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>
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# powerpc specific configuration file
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config ARCH_powerpc_ABI
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    string
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    default ""     if ARCH_powerpc_ABI_DEFAULT
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    default "eabi" if ARCH_powerpc_ABI_EABI
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    default "spe"  if ARCH_powerpc_ABI_SPE
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choice
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    bool
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    prompt "ABI"
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    default ARCH_powerpc_ABI_DEFAULT
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config ARCH_powerpc_ABI_DEFAULT
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    bool
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    prompt "default"
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    help
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      The default ABI (System V.4).
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config ARCH_powerpc_ABI_EABI
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    bool
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    prompt "EABI"
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    depends on BARE_METAL
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    help
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      The Embedded ABI (stack alignment of 8 bytes, etc).
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config ARCH_powerpc_ABI_SPE
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    bool
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    prompt "SPE"
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    help
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      Add support for the Signal Processing Engine.  This will set up
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      the toolchain so that it supports the SPE ABI extensions. This
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      mainly targets Freescale e500 processors.
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      Setting this option will append "spe" to the end of your target
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      tuple name (e.g., powerpc-e500v2-linux-gnuspe) so that the gcc
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      configure/build system will know to include SPE ABI support. It
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      will also automatically add "-mabi=spe -mspe" to your TARGET_CFLAGS,
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      and "--enable-e500_double" to your CC_EXTRA_CONFIG_ARRAY, so you
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      do not need to explicitly add them.
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endchoice