mesa: Remove C++11 narrowing warnings
Add -Wno-narrowing to CXXFLAGS for gcc. It is safe to add this flag even for versions of gcc that don't recognize it. From the GCC Manual [1]: "[GCC] allows the use of new -Wno- options with old compilers". This removes warnings of the form warning: narrowing conversion of X from 'int' to 'float' inside { } is ill-formed in C++11 [-Wnarrowing] in ff_fragment_shader.cpp and gen6_blorp.cpp of the form. When building i965, I observed no other difference in the build output. [1] http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
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@ -228,6 +228,9 @@ if test "x$GXX" = xyes; then
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# gcc's builtin memcmp is slower than glibc's
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# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052
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CXXFLAGS="$CXXFLAGS -fno-builtin-memcmp"
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# Silence C++11 warnings that we don't care about.
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CXXFLAGS="$CXXFLAGS -Wno-narrowing"
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fi
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dnl even if the compiler appears to support it, using visibility attributes isn't
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