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>

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

	* sysdeps/unix/sysv/linux/sh/sys/procfs.h: Copy Linux's asm-sh/elf.h types.

--- glibc-2_9/sysdeps/unix/sysv/linux/sh/sys/procfs.h

+++ glibc-2_9/sysdeps/unix/sysv/linux/sh/sys/procfs.h

@@ -29,10 +29,19 @@

 #include <sys/types.h>

 #include <sys/ucontext.h>

 #include <sys/user.h>

-#include <asm/elf.h>

 __BEGIN_DECLS

+/*

+ * ELF register definitions...

+ */

+typedef unsigned long elf_greg_t;

+

+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))

+typedef elf_greg_t elf_gregset_t[ELF_NGREG];

+

+typedef struct user_fpu_struct elf_fpregset_t;

+

 struct elf_siginfo

   {

     int si_signo;			/* Signal number.  */