Messages in this thread | | | Date | Thu, 14 Jul 2011 22:52:46 -0400 (EDT) | From | Peter Foley <> | Subject | Re: [PATCH] kernel: prevent unnecessary rebuilding due to config_data.gz |
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On Wed, 6 Jul 2011, Randy Dunlap wrote:
> On Tue, 05 Jul 2011 19:42:18 -0400 (EDT) Peter Foley wrote: > > > When IKCONFIG is built-in make oldconfig will cause the kernel to be > > relinked even if .config didn't change. This happens because of a > > config_data.gz dependency on .config. This patch changes the if_changed to > > a filechk so that config_data.h is only rebuilt when the contents > > have actually changed. > > > > Signed-off-by: Peter Foley <pefoley2@verizon.net> > > Michal, > If this looks OK to you, please merge it. > > Thanks. > > > --- > > kernel/Makefile | 5 ++--- > > 1 files changed, 2 insertions(+), 3 deletions(-) > > > > diff --git a/kernel/Makefile b/kernel/Makefile > > index 2d64cfc..d06467f 100644 > > --- a/kernel/Makefile > > +++ b/kernel/Makefile > > @@ -125,11 +125,10 @@ targets += config_data.gz > > $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE > > $(call if_changed,gzip) > > > > -quiet_cmd_ikconfiggz = IKCFG $@ > > - cmd_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@ > > + filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > > targets += config_data.h > > $(obj)/config_data.h: $(obj)/config_data.gz FORCE > > - $(call if_changed,ikconfiggz) > > + $(call filechk,ikconfiggz) > > > > $(obj)/time.o: $(obj)/timeconst.h > > > > -- > > > --- > ~Randy > *** Remember to use Documentation/SubmitChecklist when testing your code *** >
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