patches/glibc/2.7/140-i386-preferred-stack-boundary.patch
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:47:16 2010 +0200 (2010-07-29)
changeset 2045 fdaa6c7f6dea
parent 744 4bf8448536d5
permissions -rw-r--r--
cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
yann@434
     1
(C) 2007 Yann E. MORIN <yann.morin.1998@anciens.enib.fr>
yann@434
     2
License: LGPL v2.1
yann@434
     3
yann@434
     4
Shut off a stupid warning: preffered-stack-boundary must be between 4 ad 12,
yann@434
     5
and 2 is not.
yann@434
     6
yann@434
     7
diff -dur glibc-2.5.orig/sysdeps/i386/Makefile glibc-2.5/sysdeps/i386/Makefile
yann@434
     8
--- glibc-2.5.orig/sysdeps/i386/Makefile	2005-03-06 01:18:16.000000000 +0100
yann@434
     9
+++ glibc-2.5/sysdeps/i386/Makefile	2007-05-27 17:49:37.000000000 +0200
yann@434
    10
@@ -36,7 +36,7 @@
yann@434
    11
 ifeq ($(subdir),csu)
yann@434
    12
 sysdep-CFLAGS += -mpreferred-stack-boundary=4
yann@434
    13
 else
yann@434
    14
-sysdep-CFLAGS += -mpreferred-stack-boundary=2
yann@434
    15
+sysdep-CFLAGS += -mpreferred-stack-boundary=4
yann@434
    16
 # Likewise, any function which calls user callbacks
yann@434
    17
 uses-callbacks += -mpreferred-stack-boundary=4
yann@434
    18
 # Likewise, any stack alignment tests