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| author | Rodrigo Arias Mallo <rodarima@gmail.com> | 2024-12-11 22:55:28 +0100 |
|---|---|---|
| committer | Rodrigo Arias Mallo <rodarima@gmail.com> | 2024-12-11 22:55:28 +0100 |
| commit | c04640262ac7f4afa19f750744a5e3aff0071d5f (patch) | |
| tree | 86354cd9f1e2bc613c794f95120aeafbd593ad83 | |
| parent | 07dd1aba3284761c20d9c87a81967c84c8a98cf2 (diff) | |
Avoid rebuild when the git commit is the same
Compare the commit used in the last rebuild to determine if it has
changed, rather than using a phony target which always causes a rebuild.
| -rw-r--r-- | src/Makefile.am | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index c0205f7d..9943b088 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -144,10 +144,14 @@ dillo.$(OBJEXT): commit.h CLEANFILES = commit.h if GIT_AVAILABLE -# Always rebuild -.PHONY: commit.h -commit.h: - printf '#define GIT_COMMIT "%s"\n' `git --work-tree="$(top_srcdir)" describe --dirty` > commit.h +# Rebuild commit.tmp.h every time, but only change commit.h +# if the version is different to avoid rebuilds. +commit.h: commit.tmp.h + test -f $@ || (echo "" > $@) + if diff $@ $^ >/dev/null; then rm $^; else mv $^ $@; fi + +commit.tmp.h: + printf '#define GIT_COMMIT "%s"\n' `git --work-tree="$(top_srcdir)" describe --dirty` > $@ else # No need to rebuild commit.h: |