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authorMichael Ellerman <mpe@ellerman.id.au>2015-09-23 15:40:34 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2015-10-01 16:52:03 +1000
commitd2036f30cfe1daa19e63ce75afd56c7ffd39ef3c (patch)
treef5ccd975122bc087f091835199c72ddfc3baf263 /scripts/kconfig
parent65d3223a853ac8598694064c1d37b0955e7d99cc (diff)
downloadop-kernel-dev-d2036f30cfe1daa19e63ce75afd56c7ffd39ef3c.zip
op-kernel-dev-d2036f30cfe1daa19e63ce75afd56c7ffd39ef3c.tar.gz
scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target
Arch Makefiles can set KBUILD_DEFCONFIG to tell kbuild the name of the defconfig that should be built by default. However currently there is an assumption that KBUILD_DEFCONFIG points to a file at arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG). We would like to use a target, using merge_config, as our defconfig, so adapt the logic in scripts/kconfig/Makefile to allow that. To minimise the chance of breaking anything, we first check if KBUILD_DEFCONFIG is a file, and if so we do the old logic. If it's not a file, then we call the top-level Makefile with KBUILD_DEFCONFIG as the target. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'scripts/kconfig')
-rw-r--r--scripts/kconfig/Makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index aceaaed..b2b9c87 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -96,9 +96,12 @@ savedefconfig: $(obj)/conf
defconfig: $(obj)/conf
ifeq ($(KBUILD_DEFCONFIG),)
$< $(silent) --defconfig $(Kconfig)
-else
+else ifneq ($(wildcard arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
+else
+ @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
+ $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
endif
%_defconfig: $(obj)/conf
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