scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target
authorMichael Ellerman <mpe@ellerman.id.au>
Wed, 23 Sep 2015 05:40:34 +0000 (15:40 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 1 Oct 2015 06:52:03 +0000 (16:52 +1000)
commitd2036f30cfe1daa19e63ce75afd56c7ffd39ef3c
treef5ccd975122bc087f091835199c72ddfc3baf263
parent65d3223a853ac8598694064c1d37b0955e7d99cc
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>
scripts/kconfig/Makefile