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only update version header as needed

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Constantly rebuilding the version header will force useless relinking, so we
simply need to compare the new header with the existing one before updating
it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2008-02-04 17:44:23 -05:00 committed by Wolfgang Denk
parent 208447f8e9
commit 0ec7a061fb
1 changed files with 2 additions and 1 deletions
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3
Makefile
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@ -343,7 +343,8 @@ $(VERSION_FILE):
echo -n "$(U_BOOT_VERSION)" ; \
echo -n $(shell $(CONFIG_SHELL) $(TOPDIR)/tools/setlocalversion \
$(TOPDIR)) ; \
echo "\"" ) > $(VERSION_FILE)
echo "\"" ) > $@.tmp
@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
gdbtools:
$(MAKE) -C tools/gdb all || exit 1