crosstool-ng: patches/glibc/ports-2.10.1/660-debug-readlink_chk-readklinkat

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 diff -dur glibc-cvs-2.9.orig/debug/readlink_chk.c glibc-cvs-2.9/debug/readlink_chk.c

     2 --- glibc-cvs-2.9.orig/debug/readlink_chk.c	2005-03-01 01:41:15.000000000 +0100

     3 +++ glibc-cvs-2.9/debug/readlink_chk.c	2009-06-01 10:59:37.000000000 +0200

     4 @@ -25,7 +25,7 @@

     7  ssize_t

     8 -__readlink_chk (const char *path, void *buf, size_t len, size_t buflen)

     9 +__readlink_chk (const char *path, char *buf, size_t len, size_t buflen)

    10  {

    11    if (len > buflen)

    12      __chk_fail ();

    13 diff -dur glibc-cvs-2.9.orig/debug/readlinkat_chk.c glibc-cvs-2.9/debug/readlinkat_chk.c

    14 --- glibc-cvs-2.9.orig/debug/readlinkat_chk.c	2006-04-24 18:56:12.000000000 +0200

    15 +++ glibc-cvs-2.9/debug/readlinkat_chk.c	2009-06-01 11:07:26.000000000 +0200

    16 @@ -21,7 +21,7 @@

    19  ssize_t

    20 -__readlinkat_chk (int fd, const char *path, void *buf, size_t len,

    21 +__readlinkat_chk (int fd, const char *path, char *buf, size_t len,

    22  		  size_t buflen)

    23  {

    24    if (len > buflen)

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 1394	51d112dfbe79
permissions	-rw-r--r--