message: Set rpath if not --use_system_clang
diff: @@ -95,6 +95,7 @@ def configure(conf):
  conf.check(header_name='stdio.h', features='cxx cxxprogram', mandatory=True)
  conf.load('clang_compilation_database', tooldir='.')
  + conf.env['use_system_clang'] = conf.options.use_system_clang
  if conf.options.use_system_clang:
  # Ask llvm-config for cflags and ldflags
  conf.find_program(conf.options.llvm_config, msg='checking for llvm-config', var='LLVM_CONFIG', mandatory=False)
  @@ -184,6 +185,7 @@ def build(bld):
  'third_party/sparsepp/'],
  defines=['LOGURU_WITH_STREAMS=1'],
  lib=lib,
  + rpath=[] if bld.env['use_system_clang'] else bld.env['LIBPATH_clang'],
  target='app')
  #bld.shlib(source='a.cpp', target='mylib', vnum='9.8.7')
  