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patches/glibc/2.9/480-alpha-glibc-2.8-cache-shape.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 1273 33f0fcab7f03
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>
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Original patch from: gentoo/src/patchsets/glibc/2.9/6018_all_alpha-glibc-2.8-cache-shape.patch
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-= BEGIN original header =-







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







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







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







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







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







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can punt it.







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-= END original header =-







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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







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







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







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







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-#include "dl-auxv.h"












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