Description: Build with -fno-asynchronous-unwind-tables to save space
Author: Vladimir Serbinenko <phcoder@gmail.com>
Origin: upstream, http://bazaar.launchpad.net/~vcs-imports/grub/grub2-bzr/revision/3589
Last-Update: 2012-03-06

Index: b/configure.ac
===================================================================
--- a/configure.ac
+++ b/configure.ac
@@ -415,6 +415,23 @@
   fi
 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"