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dnl Copyright (C) 2005-2006 IOhannes m zmölnig
dnl This file is free software; IOhannes m zmölnig
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([IEM_CHECK_SIMD],
[
AC_ARG_ENABLE(simd,
[ --enable-simd=ARCHS
enable SIMD optimization;
valid arguments are: SSE2
],
[simd=$enableval], [simd=no])
if test "$simd" != no; then
AC_MSG_CHECKING([SIMD optimization])
# Respect SIMD given to --enable-simd if present.
if test "$simd" != yes; then
SIMD=`echo "$simd" | tr ',' ' '`
else
# Choose a default set of architectures based upon platform.
SIMD="SSE2"
fi
for smd in $SIMD
do
case "${smd}" in
SSE2|sse2)
AC_MSG_RESULT([SSE2])
IEM_CHECK_CFLAGS([-mfpmath=sse -msse])
IEM_CHECK_CXXFLAGS([-mfpmath=sse -msse])
;;
*)
AC_MSG_RESULT([unknown SIMD instructions: ${smd}])
;;
esac
done
fi
])# IEM_CHECK_SIMD
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