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config/arch/powerpc.in.2
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Thu Jan 24 22:21:19 2013 +0100 (2013-01-24)
changeset 3174 239ea86a47f6
parent 2484 d1a8c2ae7946
permissions -rw-r--r--
cc/gcc: remove 'sub-level' version form symbols

Now we use defconfig files to store the samples, we have to be a bit more
conservatives in the symbols names, so as to avoid gigantic version bumps
when updating sub-level versions from a package.

For example (using fictitious versions):
- in crosstool-NG 1.17.0, we choose:
- latest gcc is gcc-linaro-4.7-2012.10, which is the default for the
choice in the menuconfig
- gcc-linaro-4.6-2012.10 is selected
- so, sample has an explicit symbol for the selected gcc version, as it
is not the default
- we update to crosstool-NG 1.18.0:
- latest gcc version is gcc-linaro-4.7-2013.01
- gcc-linaro-46 has been updated to gcc-linaro-4.6-2013.01
- as the sample now has no *valid* symbol to set the gcc version, the
default is used, while we would have expected to still use the 4.6
release from linaro, not the 4.7

Get rid of sub-level (ie. the third digit sequence in versions) from the
symbols for linaro versions.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.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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