The fix for bug 4414 solves problems with gcc adding MMX/SSE instructions to generic code that targets pre-MMX CPUs. Unfortunately, the MMX_CFLAGS are applied to all files in fb/ and not just to the MMX files. This should be fixed in fb/Makefile.am
Fixed in bed3235d222fd6e2207f6c0d551c67d5a53322cd.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.