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* configure.ac: Add -fno-asynchronous-unwind-tables.

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Vladimir 'phcoder' Serbinenko 2011-11-12 19:18:42 +01:00
parent 2b23074a0c
commit e9d3421c05
2 changed files with 21 additions and 0 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2011-11-12 Vladimir Serbinenko <phcoder@gmail.com>
* configure.ac: Add -fno-asynchronous-unwind-tables.
2011-11-12 Vladimir Serbinenko <phcoder@gmail.com>
Move assembly code to C by using intwrap. It increases core size

17
configure.ac
View File

@ -413,6 +413,23 @@ if test "x$grub_cv_cc_fno_dwarf2_cfi_asm" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -fno-dwarf2-cfi-asm"
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
# behaviour.
AC_CACHE_CHECK([whether -fno-asynchronous-unwind-tables works], [grub_cv_cc_fno_asynchronous_unwind_tables], [
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-dwarf2-cfi-asm"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[grub_cv_cc_fno_asynchronous_unwind_tables=yes],
[grub_cv_cc_fno_asynchronous_unwind_tables=no])
CFLAGS="$SAVE_CFLAGS"
])
if test "x$grub_cv_cc_fno_asynchronous_unwind_tables" = xyes; then
TARGET_CFLAGS="$TARGET_CFLAGS -fno-asynchronous-unwind-tables"
fi
grub_apple_target_cc
if test x$grub_cv_apple_target_cc = xyes ; then
TARGET_CPPFLAGS="$TARGET_CPPFLAGS -DAPPLE_CC=1"