linux-kernel - [PATCH] ver_linux: make.patch

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Message-ID: <CAJ1xhMWij3Vfnua9GTTmK_q7e_FpYSJtp4ia=AW3nZ4hHhW-BA@mail.gmail.com>
Date:	Thu, 1 Oct 2015 21:31:32 +0300
From:	Alexander Kapshuk <alexander.kapshuk@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH] ver_linux: make.patch

Calling 'awk' more then once is redundant. The output of 'make --version'
already has the data we are after, why not utilise it.

The proposed implementation uses 'sed' to utilise the data output
modifying the white space formatting only.


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    2015-08-30 21:34:09.000000000 +0300
+++ linux/scripts/ver_linux    2015-09-30 22:31:54.479651499 +0300
@@ -14,8 +14,11 @@
 gcc -dumpversion 2>&1| awk \
 'NR==1{print "Gnu C                 ", $1}'

-make --version 2>&1 | awk -F, '{print $1}' | awk \
-      '/GNU Make/{print "Gnu make              ",$NF}'
+make --version 2>&1 |
+sed '
+    /^\(GNU Make\)[ \t]/!d
+    s//\1\t\t/
+'

 echo "binutils               $(ld -v | egrep -o '[0-9]+\.[0-9\.]+')"
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