| 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]) |
