Re: [PATCH] ld-version: Fix awk regex compile failure

From: Sudip Mukherjee
Date: Thu Mar 10 2016 - 12:50:22 EST

On Tuesday 08 March 2016 10:17 PM, James Hogan wrote:
The script fails on some versions of awk with the
following error, resulting in build failures for MIPS:

awk: scripts/ line 4: regular expression compile failed (missing '(')

This is due to the regular expression ".*)", meant to strip off the
beginning of the ld version string up to the close bracket, however
brackets have a meaning in regular expressions, so lets escape it so
that awk doesn't expect a corresponding open bracket.

Fixes: ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion ...")
Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>

This error was only coming in my gitlab builds but was not showing in the build of travis-ci. Maybe it depends on the version of awk also.
Build log at:

Tested-by: Sudip Mukherjee <sudip.mukherjee@xxxxxxxxxxxxxxx>