automake: move the git_sha1.h rule a level up
This way we can reuse the header from other places like -
src/intel/vulkan and src/gallium. Only the former is hooked up atm.
Make sure .gitignore is updated, as well as all the users (the mesa
code does not need any changes).
Also ensure that the file is always created by adding it to the
BUILT_SOURCES target.
Cc: Jason Ekstrand <jason.ekstrand@intel.com>
Cc: Kristian Høgsberg Kristensen <krh@bitplanet.net>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index 6ce5791..d142aea 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -19,6 +19,31 @@
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
+.PHONY: git_sha1.h.tmp
+git_sha1.h.tmp:
+ @# Don't assume that $(top_srcdir)/.git is a directory. It may be
+ @# a gitlink file if $(top_srcdir) is a submodule checkout or a linked
+ @# worktree.
+ @touch git_sha1.h.tmp
+ @if test -e $(top_srcdir)/.git; then \
+ if which git > /dev/null; then \
+ git --git-dir=$(top_srcdir)/.git log -n 1 --oneline | \
+ sed 's/^\([^ ]*\) .*/#define MESA_GIT_SHA1 "git-\1"/' \
+ > git_sha1.h.tmp ; \
+ fi \
+ fi
+
+git_sha1.h: git_sha1.h.tmp
+ @echo "updating git_sha1.h"
+ @if ! cmp -s git_sha1.h.tmp git_sha1.h; then \
+ mv git_sha1.h.tmp git_sha1.h ;\
+ else \
+ rm git_sha1.h.tmp ;\
+ fi
+
+BUILT_SOURCES = git_sha1.h
+CLEANFILES = $(BUILT_SOURCES)
+
SUBDIRS = . gtest util mapi/glapi/gen mapi
# include only conditionally ?