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config/binutils.in
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jun 13 23:45:29 2010 +0200 (2010-06-13)
changeset 1982 63cee3d5ab85
parent 1887 5d872df743fe
child 2564 5d4e91c0343e
permissions -rw-r--r--
libc/newlib: build in the 'start files' pass

A few facts:
- building the C library requires a proper core compiler
- core compiler is issued from one of the core passes
- the C library is required to build libstdc++
- newlib is only built for baremetal
- in bare metal, the final compiler is issued from one of the core passes

So we need to build the C library between core pass 1 and core pass 2.
The only place is eithe libc_headers() or libc_start_files(). The most
pertinent seems to be libc_start_files().

So we build newlib from libc_start_files(), and leave libc() empty. 
     1 # Binary utilities menu

     2 

     3 menu "Binary utilities"

     4 

     5 choice

     6     bool

     7     prompt "Binary format:"

     8 

     9 if ARCH_USE_MMU || BARE_METAL

    10 

    11 config ARCH_BINFMT_ELF

    12     bool

    13     prompt "ELF"

    14     help

    15       This will make your system build ELF exectubales,

    16       suitable for architectures with an MMU.

    17 

    18 endif # ARCH_USE_MMU

    19 

    20 if ! ARCH_USE_MMU

    21 

    22 config ARCH_BINFMT_FLAT

    23     bool

    24     prompt "Flat"

    25     help

    26       This will build flat binaries, suitable for

    27       MMU-less architectures.

    28 

    29 config ARCH_BINFMT_FDPIC

    30     bool

    31     prompt "FD_PIC ELF"

    32     help

    33       This will build FD_PIC ELF binaries, suitable for

    34       MMU-less architectures that still require to use

    35       shared libraries (FIXME).

    36 

    37 endif # ! ARCH_USE_MMU

    38 

    39 endchoice

    40 

    41 source "config/binutils/binutils.in"

    42 source "config/binutils/elf2flt.in"

    43 source "config/binutils/sstrip.in"

    44 

    45 endmenu
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