crosstool-ng: config/kernel/linux.in.2@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 # Linux kernel options

     3 if KERNEL_LINUX_INSTALL

     5 choice

     6     bool

     7     prompt "Kernel verbosity:"

     8     default KERNEL_LINUX_VERBOSITY_0

    10 config KERNEL_LINUX_VERBOSITY_0

    11     bool

    12     prompt "Simplified"

    13     help

    14       Print simplified command lines.

    16 config KERNEL_LINUX_VERBOSITY_1

    17     bool

    18     prompt "Full commands"

    19     help

    20       Print full command lines.

    22 config KERNEL_LINUX_VERBOSITY_2

    23     bool

    24     prompt "Exec reasons"

    25     help

    26       Print the reasons why a make target is rebuild.

    28 endchoice

    30 config KERNEL_LINUX_VERBOSE_LEVEL

    31     int

    32     default 0 if KERNEL_LINUX_VERBOSITY_0

    33     default 1 if KERNEL_LINUX_VERBOSITY_1

    34     default 2 if KERNEL_LINUX_VERBOSITY_2

    36 config KERNEL_LINUX_INSTALL_CHECK

    37     bool

    38     prompt "Check installed headers"

    39     default y

    40     help

    41       If you are in doubt that installed headers are buggy, say 'Y'

    42       here to have an extra check passed onto the headers.

    44 endif # KERNEL_LINUX_INSTALL

author	Bryan Hundven <bryanhundven@gmail.com>
	Sun Jun 26 03:26:54 2011 -0700 (2011-06-26)
changeset 2515	364b06df9e3a
parent 2420	f5969ca41691
child 2603	461b9c476104
permissions	-rw-r--r--