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* Use latest warnings.m4 from gnulibChristophe Fergeau2013-10-101-20/+62
| | | | | | The one we were using does not work properly with clang, causing the build process to try to use -f/-W options that are not supported by clang.
* Import GNULIB's GCC warning macrosDaniel P. Berrange2012-03-131-0/+37
GNULIB has a helpful module 'manywarnings' which makes it easy to turn on every single GCC warning. The general goal is that every possible GCC warning should be enabled, except for certain blacklisted warnings. This imports the GNULIB m4 macros, and updates configure.ac to use this new capability. As & when new GCC warnings are created, the 'manywarnings.m4' can be refreshed from upstream GNULIB * m4/manywarnings.m4, m4/warnings.m4: GNULIB warning macros * configure.ac: Remove custom compiler warning checks * m4/spice-compile-warnings.m4: Decide what GCC warnings to enable