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patches/gcc/4.2.4/241-arm-bigendian2.patch
author "Bryan Hundven" <bryanhundven@gmail.com>
Thu Mar 01 15:23:49 2012 -0800 (2012-03-01)
changeset 2909 28ac8fbd9e6a
permissions -rw-r--r--
libg/eglibc: add updated eglibc 2.15

Includes a patch to remove __builtin_expect test:

In eglibc-2.15, the build breaks in configure while testing
for the existance of __builtin_expect. It fails with newer
versions of gcc.

This patch is a modification of an upstream change in glibc
mainline (to be 2.16) to fix the following error:

[CFG ] checking for __builtin_expect... no
[ERROR] configure: error: support for __builtin_expect needed

http://sourceware.org/git/?p=glibc.git;a=commit;h=3857022a761ea7251f8e5c0e45d382ebc3e34cf9

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
[yann.morin.1998@free.fr: coalesce both patches into a single changeset]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> 
     1 Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:

     2 

     3 I tried to use crosstool-ng to generate a toolchain for Linux on big

     4 endian arm with recent versions of gcc, glibc, etc... but had a few

     5 problems.

     6 

     7 It appears that the gcc patch (for gcc 4.2.x)

     8 for big-endian arm (240-arm-bigendian.patch) lacks the change attached

     9 to this mail as 240-arm-bigendian2.patch.

    10 

    11 --- gcc-4.2.4/gcc/config/arm/bpabi.h~	2007-09-01 17:28:30.000000000 +0200

    12 +++ gcc-4.2.4/gcc/config/arm/bpabi.h	2009-01-05 19:19:10.000000000 +0100

    13 @@ -32,9 +32,19 @@

    14  #undef FPUTYPE_DEFAULT

    15  #define FPUTYPE_DEFAULT FPUTYPE_VFP

    16  

    17 +/*

    18 + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*

    19 + * (big endian) configurations.

    20 + */

    21 +#if TARGET_BIG_ENDIAN_DEFAULT

    22 +#define TARGET_ENDIAN_DEFAULT MASK_BIG_END

    23 +#else

    24 +#define TARGET_ENDIAN_DEFAULT 0

    25 +#endif

    26 +

    27  /* EABI targets should enable interworking by default.  */

    28  #undef TARGET_DEFAULT

    29 -#define TARGET_DEFAULT MASK_INTERWORK

    30 +#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)

    31  

    32  /* The ARM BPABI functions return a boolean; they use no special

    33     calling convention.  */
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