update include/version.h only when content changes

3 years ago · 8afaedda37
1 changed files with 8 additions and 2 deletions
--- a/src/Makefile
+++ b/src/Makefile
@ -162,7 +162,13 @@ all_platforms:
 command.c: include/version.h
 GIT_VERSION := $(shell git describe --always --dirty --tags)
 VERSION_HEADER := \#define FIRMWARE_VERSION "$(GIT_VERSION)"
 include/version.h: FORCE
-	$(Q)echo " GIT include/version.h"
+ifneq ($(file <include/version.h), $(VERSION_HEADER))
-	$(Q)echo "#define FIRMWARE_VERSION \"$(shell git describe --always --dirty --tags)\"" > $@
+	@echo " GEN GIT  $@"
 	$(Q)$(file >$@,$(VERSION_HEADER))
 endif
 -include *.d