| import subprocess |
| |
| def getRoot(config): |
| if not config.parent: |
| return config |
| return getRoot(config.parent) |
| |
| |
| def is_gold_linker_available(): |
| |
| if not config.gold_executable: |
| return False |
| try: |
| ld_cmd = subprocess.Popen([config.gold_executable, '--help'], stdout = subprocess.PIPE) |
| ld_out = ld_cmd.stdout.read().decode() |
| ld_cmd.wait() |
| except: |
| return False |
| |
| if not '-plugin' in ld_out: |
| return False |
| |
| # config.clang is not guaranteed to be just the executable! |
| clang_cmd = subprocess.Popen(" ".join([config.clang, '-fuse-ld=gold', '-xc', '-']), |
| shell=True, |
| universal_newlines = True, |
| stdin = subprocess.PIPE, |
| stdout = subprocess.PIPE, |
| stderr = subprocess.PIPE) |
| clang_err = clang_cmd.communicate('int main() { return 0; }')[1] |
| |
| if not 'invalid linker' in clang_err: |
| return True |
| |
| return False |
| |
| root = getRoot(config) |
| |
| if root.host_os not in ['Linux'] or not is_gold_linker_available(): |
| config.unsupported = True |
