diff options
Diffstat (limited to 'mesalib/bin/extract_git_sha1')
| -rw-r--r-- | mesalib/bin/extract_git_sha1 | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/mesalib/bin/extract_git_sha1 b/mesalib/bin/extract_git_sha1 index cf3006f8f..c2994ff09 100644 --- a/mesalib/bin/extract_git_sha1 +++ b/mesalib/bin/extract_git_sha1 @@ -1,10 +1,20 @@ #!/bin/sh
-touch src/mesa/main/git_sha1.h
+if [ ! -f src/mesa/main/git_sha1.h ]; then
+ touch src/mesa/main/git_sha1.h
+fi
+
+if [ ! -d .git ]; then
+ exit
+fi
+
if which git > /dev/null; then
# Extract the 7-digit "short" SHA1 for the current HEAD, convert
# it to a string, and wrap it in a #define. This is used in
# src/mesa/main/version.c to put the GIT SHA1 in the GL_VERSION string.
git log -n 1 --oneline |\
sed 's/^\([^ ]*\) .*/#define MESA_GIT_SHA1 "git-\1"/' \
- > src/mesa/main/git_sha1.h
+ > src/mesa/main/git_sha1.h.tmp
+ if ! cmp -s src/mesa/main/git_sha1.h.tmp src/mesa/main/git_sha1.h; then
+ mv src/mesa/main/git_sha1.h.tmp src/mesa/main/git_sha1.h
+ fi
fi
|