commit: 58d406ed6a5f1ca4bc1dba5390b718c67847fa5f
From: Josh Hunt <[email protected]>
Date: Tue, 15 Mar 2011 19:16:40 -0700
Subject: [PATCH] perf tools: Version incorrect with some versions of grep

Some versions of grep don't treat '\s' properly. When building perf on such
systems and using a kernel tarball the perf version is unable to be determined
from the main kernel Makefile and the user is left with a version of '..'.
Replacing the use of '\s' with '[[:space:]]', which should work in all grep
versions, gives a usable version number.

Reported-by: Tapan Dhimant <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Tapan Dhimant <[email protected]>
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Josh Hunt <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/util/PERF-VERSION-GEN |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/PERF-VERSION-GEN b/tools/perf/util/PERF-VERSION-GEN
index 97d7656..26d4d3f 100755
--- a/tools/perf/util/PERF-VERSION-GEN
+++ b/tools/perf/util/PERF-VERSION-GEN
@@ -23,10 +23,10 @@ if test -d ../../.git -o -f ../../.git &&
 then
        VN=$(echo "$VN" | sed -e 's/-/./g');
 else
-       eval `grep '^VERSION\s*=' ../../Makefile|tr -d ' '`
-       eval `grep '^PATCHLEVEL\s*=' ../../Makefile|tr -d ' '`
-       eval `grep '^SUBLEVEL\s*=' ../../Makefile|tr -d ' '`
-       eval `grep '^EXTRAVERSION\s*=' ../../Makefile|tr -d ' '`
+       eval $(grep '^VERSION[[:space:]]*=' ../../Makefile|tr -d ' ')
+       eval $(grep '^PATCHLEVEL[[:space:]]*=' ../../Makefile|tr -d ' ')
+       eval $(grep '^SUBLEVEL[[:space:]]*=' ../../Makefile|tr -d ' ')
+       eval $(grep '^EXTRAVERSION[[:space:]]*=' ../../Makefile|tr -d ' ')
 
        VN="${VERSION}.${PATCHLEVEL}.${SUBLEVEL}${EXTRAVERSION}"
 fi

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