config/companion_tools.in
author Bryan Hundven <bryanhundven@gmail.com>
Sun Jun 26 03:26:54 2011 -0700 (2011-06-26)
changeset 2515 364b06df9e3a
parent 1730 c43d16b6b950
child 3291 ccef9a13c09b
permissions -rw-r--r--
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>
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# Companion tools config options
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if EXPERIMENTAL
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menu "Companion tools"
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comment "READ HELP before you say 'Y' below !!!"
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config COMP_TOOLS
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    bool
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    prompt "Build some companion tools"
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    help
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      Crosstool-NG relies on some external tools to be recent enough, namely:
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        make = 3.81 (in some cases)
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        m4 >= 1.4.12
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        autoconf >= 2.63
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        automake >= 1.10.2
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        libtool >= 2.2.4
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      If your system has older versions, we can build them for you,
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      but you are strongly encouraged to update your system instead!
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if COMP_TOOLS
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config COMP_TOOLS_make
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    bool
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    prompt "make"
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config COMP_TOOLS_m4
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    bool
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    prompt "m4"
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config COMP_TOOLS_autoconf
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    bool
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    prompt "autoconf"
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config COMP_TOOLS_automake
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    bool
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    prompt "automake"
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config COMP_TOOLS_libtool
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    bool
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    prompt "libtool"
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endif
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endmenu
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endif