Messages in this thread | | | Date | Tue, 14 Dec 2010 16:29:23 +0100 | From | Michal Marek <> | Subject | Re: [PATCH] kbuild: fix interaction of CONFIG_IKCONFIG and KCONFIG_CONFIG |
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On 26.11.2010 19:56, Ben Gardiner wrote: > Change the use of .config in kernel/Makefile to $(KCONFIG_CONFIG). > > Currently, if you try to build a kernel with KCONFIG_CONFIG set (to a value > not equal to .config) and the config file pointed to by KCONFIG_CONFIG sets > CONFIG_IKCONFIG then the build will fail with: > > make[1]: *** No rule to make target `.config', needed by `kernel/config_data.gz'. Stop. > > I think this has been present since the introduction of KCONFIG_CONFIG > in 14cdd3c402bf7c66f0bcd76e290f0770a54a4b21. > > Signed-off-by: Ben Gardiner<bengardiner@nanometrics.ca> > CC: Roman Zippel<zippel@linux-m68k.org> > CC: Michal Marek<mmarek@suse.cz> > > --- > based on 698fd6a2c3ca05ec796072defb5c415289a86cdc of > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git > > kernel/Makefile | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/kernel/Makefile b/kernel/Makefile > index 0b5ff08..33e0a39 100644 > --- a/kernel/Makefile > +++ b/kernel/Makefile > @@ -121,7 +121,7 @@ $(obj)/configs.o: $(obj)/config_data.h > # config_data.h contains the same information as ikconfig.h but gzipped. > # Info from config_data can be extracted from /proc/config* > targets += config_data.gz > -$(obj)/config_data.gz: .config FORCE > +$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE > $(call if_changed,gzip) > > quiet_cmd_ikconfiggz = IKCFG $@
The problem is that KCONFIG_CONFIG is not exported in the top-level Makefile. If you want to use it in other Makefiles, you need to add the export.
Michal
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