[OpenSIPS-Devel] [OpenSIPS/opensips] 4e00d0: build system: Add special handling for gcc 7.2

[Liviu Chircu]

  Branch: refs/heads/2.3
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 4e00d0e61d6dd61fe65971107ad8fbe1754d2a9b
      https://github.com/OpenSIPS/opensips/commit/4e00d0e61d6dd61fe65971107ad8fbe1754d2a9b
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2018-10-16 (Tue, 16 Oct 2018)

  Changed paths:
    M Makefile.defs

  Log Message:
  -----------
  build system: Add special handling for gcc 7.2

It appears that gcc's "-dumpversion" behaves differently in 7.2
than in previous versions, due to "-dumpfullversion" being introduced.

$ gcc -dumpversion
7
$ gcc -dumpfullversion
7.2.0

This breaks compilation on systems such as Xubuntu 17.10 with:

Makefile.defs:930: You are using an old and unsupported gcc version
(7), compile at your own risk!

This backwards-incompatible change seems to have been reverted in 7.3+,
though, where the full version is once again being dumped:

$ gcc -dumpversion
7.3.0
$ gcc -dumpfullversion
7.3.0

(cherry picked from commit 79418dce9b14754bf15285b7d72b93513c5c93cd)



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