mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2024-11-24 02:34:17 +08:00
c51e7486d9
The script is executed explicitly via the build system, that uses PYTHON/prog_python and equivalent. Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
"""
|
|
Generate the contents of the git_sha1.h file.
|
|
The output of this script goes to stdout.
|
|
"""
|
|
|
|
|
|
import argparse
|
|
import os
|
|
import os.path
|
|
import subprocess
|
|
import sys
|
|
|
|
|
|
def get_git_sha1():
|
|
"""Try to get the git SHA1 with git rev-parse."""
|
|
git_dir = os.path.join(os.path.dirname(sys.argv[0]), '..', '.git')
|
|
try:
|
|
git_sha1 = subprocess.check_output([
|
|
'git',
|
|
'--git-dir=' + git_dir,
|
|
'rev-parse',
|
|
'HEAD',
|
|
], stderr=open(os.devnull, 'w')).decode("ascii")
|
|
except:
|
|
# don't print anything if it fails
|
|
git_sha1 = ''
|
|
return git_sha1
|
|
|
|
def write_if_different(contents):
|
|
"""
|
|
Avoid touching the output file if it doesn't need modifications
|
|
Useful to avoid triggering rebuilds when nothing has changed.
|
|
"""
|
|
if os.path.isfile(args.output):
|
|
with open(args.output, 'r') as file:
|
|
if file.read() == contents:
|
|
return
|
|
with open(args.output, 'w') as file:
|
|
file.write(contents)
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('--output', help='File to write the #define in',
|
|
required=True)
|
|
args = parser.parse_args()
|
|
|
|
git_sha1 = os.environ.get('MESA_GIT_SHA1_OVERRIDE', get_git_sha1())[:10]
|
|
if git_sha1:
|
|
write_if_different('#define MESA_GIT_SHA1 " (git-' + git_sha1 + ')"')
|
|
else:
|
|
write_if_different('#define MESA_GIT_SHA1 ""')
|