crosstool-ng: patches/uClibc/0.9.30.2/110-arm_fix

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.

     3 -= BEGIN original header =-

     4 ARMV5 can use STRD and LDRD access instructions but these accesses need to be

     5 8 byte aligned. The dynamic linker's malloc needs to match this so structures

     6 become 8 byte aligned to void unaligned accesses.

     8 RP - 14/02/2008

    10 -= END original header =-

    12 Modified slightly for uClibc-0.9.30.2 by Joachim Nilsson <jocke@vmlinux.org>

    14 diff -durN uClibc-0.9.30.orig/ldso/ldso/arm/dl-sysdep.h uClibc-0.9.30/ldso/ldso/arm/dl-sysdep.h

    15 --- uClibc-0.9.30.orig/ldso/ldso/arm/dl-sysdep.h	2008-09-25 10:35:20.000000000 +0200

    16 +++ uClibc-0.9.30/ldso/ldso/arm/dl-sysdep.h	2009-02-07 09:57:59.000000000 +0100

    17 @@ -15,6 +15,8 @@

    18    GOT_BASE[1] = (unsigned long) MODULE; \

    19  }

    21 +#define DL_MALLOC_ALIGN 8  /* EABI needs 8 byte alignment for STRD LDRD*/

    22 +

    23  static __always_inline unsigned long arm_modulus(unsigned long m, unsigned long p)

    24  {

    25  	unsigned long i,t,inc;

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--