linux-kernel - [PATCH 3/24] ver

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Date:	Sat, 3 Oct 2015 16:07:33 +0300
From:	Alexander Kapshuk <alexander.kapshuk@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH 3/24] ver_linux: gcc.patch

Using 'awk' here is a bit of an overkill. Should the output of 'gcc
-dumpversion' vary on another disto, or change overtime, it may no longer
be available at field 1, as relied on by the current implementation.
I believe 'sed' offers greater flexibility here in terms of processing
varying output as well as being more light-weight.

Tested on:
Gentoo Linux
Debian 6.0.10
Oracle Linux Server release 7.1
Arch Linux
openSuSE 13.2

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@...il.com>
---
--- linux/scripts/ver_linux.orig    2015-10-03 13:41:57.118790241 +0300
+++ linux/scripts/ver_linux    2015-10-03 13:48:49.277622632 +0300
@@ -11,8 +11,12 @@
 uname -a
 echo ' '

-gcc -dumpversion 2>&1| awk \
-'NR==1{print "Gnu C                 ", $1}'
+test -x "$gcc" &&
+$gcc -dumpversion 2>&1 |
+sed '
+    /^[0-9\.]*$/!d
+    s/^/GNU C\t\t\t/
+'

 make --version 2>&1 | awk -F, '{print $1}' | awk \
       '/GNU Make/{print "Gnu make              ",$NF}'
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