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configure: Add a --disable-version-tracking option

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This disables regenerating ffversion.h whenever the checked out
git commit changes, speeding up development rebuilds.

Whenever this option is set, force the version to be printed as
"unknown" rather than showing potentially stale information.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2023-12-15 13:03:49 +02:00
parent 9415c2c11f
commit 1e42a48e37
2 changed files with 10 additions and 1 deletions
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7
Makefile
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@@ -133,13 +133,18 @@ endif
$(LD) $(LDFLAGS) $(LDEXEFLAGS) $(LD_O) $(OBJS-$*) $(FF_EXTRALIBS)
VERSION_SH = $(SRC_PATH)/ffbuild/version.sh
ifeq ($(VERSION_TRACKING),yes)
GIT_LOG = $(SRC_PATH)/.git/logs/HEAD
endif
.version: $(wildcard $(GIT_LOG)) $(VERSION_SH) ffbuild/config.mak
.version: M=@
ifneq ($(VERSION_TRACKING),yes)
libavutil/ffversion.h .version: REVISION=unknown
endif
libavutil/ffversion.h .version:
$(M)$(VERSION_SH) $(SRC_PATH) libavutil/ffversion.h $(EXTRA_VERSION)
$(M)revision=$(REVISION) $(VERSION_SH) $(SRC_PATH) libavutil/ffversion.h $(EXTRA_VERSION)
$(Q)touch .version
# force version.sh to run whenever version might have changed