| #!/usr/bin/env python |
| """Calls `gn` with the right --dotfile= and --root= arguments for LLVM.""" |
| |
| # GN normally expects a file called '.gn' at the root of the repository. |
| # Since LLVM's GN build isn't supported, putting that file at the root |
| # is deemed inappropriate, which requires passing --dotfile= and -root= to GN. |
| # Since that gets old fast, this script automatically passes these arguments. |
| |
| import os |
| import subprocess |
| import sys |
| |
| |
| THIS_DIR = os.path.dirname(__file__) |
| ROOT_DIR = os.path.join(THIS_DIR, '..', '..', '..') |
| |
| |
| def main(): |
| # Find real gn executable. For now, just assume it's on PATH. |
| # FIXME: Probably need to append '.exe' on Windows. |
| gn = 'gn' |
| |
| # Compute --dotfile= and --root= args to add. |
| extra_args = [] |
| gn_main_arg = next((x for x in sys.argv[1:] if not x.startswith('-')), None) |
| if gn_main_arg != 'help': # `gn help` gets confused by the switches. |
| cwd = os.getcwd() |
| dotfile = os.path.relpath(os.path.join(THIS_DIR, '.gn'), cwd) |
| root = os.path.relpath(ROOT_DIR, cwd) |
| extra_args = [ '--dotfile=' + dotfile, '--root=' + root ] |
| |
| # Run GN command with --dotfile= and --root= added. |
| cmd = [gn] + extra_args + sys.argv[1:] |
| sys.exit(subprocess.call(cmd)) |
| |
| |
| if __name__ == '__main__': |
| main() |