+
+ AC_ARG_ENABLE(altivec,
+ AC_HELP_STRING([--enable-altivec],[enable altivec on PowerPC (yes)]),
+ [ if test $MD_CPU = powerpc; then
+ case "$enableval" in
+ (no) MD_CPU=generic ;;
+ (yes) _TRY_ADD_ALTIVEC ;;
+ (*) AC_MSG_ERROR([Invalid argument ($enableval) to --enable-altivec]) ;;
+ esac
+ fi],
+ [ if test $MD_CPU = powerpc; then _TRY_ADD_ALTIVEC fi])
+
+
+ AC_MSG_CHECKING([for machine dependent speedups])