Script to retrieve compilation flags according to YouCompleteMe.

getFlagsFromYcm.py

#!/usr/bin/env python


import sys
import os

ycmpath = os.path.expanduser("~/.vim/bundle/YouCompleteMe")

def main():
    sys.path.insert(0, os.path.join(ycmpath, 'third_party/ycmd'))
    sys.path.insert(0, os.path.join(ycmpath, 'third_party/ycmd/third_party/frozendict'))

    import ycmd.completers.cpp.flags
    import ycmd.user_options_store

    ycmd.user_options_store.SetAll({'global_ycm_extra_conf': os.path.expanduser('~/.ycm_extra_conf.py'), 'confirm_extra_conf':False})

    flagsObject = ycmd.completers.cpp.flags.Flags()
    result = flagsObject.FlagsForFile(sys.argv[1])

    output = ""
    for i in range(len(result)):
        output += " "+result[i]

    print output

if __name__ == "__main__":
    main()