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config/arch/powerpc.in.2
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Jan 03 22:57:25 2012 +0100 (2012-01-03)
changeset 2936 2dfea349d307
parent 2484 d1a8c2ae7946
permissions -rw-r--r--
cc/gcc: build core compilers for canadian

Currently, we rely on an existing external cross-compiler targetting
the target, to build the C library.

This can pause quite a few problems if that compiler is different from
the one we are building, because it could introduce some ABI issues.

This patch removes this dependency, by building the core compilers
as we do for standard cross, and also by building the binutils and
gcc, for running on the build machine.

This means we no longer need to offer the cross-sompiler selection in
the menuconfig.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 # powerpc specific configuration file

     2 

     3 config ARCH_powerpc_ABI

     4     string

     5     default ""     if ARCH_powerpc_ABI_DEFAULT

     6     default "eabi" if ARCH_powerpc_ABI_EABI

     7     default "spe"  if ARCH_powerpc_ABI_SPE

     8 

     9 choice

    10     bool

    11     prompt "ABI"

    12     default ARCH_powerpc_ABI_DEFAULT

    13 

    14 config ARCH_powerpc_ABI_DEFAULT

    15     bool

    16     prompt "default"

    17     help

    18       The default ABI (System V.4).

    19 

    20 config ARCH_powerpc_ABI_EABI

    21     bool

    22     prompt "EABI"

    23     depends on BARE_METAL

    24     help

    25       The Embedded ABI (stack alignment of 8 bytes, etc).

    26 

    27 config ARCH_powerpc_ABI_SPE

    28     bool

    29     prompt "SPE"

    30     help

    31       Add support for the Signal Processing Engine.  This will set up

    32       the toolchain so that it supports the SPE ABI extensions. This

    33       mainly targets Freescale e500 processors.

    34       

    35       Setting this option will append "spe" to the end of your target

    36       tuple name (e.g., powerpc-e500v2-linux-gnuspe) so that the gcc

    37       configure/build system will know to include SPE ABI support. It

    38       will also automatically add "-mabi=spe -mspe" to your TARGET_CFLAGS,

    39       and "--enable-e500_double" to your CC_EXTRA_CONFIG_ARRAY, so you

    40       do not need to explicitly add them.

    41 

    42 endchoice
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