compiler-rt/test/profile/Linux/lit.local.cfg.py

   1 import subprocess
   2
   3 def getRoot(config):
   4   if not config.parent:
   5     return config
   6   return getRoot(config.parent)
   7
   8
   9 def is_gold_linker_available():
  10
  11   if not config.gold_executable:
  12     return False
  13   try:
  14     ld_cmd = subprocess.Popen([config.gold_executable, '--help'], stdout = subprocess.PIPE)
  15     ld_out = ld_cmd.stdout.read().decode()
  16     ld_cmd.wait()
  17   except:
  18     return False
  19
  20   if not '-plugin' in ld_out:
  21     return False
  22
  23   # config.clang is not guaranteed to be just the executable!
  24   clang_cmd = subprocess.Popen(" ".join([config.clang, '-fuse-ld=gold', '-xc', '-']),
  25                                shell=True,
  26                                universal_newlines = True,
  27                                stdin = subprocess.PIPE,
  28                                stdout = subprocess.PIPE,
  29                                stderr = subprocess.PIPE)
  30   clang_err = clang_cmd.communicate('int main() { return 0; }')[1]
  31
  32   if not 'invalid linker' in clang_err:
  33     return True
  34
  35   return False
  36
  37 root = getRoot(config)
  38
  39 if root.host_os not in ['Linux'] or not is_gold_linker_available():
  40   config.unsupported = True