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import itertools
import os
import subprocess
def GetFlagsFromMakefile(varname):
return subprocess.check_output([
"make", "-s", "print-%s" % varname]).decode().split()
def Flatten(lists):
return list(itertools.chain.from_iterable(lists))
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):
relative_to = DirectoryOfThisScript()
return {
'flags': MakeRelativePathsInFlagsAbsolute(flags, relative_to),
'do_cache': True
}
flags = Flatten(map(GetFlagsFromMakefile, [
'AM_CPPFLAGS',
'CPPFLAGS',
'AM_CFLAGS',
'CFLAGS',
]))
# these flags cause crashes in libclang, so remove them
flags.remove('-Wlogical-op')
flags.remove('-Wsuggest-attribute=noreturn')
flags.remove('-Wdate-time')
# vim: set et ts=2 sw=2:
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