linux-kernel - [RFC] perf build: Add EXTRA

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Date:	Tue, 9 Feb 2016 13:33:38 +0000
From:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To:	<peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>
CC:	<linux-kernel@...r.kernel.org>, <Zubair.Kakakhel@...tec.com>
Subject: [RFC] perf build: Add EXTRA_LDFLAGS option to makefile

To compile for little-endian systems, you need to pass -EL to CC
and LD.

EXTRA_CFLAGS works to pass -EL to CC.
Add EXTRA_LDFLAGS to pass -EL to LD.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>

---
There might be a better way to add EXTRA_LDFLAGS to the makefile?

Can compile for little endian now using
make ARCH=mips CROSS_COMPILE=mips-mti-linux-gnu- EXTRA_CFLAGS=-EL
EXTRA_LDFLAGS=-EL

Based on v4.5-rc3
---
 tools/perf/Makefile.perf | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 5d34815..617acc1 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -136,6 +136,8 @@ $(call allow-override,CC,$(CROSS_COMPILE)gcc)
 $(call allow-override,AR,$(CROSS_COMPILE)ar)
 $(call allow-override,LD,$(CROSS_COMPILE)ld)
 
+LD += $(EXTRA_LDFLAGS)
+
 PKG_CONFIG = $(CROSS_COMPILE)pkg-config
 
 RM      = rm -f
-- 
1.9.1