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patches/glibc/2.9/460-alpha-glibc-2.5-no-asm-elf-header.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
parent 1201 c9967a6e3b25
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/6016_all_alpha-glibc-2.5-no-asm-elf-header.patch

     2 

     3 -= BEGIN original header =-

     4 2007-03-13  Mike Frysinger  <vapier@gentoo.org>

     5 

     6 	* sysdeps/unix/sysv/linux/alpha/sys/procfs.h: Copy some defines

     7 	from alpha's asm/elf.h

     8 

     9 -= END original header =-

    10 

    11 diff -durN glibc-2_9.orig/sysdeps/unix/sysv/linux/alpha/sys/procfs.h glibc-2_9/sysdeps/unix/sysv/linux/alpha/sys/procfs.h

    12 --- glibc-2_9.orig/sysdeps/unix/sysv/linux/alpha/sys/procfs.h	2001-07-06 06:56:13.000000000 +0200

    13 +++ glibc-2_9/sysdeps/unix/sysv/linux/alpha/sys/procfs.h	2009-02-02 22:01:33.000000000 +0100

    14 @@ -29,10 +29,23 @@

    15  #include <sys/types.h>

    16  #include <sys/ucontext.h>

    17  #include <sys/user.h>

    18 -#include <asm/elf.h>

    19  

    20  __BEGIN_DECLS

    21  

    22 +/*

    23 + * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.

    24 + * I have no idea why that is so.  For now, we just leave it at 33

    25 + * (32 general regs + processor status word). 

    26 + */

    27 +#define ELF_NGREG	33

    28 +#define ELF_NFPREG	32

    29 +

    30 +typedef unsigned long elf_greg_t;

    31 +typedef elf_greg_t elf_gregset_t[ELF_NGREG];

    32 +

    33 +typedef double elf_fpreg_t;

    34 +typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

    35 +

    36  struct elf_siginfo

    37    {

    38      int si_signo;			/* Signal number.  */
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