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tools lib lk: Fix for cross build

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Currently, lib lk doesn't use CROSS_COMPILE environment variable, so
cross build always fails.

This is a quick fix for this problem.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1371603750-15053-2-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Joonsoo Kim
2013-06-19 10:02:29 +09:00
committed by Arnaldo Carvalho de Melo
parent 756bbc84e3
commit 079787f209
1 changed files with 15 additions and 0 deletions
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15
tools/lib/lk/Makefile
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@@ -3,6 +3,21 @@ include ../../scripts/Makefile.include
CC = $(CROSS_COMPILE)gcc CC = $(CROSS_COMPILE)gcc
AR = $(CROSS_COMPILE)ar AR = $(CROSS_COMPILE)ar
# Makefiles suck: This macro sets a default value of $(2) for the
# variable named by $(1), unless the variable has been set by
# environment or command line. This is necessary for CC and AR
# because make sets default values, so the simpler ?= approach
# won't work as expected.
define allow-override
$(if $(or $(findstring environment,$(origin $(1))),\
$(findstring command line,$(origin $(1)))),,\
$(eval $(1) = $(2)))
endef
# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,AR,$(CROSS_COMPILE)ar)
# guard against environment variables # guard against environment variables
LIB_H= LIB_H=
LIB_OBJS= LIB_OBJS=