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config/kernel.in
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:47:16 2010 +0200 (2010-07-29)
changeset 2045 fdaa6c7f6dea
parent 1976 2d90ec981ba3
child 2484 d1a8c2ae7946
permissions -rw-r--r--
cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net> 
     1 # Kernel options

     2 

     3 menu "Operating System"

     4 

     5 # Config option used throughout the config and code to determine wether

     6 # we have a kernel or not (there might be different bare metal stuff)...

     7 config BARE_METAL

     8     bool

     9     default n

    10 

    11 config MINGW32

    12     bool

    13     default n

    14 

    15 # Each target OS (aka kernel) that support shared libraries can select

    16 # this, so the user can decide whether or not to build a shared library

    17 # enabled toolchain

    18 config KERNEL_SUPPORTS_SHARED_LIBS

    19     bool

    20     default n

    21 

    22 config KERNEL

    23     string

    24 

    25 config KERNEL_VERSION

    26     string

    27 

    28 source "config.gen/kernel.in"

    29 

    30 comment "Common kernel options"

    31 

    32 config SHARED_LIBS

    33     bool

    34     prompt "Build shared libraries"

    35     depends on KERNEL_SUPPORTS_SHARED_LIBS

    36     default y

    37     help

    38       Say 'y' here, unless you don't want shared libraries.

    39       

    40       You might not want shared libraries if you're building for a target that

    41       don't support it (maybe some nommu targets, for example, or bare metal).

    42 

    43 source "config.gen/kernel.in.2"

    44 

    45 endmenu
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