bin/git_sha1_gen.py

   1 #!/usr/bin/env python
   2
   3 """
   4 Generate the contents of the git_sha1.h file.
   5 The output of this script goes to stdout.
   6 """
   7
   8
   9 import os
  10 import os.path
  11 import subprocess
  12 import sys
  13
  14
  15 def get_git_sha1():
  16     """Try to get the git SHA1 with git rev-parse."""
  17     git_dir = os.path.join(os.path.dirname(sys.argv[0]), '..', '.git')
  18     try:
  19         git_sha1 = subprocess.check_output([
  20             'git',
  21             '--git-dir=' + git_dir,
  22             'rev-parse',
  23             'HEAD',
  24         ], stderr=open(os.devnull, 'w')).decode("ascii")
  25     except:
  26         # don't print anything if it fails
  27         git_sha1 = ''
  28     return git_sha1
  29
  30
  31 git_sha1 = os.environ.get('MESA_GIT_SHA1_OVERRIDE', get_git_sha1())[:10]
  32 if git_sha1:
  33     sys.stdout.write('#define MESA_GIT_SHA1 "git-%s"\n' % git_sha1.rstrip())