[tip:perf/scripting] perf trace/scripting: Silence PERL_EMBED_* backtick errors

[tip-bot for Tom Zanussi <tzanussi@gmail.com>]

Commit-ID:  f8be4231f82ab56a87ce74906671afbe1aa9ec75
Gitweb:     http://git.kernel.org/tip/f8be4231f82ab56a87ce74906671afbe1aa9ec75
Author:     Tom Zanussi <tzanussi@gmail.com>
AuthorDate: Mon, 30 Nov 2009 01:18:46 -0600
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Mon, 30 Nov 2009 09:03:59 +0100

perf trace/scripting: Silence PERL_EMBED_* backtick errors

The backtick shell substitutions for PERL_EMBED_LDOPT/CCOPT make
a lot of noise on stderr if Embed.pm isn't installed - this
silences them.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: anton@samba.org
Cc: hch@infradead.org
LKML-Reference: <1259565529-6407-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 tools/perf/Makefile |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 8ad57b5..d62a2d7 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -490,8 +490,8 @@ else
 	LIB_OBJS += util/probe-finder.o
 endif
 
-PERL_EMBED_LDOPTS = `perl -MExtUtils::Embed -e ldopts`
-PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts`
+PERL_EMBED_LDOPTS = `perl -MExtUtils::Embed -e ldopts 2>/dev/null`
+PERL_EMBED_CCOPTS = `perl -MExtUtils::Embed -e ccopts 2>/dev/null`
 
 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