()
          with self.assertRaisesRegex(MesonException, 'exe_wrapper.*PATH'):
              # Must run in-process or we'll get a generic CalledProcessError
              self.run_tests(inprocess=True)
  
  
  class PythonTests(BasePlatformTests):
      '''
      Tests that verify compilation of python extension modules
      '''
      def test_versions(self):
          if self.backend is not Backend.ninja:
              raise unittest.SkipTest('Skipping python tests with {} backend'.format(self.backend.name))
  
          testdir = os.path.join(self.src_root, 'test cases', 'unit', '39 python extmodule')
  
          # No python version specified, this will use meson's python
          self.init(testdir)
          self.build()
          self.run_tests()
          self.wipe()
  
          # When specifying a known name, (python2 / python3) the module
          # will also try 'python' as a fallback and use it if the major
          # version matches
          try:
              self.init(testdir, ['-Dpython=python2'])
              self.build()
              self.run_tests()
          except unittest.SkipTest:
              # python2 is not necessarily installed on the test machine,
              # if it is not, or the python headers can't be found, the test
              # will raise MESON_SKIP_TEST, we could check beforehand what version
              # of python is available, but it's a bit of a chicken and egg situation,
              # as that is the job of the module, so we just ask for forgiveness rather
              # than permission.
              pass
  
          self.wipe()
  
          for py in ('pypy', 'pypy3'):
              try:
                  self.init(testdir, ['-Dpython=%s' % py])
              except unittest.SkipTest:
                  # Same as above, pypy2 and pypy3 are not expected to be present
                  # on the test system, the test project only raises in these cases
                  continue
  
              # We have a pypy, this is expected to work
              self.build()
              self.run_tests()
              self.wipe()
  
          # The test is configured to error out with MESON_SKIP_TEST
          # in case it could not find python
          with self.assertRaises(unittest.SkipTest):
              self.init(testdir, ['-Dpython=not-python'])
          self.wipe()
  
          # While dir is an external command on both Windows and Linux,
          # it certainly isn't python
          with self.assertRaises(unittest.SkipTest):
              self.init(testdir, ['-Dpython=dir'])
          self.wipe()
  
  
  class RewriterTests(unittest.TestCase):
  
      def setUp(self):
          super().setUp()
          src_root = os.path.dirname(__file__)
          self.testroot = os.path.realpath(tempfile.mkdtemp())
          self.rewrite_command = python_command + [os.path.join(src_root, 'mesonrewriter.py')]
          self.tmpdir = os.path.realpath(tempfile.mkdtemp())
          self.workdir = os.path.join(self.tmpdir, 'foo')
          self.test_dir = os.path.join(src_root, 'test cases/rewrite')
  
      def tearDown(self):
          windows_proof_rmtree(self.tmpdir)
  
      def read_contents(self, fname):
          with open(os.path.join(self.workdir, fname)) as f:
              return f.read()
  
      def check_effectively_same(self, mainfile, truth):
          mf = self.read_contents(mainfile)
          t = self.read_contents(truth)
          # Rewriting is not guaranteed to do a perfect job of
          # maintaining whitespace.
          self.assertEqual(mf.replace(' ', ''), t.replace(' ', ''))
  
      def prime(self, dirname):
          shutil.copytree(os.path.join(self.test_dir, dirname), self.workdir)
  
      def test_basic(self):
          self.prime('1 basic')
          subprocess.check_call(self.rewrite_command + ['remove',
                                                        '--target=trivialprog',
                                                        '--filename=notthere.c',
                                                        '--sourcedir', self.workdir],
                                universal_newlines=True)
          self.check_effectively_same('meson.build', 'removed.txt')
          subprocess.check_call(self.rewrite_command + ['add',
                                                        '--target=trivialprog',
                                                        '--filename=notthere.c',
                                                        '--sourcedir', self.workdir],
                                universal_newlines=True)
          self.check_effectively_same('meson.build', 'added.txt')
          subprocess.check_call(self.rewrite_command + ['remove',
                                                        '--target=trivialprog',
                                                        '--filename=notthere.c',
                                                        '--sourcedir', self.workdir],
                                universal_newlines=True)
          self.check_effectively_same('meson.build', 'removed.txt')
  
      def test_subdir(self):
          self.prime('2 subdirs')
          top = self.read_contents('meson.build')
          s2 = self.read_contents('sub2/meson.build')
          subprocess.check_call(self.rewrite_command + ['remove',
                                                        '--target=something',
                                                        '--filename=second.c',
                                                        '--sourcedir', self.workdir],
                                universal_newlines=True)
          self.check_effectively_same('sub1/meson.build', 'sub1/after.txt')
          self.assertEqual(top, self.read_contents('meson.build'))
          self.assertEqual(s2, self.read_contents('sub2/meson.build'))
  
  
  def unset_envs():
      # For unit tests we must fully control all command lines
      # so that there are no unexpected changes coming from the
      # environment, for example when doing a package build.
      varnames = ['CPPFLAGS', 'LDFLAGS'] + list(mesonbuild.compilers.compilers.cflags_mapping.values())
      for v in varnames:
          if v in os.environ:
              del os.environ[v]
  
  def should_run_cross_arm_tests():
      return shutil.which('arm-linux-gnueabihf-gcc') and not platform.machine().lower().startswith('arm')
  
  def should_run_cross_mingw_tests():
      return shutil.which('x86_64-w64-mingw32-gcc') and not (is_windows() or is_cygwin())
  
  if __name__ == '__main__':
      unset_envs()
      cases = ['InternalTests', 'DataTests', 'AllPlatformTests', 'FailureTests', 'PythonTests']
      if not is_windows():
          cases += ['LinuxlikeTests']
          if should_run_cross_arm_tests():
              cases += ['LinuxCrossArmTests']
          if should_run_cross_mingw_tests():
              cases += ['LinuxCrossMingwTests']
      if is_windows() or is_cygwin():
          cases += ['WindowsTests']
      if is_osx():
          cases += ['DarwinTests']
  
      unittest.main(defaultTest=cases, buffer=True)
  