crosstool-ng: patches/glibc/ports-2.10.1/410-alpha-no-page-header.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 2008-06-07  Mike Frysinger  <vapier@gentoo.org>

     3 	* sysdeps/unix/sysv/linux/alpha/sys/user.h: Copy page.h definitions

     4 	from the kernel header to sys/user.h and remove the #include of

     5 	sys/user.h.

     7 diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h

     8 --- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h	2009-05-16 10:36:20.000000000 +0200

     9 +++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/sys/user.h	2009-11-13 00:50:47.000000000 +0100

    10 @@ -23,7 +23,6 @@

    11     only. Don't read too much into it. Don't use it for anything other

    12     than gdb/strace unless you know what you are doing. */

    14 -#include <asm/page.h>

    15  #include <asm/reg.h>

    17  struct user

    18 @@ -41,6 +40,9 @@

    19    char u_comm[32];				/* user command name */

    20  };

    22 +#define PAGE_SHIFT		13

    23 +#define PAGE_SIZE		(1 << PAGE_SHIFT)

    24 +#define PAGE_MASK		(~(PAGE_SIZE-1))

    25  #define NBPG			PAGE_SIZE

    26  #define UPAGES			1

    27  #define HOST_TEXT_START_ADDR	(u.start_code)

    28 diff -durN glibc-2.10.1.orig/ports/sysdeps/unix/sysv/linux/alpha/sys/user.h glibc-2.10.1/ports/sysdeps/unix/sysv/linux/alpha/sys/user.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
permissions	-rw-r--r--