crosstool-ng: patches/glibc/2.9/480-alpha-glibc-2.8-cache-shape.patch@ff2181adbd28

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/2.9/6018_all_alpha-glibc-2.8-cache-shape.patch

     3 -= BEGIN original header =-

     4 older verisons of glibc would build dl-sysdep as shared-only and dl-support as

     5 static-only.  alpha hooks in a cache variable via dl-auxv.h.  newer versions of

     6 glibc build dl-sysdep as both shared and static which means we now have symbol

     7 duplication for static builds with dl-sysdep and dl-support.  since dl-sysdep

     8 is both shared/static, there is no point in hooking dl-support anymore, so we

     9 can punt it.

    11 -= END original header =-

    13 diff -durN glibc-2_9.orig/sysdeps/unix/sysv/linux/alpha/dl-support.c glibc-2_9/sysdeps/unix/sysv/linux/alpha/dl-support.c

    14 --- glibc-2_9.orig/sysdeps/unix/sysv/linux/alpha/dl-support.c	2007-03-13 22:25:16.000000000 +0100

    15 +++ glibc-2_9/sysdeps/unix/sysv/linux/alpha/dl-support.c	2009-02-02 22:01:37.000000000 +0100

    16 @@ -1,1 +1,0 @@

    17 -#include "dl-auxv.h"

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 1273	33f0fcab7f03
permissions	-rw-r--r--