YCM configuration for Android

ycm_extra_conf.py

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import os
import ycm_core

# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
'-Wall',
'-Wextra',
'-Wno-long-long',
'-Wno-variadic-macros',
'-fexceptions',
'-fno-rtti',
'-fno-strict-aliasing',
'-fPIE',
'-fpic',
'-DNDEBUG',
'-DANDROID',
#'-march=armv7-a',
'-DUSE_CLANG_COMPLETER',
# 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=c++11',
# ...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++'.
'-x', 'c++',
'-I', '.'
]

includedirs = [
'system/core/include',
'hardware/libhardware/include',
'hardware/libhardware_legacy/include',
'hardware/ril/include',
'libnativehelper/include',
'bionic/libc/arch-arm/include',
'bionic/libc/include',
'bionic/libc/kernel/common',
'bionic/libc/kernel/arch-arm',
'bionic/libstdc++/include',
'bionic/libstdc++/include',
'bionic/libm/include',
'bionic/libm/include/arm',
'bionic/libthread_db/include',
'frameworks/native/include',
'frameworks/native/opengl/include',
'frameworks/av/include',
'frameworks/base/include',
'kernel/include/uapi' 
#Add more header locations that you're interested in
]

def GetRoot(filename, marker_dir):
    path = os.path.dirname(os.path.abspath(filename))
    while True:
        if os.path.ismount(path):
            return None
        if os.path.isdir(os.path.join(path, marker_dir)):
            return path
        path = os.path.dirname(path)

def AppendIncludes(filename):
    root = GetRoot(filename, ".repo")
    for includedir in includedirs:
        flags.append('-isystem')
        flags.append(os.path.join(root, includedir))

# 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 = ''

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 list( 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 = MakeRelativePathsInFlagsAbsolute(
      compilation_info.compiler_flags_,
      compilation_info.compiler_working_dir_ )

    # NOTE: This is just for YouCompleteMe; it's highly likely that your project
    # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR
    # ycm_extra_conf IF YOU'RE NOT 100% YOU NEED IT.
    try:
      final_flags.remove( '-stdlib=libc++' )
    except ValueError:
      pass
  else:
    relative_to = DirectoryOfThisScript()
    AppendIncludes(filename)
    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {
    'flags': final_flags,
    'do_cache': True
  }

Hi, maybe there is a bug in the code
line94: if os.path.isdir(os.path.join(path, marker_dir)): shoule be if os.path.exists(os.path.join(path, marker_dir)):
for file "Kbuild" is a normal file, not a dir in kernel source