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config/arch/arm.in.2
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Thu Aug 25 18:30:18 2011 +0200 (2011-08-25)
changeset 2645 9cb3554bebeb
parent 2111 5f4dbeb370e1
child 2788 b6faa28e76e0
permissions -rw-r--r--
configure: check for lzma

Some packages are available as LZMA tarballs. LZMA is a relatively recent
compression algorithm; it's slightly better than bzip2, but offers much
faster decompression. LZMA is now deprecated in favor of XZ, but some
packages switched to LZMA when XZ was not yet available, or still in its
infancy. Latest XZ (which totaly obsoletes LZMA) offers a backward LZMA-
compatible utility, so we can check for 'lzma' nonetheless.

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

     2 

     3 config ARCH_ARM_MODE

     4     string

     5     default "arm"   if ARCH_ARM_MODE_ARM

     6     default "thumb" if ARCH_ARM_MODE_THUMB

     7 

     8 choice

     9     bool

    10     prompt "Default instruction set mode"

    11     default ARCH_ARM_MODE_ARM

    12 

    13 config ARCH_ARM_MODE_ARM

    14     bool

    15     prompt "arm"

    16     help

    17       Defaults to emitting instructions in the ARM mode.

    18 

    19 config ARCH_ARM_MODE_THUMB

    20     bool

    21     prompt "thumb (EXPERIMENTAL)"

    22     depends on EXPERIMENTAL

    23     help

    24       Defaults to emitting instructions in the THUMB mode.

    25 

    26 endchoice

    27 

    28 config ARCH_ARM_INTERWORKING

    29     bool

    30     prompt "Use Thumb-interworking (READ HELP)"

    31     depends on EXPERIMENTAL

    32     help

    33       Excerpt from the gcc manual:

    34       

    35       > Generate code which supports calling between the ARM and Thumb

    36       > instruction sets. Without this option the two instruction sets

    37       > cannot be reliably used inside one program. The default is

    38       > [not to use interwork], since slightly larger code is generated

    39       > when [interwork] is specified.

    40 

    41 config ARCH_ARM_EABI

    42     bool

    43     prompt "Use EABI"

    44     default y

    45     help

    46       Set up the toolchain so that it generates EABI-compliant binaries.

    47 

    48 config ARCH_ARM_ABI_OK

    49     bool

    50     default y

    51     depends on ! ARCH_ARM_EABI

    52     select ARCH_SUPPORT_ABI
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