blob: 7aaa5361f0f2718b23a372772393ccf49593933c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
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"
|
