crosstool-ng: config/binutils.in@364b06df9e3a

glibc: Refactor startfiles/headers into do_libc_backend()

Refactor the contents of 'do_libc_start_files()' and 'do_libc()' into a
parameterized 'do_libc_backend()'. 'do_libc_start_files()' and 'do_libc()'
call 'do_libc_backend()' with either 'libc_mode=startfiles' or
'libc_mode=final' (respectively) so that the startfiles/headers and
the final libc builds are configured and built with the same options.

One example of where this is needed is when building a mips toolchain.
Previously, if you were building an n32 toolchain, you wouldn't have
noticed an issue, because if '-mabi' is not in CFLAGS, n32 is the
default:

http://sourceware.org/git/?p=glibc-ports.git;a=blob;f=sysdeps/mips/preconfigure;hb=HEAD

But when trying to build an o32 or n64 toolchain the build would
have failed. This is because (e)glibc expects "-mabi={o32,n32,n64}" to be
in CFLAGS, but was not previously provided in 'do_libc_start_files()'.
The build failure would happen in the shared-core gcc when it tries to
configure an n64 or o32 gcc with an n32 libc.

A simpler solution would have been to just add TARGET_CFLAGS to configure
in 'do_libc_start_files()', but this way makes configure and make
consistent for both steps.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>

     1 # Binary utilities menu

     3 menu "Binary utilities"

     5 choice

     6     bool

     7     prompt "Binary format:"

     9 if ARCH_USE_MMU || BARE_METAL

    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.

    18 endif # ARCH_USE_MMU

    20 if ! ARCH_USE_MMU

    22 config ARCH_BINFMT_FLAT

    23     bool

    24     prompt "Flat"

    25     help

    26       This will build flat binaries, suitable for

    27       MMU-less architectures.

    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).

    37 endif # ! ARCH_USE_MMU

    39 endchoice

    41 source "config/binutils/binutils.in"

    42 source "config/binutils/elf2flt.in"

    43 source "config/binutils/sstrip.in"

    45 endmenu

author	Bryan Hundven <bryanhundven@gmail.com>
	Sun Jun 26 03:26:54 2011 -0700 (2011-06-26)
changeset 2515	364b06df9e3a
parent 1887	5d872df743fe
child 2564	5d4e91c0343e
permissions	-rw-r--r--