[tip:perf/urgent] perf tools: Allow to specify custom linker command

[tip-bot for Aaro Koskinen]

Commit-ID:  5ef7bbb09f7b91ef06524c72e1ab1fc48e0d6682
Gitweb:     http://git.kernel.org/tip/5ef7bbb09f7b91ef06524c72e1ab1fc48e0d6682
Author:     Aaro Koskinen <aaro.koskinen@xxxxxxxxx>
AuthorDate: Wed, 1 Jul 2015 14:54:43 +0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 1 Jul 2015 17:53:50 -0300

perf tools: Allow to specify custom linker command

Allow to specify custom linker command. This fixes MIPS64 builds for
64-bit userspace as it will allow to pass a linker using the correct
linker flags for 64-bit ABI (by default GNU binutils ld will assume
N32).

Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1435751683-18500-2-git-send-email-aaro.koskinen@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Makefile.perf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 0e0938a..7a4b549 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -110,7 +110,7 @@ $(OUTPUT)PERF-VERSION-FILE: ../../.git/HEAD
 	$(Q)touch $(OUTPUT)PERF-VERSION-FILE
 
 CC = $(CROSS_COMPILE)gcc
-LD = $(CROSS_COMPILE)ld
+LD ?= $(CROSS_COMPILE)ld
 AR = $(CROSS_COMPILE)ar
 PKG_CONFIG = $(CROSS_COMPILE)pkg-config
 
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