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AC_DEFUN([AC_FL_OPT], [
AC_ARG_ENABLE([optimizations],
AC_HELP_STRING([--enable-optimizations],
[use x86 optimizations (none|sse|sse2|sse3|native) @<:@none@:>@]),
[case "${enableval}" in
none|sse|sse2|sse3|native) ac_cv_opt="${enableval}" ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-optimizations]) ;;
esac],
[ac_cv_opt=none])
OPT_CFLAGS="-O2 -ffast-math -finline-functions -fomit-frame-pointer"
case "$ac_cv_opt" in
sse)
OPT_CFLAGS="$OPT_CFLAGS -msse -mfpmath=sse"
;;
sse2)
OPT_CFLAGS="$OPT_CFLAGS -msse2 -mfpmath=sse"
;;
sse3)
OPT_CFLAGS="$OPT_CFLAGS -msse3 -mfpmath=sse"
;;
native)
OPT_CFLAGS="$OPT_CFLAGS -march=native -mfpmath=sse"
;;
none)
;;
esac
AC_SUBST([OPT_CFLAGS])
])
|
