| ;; |
;; |
| i386) |
i386) |
| machine=386 |
machine=386 |
| CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem" |
CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr" |
| ;; |
;; |
| i486) |
i486) |
| machine=386 |
machine=386 |
| CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486" |
CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486" |
| ;; |
;; |
| i*86) |
i*86) |
| machine=386 |
machine=386 |
| CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem" |
CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr" |
| CFLAGS_1="$CFLAGS" |
CFLAGS_1="$CFLAGS" |
| CFLAGS="$CFLAGS -march=pentium" |
CFLAGS="$CFLAGS -march=pentium" |
| AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486") |
AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486") |
| CFLAGS="$CFLAGS_1" |
CFLAGS="$CFLAGS_1" |
| AC_MSG_RESULT($ac_noreorder_blocks) |
AC_MSG_RESULT($ac_noreorder_blocks) |
| |
|
| |
# Try if GCC understands -falign-labels=1 |
| |
AC_MSG_CHECKING([if $CC understands -falign-labels=1]) |
| |
CFLAGS_1="$CFLAGS" |
| |
CFLAGS="$CFLAGS -falign-labels=1" |
| |
AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no) |
| |
CFLAGS="$CFLAGS_1" |
| |
AC_MSG_RESULT($ac_align_labels) |
| |
|
| # Try if GCC understands __attribute__((unused)) |
# Try if GCC understands __attribute__((unused)) |
| AC_MSG_CHECKING([how to suppress 'unused variable' warnings]) |
AC_MSG_CHECKING([how to suppress 'unused variable' warnings]) |
| AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',) |
AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',) |
