1414 |
|
x*) have_dyngen_gcc3=yes ;; |
1415 |
|
esac |
1416 |
|
if [[ "x$have_dyngen_gcc3" = "xyes" ]]; then |
1417 |
< |
DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -falign-functions=0" |
1417 |
> |
DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-align-functions" |
1418 |
|
else |
1419 |
|
DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -malign-functions=0" |
1420 |
|
fi |
1485 |
|
LDFLAGS="$LDFLAGS -O3 -OPT:Olimit=0 -IPA" |
1486 |
|
fi |
1487 |
|
|
1488 |
+ |
dnl Check for linker script support |
1489 |
+ |
case $target_os:$target_cpu in |
1490 |
+ |
linux*:i?86) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";; |
1491 |
+ |
linux*:x86_64) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-x86_64.ld";; |
1492 |
+ |
linux*:powerpc) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-ppc.ld";; |
1493 |
+ |
netbsd*:i?86) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/linux-i386.ld";; |
1494 |
+ |
freebsd*:i?86) LINKER_SCRIPT_FLAGS="-Wl,-T,ldscripts/freebsd-i386.ld";; |
1495 |
+ |
darwin*:*) LINKER_SCRIPT_FLAGS="-Wl,-seg1addr,0x78048000";; |
1496 |
+ |
esac |
1497 |
+ |
if [[ -n "$LINKER_SCRIPT_FLAGS" ]]; then |
1498 |
+ |
AC_CACHE_CHECK([whether linker script is usable], |
1499 |
+ |
ac_cv_linker_script_works, [ |
1500 |
+ |
AC_LANG_SAVE |
1501 |
+ |
AC_LANG_CPLUSPLUS |
1502 |
+ |
saved_LDFLAGS="$LDFLAGS" |
1503 |
+ |
LDFLAGS="$LDFLAGS $LINKER_SCRIPT_FLAGS" |
1504 |
+ |
AC_TRY_RUN( |
1505 |
+ |
[int main() {if ((char *)&main < (char *)0x70000000) return 1;}], |
1506 |
+ |
[ac_cv_linker_script_works=yes], |
1507 |
+ |
[ac_cv_linker_script_works=no], |
1508 |
+ |
dnl When cross-compiling, assume it works |
1509 |
+ |
[ac_cv_linker_script_works="guessing yes"] |
1510 |
+ |
) |
1511 |
+ |
AC_LANG_RESTORE |
1512 |
+ |
if [[ "$ac_cv_linker_script_works" = "no" ]]; then |
1513 |
+ |
LDFLAGS="$saved_LDFLAGS" |
1514 |
+ |
LINKER_SCRIPT_FLAGS="" |
1515 |
+ |
fi |
1516 |
+ |
]) |
1517 |
+ |
fi |
1518 |
+ |
AC_TRANSLATE_DEFINE(HAVE_LINKER_SCRIPT, "$ac_cv_linker_script_works", |
1519 |
+ |
[Define if there is a linker script to relocate the executable above 0x70000000.]) |
1520 |
+ |
|
1521 |
|
dnl Generate Makefile. |
1522 |
|
AC_SUBST(PERL) |
1523 |
|
AC_SUBST(USE_DYNGEN, [$ac_cv_use_dyngen]) |