tree 21c4e046aae50dc426c5fdbaebf11e84e021246c
parent 76e75522ed6f5c228d55587dee5a997893f6e474
author Lasse Collin <lasse.collin@tukaani.org> 1411659528 +0300
committer Lasse Collin <lasse.collin@tukaani.org> 1411659528 +0300

Build: Detect supported compiler warning flags better.

Clang and nowadays also GCC accept any -Wfoobar option
but then may give a warning that an unknown warning option
was specified. To avoid adding unsupported warning options,
the options are now tested with -Werror.

Thanks to Charles Diza.