text: # For God's sake, don't forget to rename this .ycm_extra_conf.py
  
  # Note the leading dot!  I downloaded this, configured it endlessly and nothing
  # seemed to improve...Only to find out I didn't put the dot in the beginning because it got replaced
  # with an underscore by my browser...Maybe I'm an idiot, but don't let this happen to you!
  
  
  import os
  import ycm_core
  from clang_helpers import PrepareClangFlags
  
  # Set this to the absolute path to the folder (NOT the file!) containing the
  # compile_commands.json file to use that instead of 'flags'. See here for
  # more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
  # Most projects will NOT need to set this to anything; you can just change the
  # 'flags' list of compilation flags. Notice that YCM itself uses that approach.
  compilation_database_folder = ""
  
  # These are the compilation flags that will be used in case there's no
  # compilation database set.
  flags = [
      # "-D__AVR_ATtiny167__",
      "-D__AVR_ATmega328P__",
      # THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
      # language to use when compiling headers. So it will guess. Badly. So C++
      # headers will be compiled as C headers. You don't want that so ALWAYS specify
      # a "-std=<something>".
      # For a C project, you would set this to something like 'c99' instead of
      # 'c++11'.
      "-std=c99",
      # ...and the same thing goes for the magic -x option which specifies the
      # language that the files to be compiled are written in. This is mostly
      # relevant for c++ headers.
      # For a C project, you would set this to 'c' instead of 'c++'.
      "-isystem",
      "/opt/avr8-gnu-toolchain-linux_x86_64/avr/include",
      "-isystem",
      "/usr/avr/include/avr",
      "-DF_CPU=16000000UL",
      "-DARCH=ARCH_ATTINY",
      "-DF_USB=16000000",
      "-DBOARD=BOARD_NONE",
      "-DFLASH_SIZE_BYTES=128000",
      "-DBOOTLOADER_SEC_SIZE_BYTES=8192",
      "-DUSB_DEVICE_ONLY",
      "-DNO_STREAM_CALLBACKS",
      "-DINTERRUPT_CONTROL_ENDPOINT",
      "-DUSE_FLASH_DESCRIPTORS",
      '-DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_PLLCLKSRC)"',
      "-DFIXED_CONTROL_ENDPOINT_SIZE=32",
      "-DFIXED_NUM_CONFIGURATIONS=1",
      "-DMPU9150",
      "-Os",
      "-funsigned-char",
      "-fpack-struct",
      "-fshort-enums",
      "-Wall",
      "-Wstrict-prototypes",
      "-I",
      ".",
      "-I",
      "./XMEGA/",
      "-I",
      "include",
      "-I",
      "inc",
      "-I.",
      # This path is for AVR gcc.
  ]
  
  if compilation_database_folder:
      database = ycm_core.CompilationDatabase(compilation_database_folder)
  else:
      database = None
  
  
  def DirectoryOfThisScript():
      return os.path.dirname(os.path.abspath(__file__))
  
  
  def MakeRelativePathsInFlagsAbsolute(flags, working_directory):
      if not working_directory:
          return flags
      new_flags = []
      make_next_absolute = False
      path_flags = ["-isystem", "-I", "-iquote", "--sysroot="]
      for flag in flags:
          new_flag = flag
  
          if make_next_absolute:
              make_next_absolute = False
              if not flag.startswith("/"):
                  new_flag = os.path.join(working_directory, flag)
  
          for path_flag in path_flags:
              if flag == path_flag:
                  make_next_absolute = True
                  break
  
              if flag.startswith(path_flag):
                  path = flag[len(path_flag) :]
                  new_flag = path_flag + os.path.join(working_directory, path)
                  break
  
          if new_flag:
              new_flags.append(new_flag)
      return new_flags
  
  
  def FlagsForFile(filename):
      if database:
          # Bear in mind that compilation_info.compiler_flags_ does NOT return a
          # python list, but a "list-like" StringVec object
          compilation_info = database.GetCompilationInfoForFile(filename)
          final_flags = PrepareClangFlags(
              MakeRelativePathsInFlagsAbsolute(
                  compilation_info.compiler_flags_,
                  compilation_info.compiler_working_dir_,
              ),
              filename,
          )
  
      else:
          relative_to = DirectoryOfThisScript()
          final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to)
  
      return {"flags": final_flags, "do_cache": True}
  