[build] Make version.o depend on the git index

The version number string is currently updated only if version.o happens to be rebuilt due to changes in its dependencies. Add a dependency upon the git index, so that the version number is updated after any checkout. Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
ipxe · Nov 2, 2012 · f68b406 · f68b406
1 parent 4867085
commit f68b406
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping
@@ -659,6 +659,10 @@ CFLAGS_version += -DVERSION_MAJOR=$(VERSION_MAJOR) \
 		  -DVERSION_MINOR=$(VERSION_MINOR) \
 		  -DVERSION_PATCH=$(VERSION_PATCH) \
 		  -DVERSION="\"$(VERSION)\""
+# Make sure the version number gets updated on every git checkout
+ifneq ($(GITVERSION),)
+$(BIN)/version.o : ../.git/index
+endif
 
 # We automatically generate rules for any file mentioned in AUTO_SRCS
 # using the following set of templates.  It would be cleaner to use