tree 5f2a76257041d9eb54b9f809af92475f053678fe
parent 01f039538ebf0a2f55a0a7cff9d44d4e7113e3a3
author Neels Hofmeyr <neels@hofmeyr.de> 1520279007 +0100
committer Neels Hofmeyr <neels@hofmeyr.de> 1520279007 +0100

configure: add --enable-werror

Provide a sane means of adding the -Werror compiler flag.

Currently, some of our jenkins.sh add -Werror by passing 'CFLAGS="-Werror"',
but that actually *overwrites* all the other CFLAGS we might want to have set.

Maintain these exceptions from -Werror:
a) deprecation (allow upstream to mark deprecation without breaking builds);
b) "#warning" pragmas (allow to remind ourselves of errors without breaking
   builds)

As a last configure step before generating the output files, print the complete
CFLAGS and CPPFLAGS by means of AC_MSG_RESULT.

Change-Id: Ia66aa48e957f4dcbdf8a7df3010b84f472c33f76