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config/arch/powerpc.in.2
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Sep 14 12:59:17 2011 +0200 (2011-09-14)
changeset 2676 af542a04bf69
parent 2484 d1a8c2ae7946
permissions -rw-r--r--
cc/gcc: speed up the build a little bit

Even if the current process is highly parallel, crosstool-NG spends most
of its time in single-job steps on fast machines (with a 12-CPU system,
I approximate the parallel vs. non-parallel time to be in the order os
1 to 3; that is crostool-NG spends two-thirds of its time running
non-parallel jobs).

Some steps to build gcc can be paralleled, gaining a litle bit of time
on the whole compilation.

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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