AX_EXT
Find supported SIMD extensions by requesting cpuid. When an SIMD extension is found, the -m"simdextensionname" is added to SIMD_FLAGS (only if compilator support it) (ie : if "sse2" is available "-msse2" is added to SIMD_FLAGS)
This macro calls:
AC_SUBST(SIMD_FLAGS)
And defines:
HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3
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Copyright © 2008 Christophe Tournayre turn3r@users.sourceforge.net
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