linux-kernel - [PATCH 2/2] perf tools: allow cross compiling

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Date:	Fri, 11 Dec 2009 09:21:00 +0000
From:	Jamie Iles <jamie.iles@...ochip.com>
To:	linux-kernel@...r.kernel.org
Cc:	Jamie Iles <jamie.iles@...ochip.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 2/2] perf tools: allow cross compiling

For embedded platforms, we want to be able to build the perf
tools on a build machine to run on a different arch. This patch
allows $CROSS_COMPILE to set the cross compiler. Additionally, if
NO_LIBPERL is set, then don't use perl include paths as they will
be for the host arch.

Signed-off-by: Jamie Iles <jamie.iles@...ochip.com>
CC: Peter Zijlstra <peterz@...radead.org>
---
 tools/perf/Makefile |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 23ec660..e2ee3b5 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -237,8 +237,8 @@ lib = lib
 
 export prefix bindir sharedir sysconfdir
 
-CC = gcc
-AR = ar
+CC = $(CROSS_COMPILE)gcc
+AR = $(CROSS_COMPILE)ar
 RM = rm -f
 TAR = tar
 FIND = find
@@ -492,8 +492,10 @@ else
 	LIB_OBJS += util/probe-finder.o
 endif
 
+ifndef NO_LIBPERL
 PERL_EMBED_LDOPTS = `perl -MExtUtils::Embed -e ldopts 2>/dev/null`
 PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
+endif
 
 ifneq ($(shell sh -c "(echo '\#include <EXTERN.h>'; echo '\#include <perl.h>'; echo 'int main(void) { perl_alloc(); return 0; }') | $(CC) -x c - $(PERL_EMBED_CCOPTS) -o /dev/null $(PERL_EMBED_LDOPTS) > /dev/null 2>&1 && echo y"), y)
 	BASIC_CFLAGS += -DNO_LIBPERL
-- 
1.6.5.4

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