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Makefile: Update unmodified config-devices.mak automatically

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This makes rebuilds after source updates easier
for most users (who don't edit config-devices.mak).

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Weil 2009-12-20 15:39:03 +01:00 committed by Anthony Liguori
parent 076d247142
commit 012f087923
1 changed files with 15 additions and 5 deletions
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20
Makefile
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@ -42,12 +42,22 @@ config-all-devices.mak: $(SUBDIR_DEVICES_MAK)
%/config-devices.mak: default-configs/%.mak
$(call quiet-command,cat $< > $@.tmp, " GEN $@")
@if test -f $@ ; then \
echo "WARNING: $@ out of date." ;\
echo "Run \"make defconfig\" to regenerate." ; \
rm $@.tmp ; \
@if test -f $@; then \
if cmp -s $@.old $@ || cmp -s $@ $@.tmp; then \
mv $@.tmp $@; \
cp -p $@ $@.old; \
else \
if test -f $@.old; then \
echo "WARNING: $@ (user modified) out of date.";\
else \
echo "WARNING: $@ out of date.";\
fi; \
echo "Run \"make defconfig\" to regenerate."; \
rm $@.tmp; \
fi; \
else \
mv $@.tmp $@ ; \
mv $@.tmp $@; \
cp -p $@ $@.old; \
fi
defconfig: