config: replace COMP_LIBS with COMPLIBS

complibs/mpfr: fix extract

With MPFR 2.4.2, autoreconf needs to be run as well.

scripts: add script to publish patches

This script creates the patches for an existing version.

Re-enable the FD_PIC ELF configuration option

Blackfin uses FD_PIC ELF format to provide shared libraries on a
non-MMU architecture.

Fix the uClibc clean-up-O_CLOEXEC-handling patch

In the Blackfin case (untested until now), this patch was lacking a
leading / at the end of a comment.

libc/glibc: add patch to ports-2.9 to fix sjlj from ARM FPU

As discussed there: http://sourceware.org/bugzilla/show_bug.cgi?id=9678#c4

Reported by: Sasha Sirotkin <buildroot@browserseal.com>
(transplanted from dfc2b3e07ea6ea0761fb91df7c3c7fcdc718cc5f)

scripts/populate: fix handling the forced libraries list-file

If a list-file is used, then each library in the file will be handled
twice (not a real issue, as the second iteration will find the library
already present, just avoid doing the job twice).
(transplanted from 7fec5db8933cb296c665b8526f27a779aa0c0c7a)

cc/gcc: fix building for powerpc for the 4.4.x series

Reported by: Thomas Petazzoni
http://sourceware.org/ml/crossgcc/2010-03/msg00057.html

Discussions:
http://lists.uclibc.org/pipermail/uclibc/2010-March/043697.html
http://lists.uclibc.org/pipermail/buildroot/2010-March/032790.html
http://ibot.rikers.org/%23uclibc/20100316.html.gz
(search for "copysignl", by kos_tom, blindvt and y_morin)
(transplanted from 76b1923da63d2e3b8e9010b6138e33f6a99720a8)

libc/uclibc: add uClibc 0.9.31

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
[Yann E. MORIN: mark it EXPERIMENTAL]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

cc/gcc: fix thread-less final gcc build

If threads are disabled in libc, we don't want to enable them in the
final compiler. Doing so pass the configure stage, but fails latter on
a missing <pthread.h>.

Moreover, we don't want to build libgomp if threads are disabled; its
configure script would fails anyway.

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>

cc/gcc: fix recent gcc build

This fix missed conversion of CT_GCC_USE_* to CT_CC_GCC_USE_*.

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>

complibs/gmp: fix patch against 5.0.1

config: allow libc selection in backend mode

In backend mode, allow the upper-layer build system to force the
C library selection.

config: do not force setting kernel and arch

In backend mode, only enforce the arch and/or kernel selection if the
upper-layer build system effectively forces the selection.

scripts: misc help and auto-complete fixes

- don't list samples in the main help screen
- improve the samples listing in list-samples
- don't document the 'config' action, it's long dead
- document the 'V' environment variable
- improve on START, STOP and PREFIX environment variables
- add PREFIX and V to autocomplete
- advertise auto-complete at install time

kernel/linux: add latest versions: 2.6.33.2 2.6.32.11 2.6.31.13 2.6.27.46

debug/gdb: update version to 7.1

complibs: update versions

GMP : 4.3.2, 5.0.1*
CLooG/PPL: 0.15.8 0.15.9
libelf : 0.8.13

*: patch series added

scripts/addToolsVersion: fix handling libelf

libelf has moved to the companion libraries section,
and is no longer in the tools section.

libc/glibc: add patch to ports-2.9 to fix sjlj from ARM FPU

As discussed there: http://sourceware.org/bugzilla/show_bug.cgi?id=9678#c4

Reported by: Sasha Sirotkin <buildroot@browserseal.com>

config: fix style issues when source-ing files

Always enclose the sourced file between double-quotes (purely for
consistency; enclosing or not are both allowed by the kconfig language).

config: move backend-related options to their own file

config: hide arch and kernel selection when used as a backend

When used as a backend, it is the responsibility of the upper-layer build
system to set the target architecture and kernel.

config: hide options to debug crosstool-NG when a backend

When used as a backend, it does not make sense to debug crosstool-NG,
so hide the option.

config: hide more config options when a backend

Hide the prompts for some behavioral options, for which the upper-layer build
system is responsible for:
- parallel jobs and maximum load
- use pipes
- use custom shell

config: hide paths when used as a backend

When crosstool-NG is used as a backend, it is the responsibility of the
upper-layer build-system to properly set paths, so we just hide the
prompts in this case.

scripts/populate: optimise search loop

Curently, populate will iterate over all ELF (shared objects|executables)
to look for missing NEEDED DSOs, adding to the list at every iterations
of the search loop.

Instead of looking again at previously handled ELF files, recursively
resolve every ELf files.

Also, in case there are a whole lot of files (more than the shell can
accept as arguments list, or creating a command line longer than the
shell can cope with), use a temporary file with the list of files
to search for missing dependencies.

scripts/populate: cleanups and misc fixes

- it's a POSIX compliant shell script: drop bash, use /bin/sh
- fix help text
- use an absolute path for sysroot
- replace "echo" with "printf"
- replace "stat -c '%i'" with "ls -1id"
- replace "pushd / popd" with "cd / cd -"
- remove superfluous break
- bail out if required lib not found, except if forced

scripts/populate: fix handling the forced libraries list-file

If a list-file is used, then each library in the file will be handled
twice (not a real issue, as the second iteration will find the library
already present, just avoid doing the job twice).

scripts/populate: properly locate the sysroot and required tools

This fixes two problems:
- the sysroot might be in a sub-directory (think SYSROOT_DIR_PREFIX)
- it is not needed to have the target tuple to properly detect the sysroot
and the required tools

As a side effect, this script is now no longer dependent on the target
tuple, and in the future, we might be able to share it across many
toolchains (when/if we can install all of them in the same place).