-dnl
-dnl Special arch tuning
-dnl
-AC_ARG_WITH(tuning,
- [AS_HELP_STRING([--with-tuning=ARCH],
- [tune compilation for an architecture (default varies)])])
-if test -n "${with_tuning}"; then
- if test "${with_tuning}" != "no"; then
- CFLAGS_TUNING="-mtune=${with_tuning}"
- fi
-else
- if test "${SYS}" = "darwin" -a "${host_cpu}" = "i686"; then
- CFLAGS_TUNING="-march=prescott -mtune=generic"
- elif test "${SYS}" = "darwin" -a "${host_cpu}" = "x86_64"; then
- CFLAGS_TUNING="-march=core2 -mtune=core2"
- elif test "${host_cpu}" = "i686" -o "${host_cpu}" = "i586" -o "${host_cpu}" = "i486" -o "${host_cpu}" = "i386"; then
- CFLAGS_TUNING="-mtune=pentium2"
- elif test "${host_cpu}" = "x86_64"; then
- CFLAGS_TUNING="-mtune=athlon64"
- elif test "${host_cpu}" = "powerpc"; then
- CFLAGS_TUNING="-mtune=G4";
- fi
-fi
-
-dnl NOTE: this can't be cached cleanly
-AS_IF([test -n "${CFLAGS_TUNING}"], [
- VLC_SAVE_FLAGS
- CFLAGS="${CFLAGS} ${CFLAGS_TUNING}"
- AC_MSG_CHECKING([whether $CC accepts ${CFLAGS_TUNING}])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], [
- AC_MSG_RESULT([yes])
- ], [
- VLC_RESTORE_FLAGS
- AC_MSG_RESULT([no])
- AS_IF([test "${with_tuning}"], [AC_MSG_ERROR([requested tuning not supported])])
- ])
-])
-