[OpenSIPS-Devel] [OpenSIPS/opensips] faa9f7: Makefile: Fix detection for gcc 11 and higher

[Liviu Chircu]

  Branch: refs/heads/3.1
  Home:   https://github.com/OpenSIPS/opensips
  Commit: faa9f75f4ee899c5a32197c218583c80e225e8f0
      https://github.com/OpenSIPS/opensips/commit/faa9f75f4ee899c5a32197c218583c80e225e8f0
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2022-05-04 (Wed, 04 May 2022)

  Changed paths:
    M Makefile.defs

  Log Message:
  -----------
  Makefile: Fix detection for gcc 11 and higher

Context: newer OS'es, e.g. Ubuntu 22.04, ship with gcc 11 nowadays.
(cherry picked from commit 7273a3f13a8bb29a4b4da529c2e8c9bc2cc45492)