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Add -mno-stack-arg-probe on mingw.

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This argument disables generation of calls to __chkstk_ms. Those calls are
useless on GRUB as function is dummy. Yet they increase module size and
use limited-range relocations which may not work under some memory layouts.
We currently don't use such layouts on concerned platforms but lt's correct
this.
This commit is contained in:
Vladimir Serbinenko 2015-12-31 18:15:49 +01:00
parent 68e158dffd
commit f1b3525385
1 changed files with 12 additions and 0 deletions
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12
configure.ac
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@ -910,6 +910,18 @@ if test x"$target_os" = xcygwin && test "x$grub_cv_cc_no_reorder_functions" = xy
TARGET_CFLAGS="$TARGET_CFLAGS -fno-reorder-functions"
fi
AC_CACHE_CHECK([whether -mno-stack-arg-probe works], [grub_cv_cc_mno_stack_arg_probe], [
CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_cc_mno_stack_arg_probe=yes],
[grub_cv_cc_mno_stack_arg_probe=no])
])
if test "x$grub_cv_cc_mno_stack_arg_probe" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
fi
# By default, GCC 4.6 generates .eh_frame sections containing unwind
# information in some cases where it previously did not. GRUB doesn't need
# these and they just use up vital space. Restore the old compiler