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Diffstat (limited to 'config.mk.in')
| -rw-r--r-- | config.mk.in | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/config.mk.in b/config.mk.in index 3873ba19..9197e956 100644 --- a/config.mk.in +++ b/config.mk.in @@ -89,6 +89,14 @@ INTTYPES_H = <inttypes.h> HAVE_INT64 = Y #HAVE_INT64 = N +# WANT_MMX tells whether the build should use MMX instructions, via the the +# standard MMX intrinsics (operators such as '_mm_movemask_epi8'). MMX +# instructions are faster than traditional instructions, but aren't available +# on all CPUs. Also, the standard intrinsics are not available in all +# compilers. +WANT_MMX = N +#WANT_MMX = Y + # CC and LD are for building the Netpbm programs, which are not necessarily # intended to run on the same system on which Make is running. But when we # build a build tool such as Libopt, it is meant to run only on the same |