crosstool-ng: patches/glibc/ports-2.10.1/520-alpha-add-futex-defines.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 2009-05-19  Aurelien Jarno  <aurelien@aurel32.net>

     3 	* sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h: Define

     4 	FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET, FUTEX_CLOCK_REALTIME and

     5 	FUTEX_BITSET_MATCH_ANY.

     7  ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h |    5 +++++

     8  1 file changed, 5 insertions(+)

    10 diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h

    11 --- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h	2009-05-16 10:36:20.000000000 +0200

    12 +++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h	2009-11-13 00:51:11.000000000 +0100

    13 @@ -37,7 +37,12 @@

    14  #define FUTEX_LOCK_PI		6

    15  #define FUTEX_UNLOCK_PI		7

    16  #define FUTEX_TRYLOCK_PI	8

    17 +#define FUTEX_WAIT_BITSET	9

    18 +#define FUTEX_WAKE_BITSET	10

    19  #define FUTEX_PRIVATE_FLAG	128

    20 +#define FUTEX_CLOCK_REALTIME	256

    21 +

    22 +#define FUTEX_BITSET_MATCH_ANY	0xffffffff

    24  /* Values for 'private' parameter of locking macros.  Yes, the

    25     definition seems to be backwards.  But it is not.  The bit will be

    26 diff -durN glibc-2.10.1.orig/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.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--