libsecret: not available on AVR32, compiler error

libsecret does built on AVR32 due an internal compiler error, and
since it's unlikely that gcc will ever be upgraded on AVR32, we simply
mark this package as not available. The only reverse dependency of
libsecret is webkit, which already cannot be selected on AVR32.

Fixes:

  http://autobuild.buildroot.org/results/2d4/2d41f97378f06d0f3922e078ec0d02549690d4c1/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

sconeserver: missing dependency on BR2_USE_MMU

The BR2_PACKAGE_SCONESERVER_HTTP_SCONESITE_IMAGE option of sconeserver
selects imagemagick, but forgets to depends on BR2_USE_MMU, which
imagemagick depends on.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

pcmanfm: add missing BR2_USE_MMU dependency from gamin

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

packages: missing propagation of !mmu from pango

A number of packages that select Pango (which depends on BR2_USE_MMU)
forget to also depends on BR2_USE_MMU. This commit fixes that.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

opencv: add missing dependency on !MMU for gtk support

libgtk2 depends on !MMU, so when OpenCV selects Gtk, it should
propagate this dependency.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

util-linux: libblkid needs fork(), disable on !MMU

The libblkid library in util-linux uses fork. While it seems
potentially possible to disable the parts of the library that use fork
(the only parts using fork are parts related to LVM and Device Mapper,
which are said to be legacy as they are replaced by sysfs based
scanning, instead of having to fork to run a separate process).

However, since libblkid is used by:

 - e2fsprogs, which uses lots of fork all over the place
 - udev, which most likely will also need fork

There is not much point in making libblkid fork-less. As a
consequence, this commit makes util-linux/libblkid unavailable on
non-MMU architectures, and propagates the relevant dependency to the
reverse dependencies of libblkid.

This fixes the e2fsprogs build failure seen on Blackfin. The failure
was due to a configure test of e2fsprogs which was trying to link a
small test program against libblkid, which failed because there was an
undefined reference to fork() in the libblkid code.

Fixes:

  http://autobuild.buildroot.net/results/ee2c1568d16ac040011dd4d6d8b543ff9e9e2622/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

cairo: improve the Blackfin build fix

Patch cairo-001-blackfin-build-fix.patch was added in commit
d372d0b6777f52cd493dc0a892593d4390536ec5 ('cairo: add patch to fix
Blackfin build failure') to take into account the fact that Blackfin
has a non-empty USER_LABEL_PREFIX: C symbol 'foo' corresponds to
assembly symbol '_foo', contrary to most other architectures where
they are the same.

However, the patch was only fixing the relevant macros in
src/cairo-compiler-private.h and did not take into account the
duplicated version of these macros in
util/cairo-script/cairo-script-private.h. This commit fixes that.

This commit is fixing a build failure on Blackfin, for which there was
no recorded autobuilder result because this problem was hidden by the
problem fixed by the previous commit ('cairo: fix build on Blackfin in
test/cairo-test-runner.c').

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

cairo: fix build on Blackfin in test/cairo-test-runner.c

Add a patch for Cairo that ensures <unistd.h> is properly included to
get the prototype of readlink and getppid even on non-MMU platforms.

Fixes:

  http://autobuild.buildroot.net/results/93a97f90345d193b52035b2dc7559a306e11098e/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

binutils: add upstream patch to fix --enable-install-libiberty flag

Fixes http://autobuild.buildroot.org/results/1ea/1ea98985ce06dc1b7569ef5abe2fc13090fb5f3a

The upstream patch patches both configure.ac and configure, so we keep
that.

It is numbered 001 because it is an upstream patch, so it should come
before the buildroot patches.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: mention the per-package graph-depends target

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: document the usage of <pkg>_OVERRIDE_SRCDIR

[Peter: adjust wording as suggested by Yann]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: refresh informations about *-menuconfig targets

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: rephrase paragraph about unsupported external toolchains

The ELDK now relies on Yocto, so it no longer has the funky
non-standard way of doing multilib. Also, we didn't mention that Yocto
toolchains/SDK are not suitable for usage with Buildroot. Therefore,
this commit rewords this part of the documentation to explain that
Yocto/OpenEmbedded SDKs cannot be used as external toolchains in
Buildroot, and why.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: mention that custom toolchains is also useful for BR toolchains

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: update external toolchain examples

Replace ADI by Analog Devices, which is clearer for most people, and
remove the Xilinx external toolchains since we have deprecated them.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: update informations about C library in internal backend

Now that we have eglibc and glibc support in the internal backend, and
no longer marked as experimental, a little bit of rewording is
needed. It is no longer necessary to indicate that uClibc was
historically supported as the only C library, and that the glibc
support is experimental. We also update the rest of the description to
be less uClibc specific.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: add section about build time graphing

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: add section about dependency graphs

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: reference Python and Lua infras from the list of package infrastructures

[Peter: adjust wording as suggested by Yann]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: rephrase and expand part on when a full rebuild is necessary

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: rephrase part about rebuilding packages

There is no need to tell people that they should remove stamp files: they
should use the make <pkg>-reconfigure and make <pkg>-rebuild make targets
instead.  We still keep an explanation about stamp files, just to give the
user an insight on how Buildroot works internally.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/manual: toolchain packages no longer use custom makefiles

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

sdl: fix SDL_AUTORECONF typo in comment

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

qt: needs MMU (fork)

Fixes
http://autobuild.buildroot.net/results/4f7/4f744595efceba2d5a54151bf5f1802eb1268fac/

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

rt-tests: fix mips+uclibc check

The conditional (suggested by me) introduced in 108952 (rt-tests: disable
for uclibc mips) isn't actually valid kconfig syntax, causing menuconfig to
error out.

Rewrite it to use proper syntax.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

rt-tests: disable on bfin

rt-tests depends on NPTL which is not available on the bfin
architecture.

Fixes:
  http://autobuild.buildroot.net/results/ac9/ac95f73b2351d46d9a8c48caae7f6c3ea124e8bc

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

rt-tests: disable for uclibc mips

rt-tests is not supported by a uclibc toolchain that does not implement
_pid in struct sigevent. Currently this is all MIPS architectures
in uclibc.

Fixes:
  http://autobuild.buildroot.net/results/074/074265602bec4aba6c82d1aee389045e8ad33d4b

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-headers: add comment to safely ignore missing cross-compiler

For some architectures (eg. Arc, Cris, Hexagon, ia64, Parisc, Score and
Xtensa), the Linux buildsystem tries to call the cross-compiler when
installing the headers.

This is a spurious call, since a cross-compiler is not needed at all to
install the headers.

As some users have reported the issue, just add a comment in linux-headers.mk
directing the user to ignore those errors.

Reported-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

webkit: disable on powerpc

webkit does not build correctly on powerpc. There is an upstream bug report
with a partial fix, but with remaining problems.
https://bugs.webkit.org/show_bug.cgi?id=113638

Until this problem is fixed, we disable webkit on powerpc.

Fixes
http://autobuild.buildroot.org/results/3ce/3ce992a663ddf1030a987bb778f8275a8e5fdef0/

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux: bump to version 3.13.5

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux-headers: bump 3.{4, 10, 12, 13}.x stable versions

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

alsa-utils/Config.in: move comment to top, to fix nesting of config options

To allow proper nesting of suboptions of a package, the suboptions should
come directly after the main option, and cannot be interleaved with a
comment.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

alsa-utils: disable on no-mmu platforms (fork)

alsa-utils uses fork which is not available on targets without MMU support.
It seems to be possible to replace fork with vfork in alsa-utils, but we do
not like to carry such patches in buildroot without them being accepted
upstream.

Fixes
http://autobuild.buildroot.org/results/9f8/9f8e572c9f1c677155cc7d1828371bcf572ff878

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

alsa-lib: add patch to remove hardcoded -ldl

The AM_PATH_ALSA macro in utils/alsa.m4 unconditionally uses -ldl. This
breaks compilation of alsa-utils (and probably other packages using this
macro) for targets that do not support dynamic loading, such as for
Blackfin FLAT binaries.

This patch updates the macro to check if dlopen is available, and use that
result to conditionally add -ldl to the list of libraries.

Fixes
http://autobuild.buildroot.org/results/de2/de286880973be956f6c504aa9a758171d6f49674/build-end.log

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

alsa-lib: fix build when dynamic load is not supported (e.g. blackfin FLAT)

The FLAT GNU toolchain doesn't include the dlfcn.h header file.
Provide the necessary declarations (RTLD_*) to make alsa-lib happy.

Fixes
http://autobuild.buildroot.org/results/706/7069e1f43cbed745d65f7dd9904a3fff034530ac/build-end.log

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
[Thomas: change sequence number from 003 to 0003, update patch and commit
         message ]
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

alsa-lib: add sequence number to existing patches

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

pixman: fix patch for FE_DIVBYZERO detection

In commit a9baea4345625f6f00fc59395faec83e08346015 ('pixman: add patch
to fix Microblaze build failure'), a patch is added to the pixman
package to avoid using the FE_DIVBYZERO definition when it is not
available. However, it was using the have_fe_divbyzero variable to
define or not HAVE_FEDIVBYZERO, while the AC_CHECK_DECL autoconf macro
sets the ac_cv_have_decl_FE_DIVBYZERO variable.

The end result was that the FE_DIVBYZERO macro was considered as never
being available. This commit fixes that by using the appropriate
variable.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

binutils: install libiberty

Some packages (actually, just oprofile) need to link against libiberty.
This option just installs libiberty.a so it has no effect on the target,
therefore it's not needed to add a config option for it.

Before binutils-2.24, there was a bug in libiberty/Makefile.in that
caused libiberty to be installed regardless of the
--enable-install-libiberty option. This problem wasn't noticed before
because binutils-2.24 is not selected on any of the autobuilders: the
version can only be selected if an internal toolchain is used, and it
defaults to 2.21.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

pixman: add patch to fix Microblaze build failure

The Microblaze build of pixman was failing due to FE_DIVBYZERO not
being implemented. It turns out that the usage of it, like fenv.h and
feenableexcept() is optional. So the patch simply adds a configure
check and disables the appropriate code (which is only use in the
tests anyway).

This commit also renames the existing patch to follow the patch naming
convention, and get a reliable ordering when applying patches.

Fixes:

  http://autobuild.buildroot.org/results/806/8064092cdbac85fbf4322429d29d5d11dc51860f/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libcec: not available on pure static builds

libcec needs libdl, so it cannot work on pure static builds.

Fixes:

  http://autobuild.buildroot.org/results/670/670ce46627daaa4ae9ecdb8ffb6f97d0574354d4/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

sawman: add autoreconf step

sawman needs the autoreconf step added in order for Vicente Olivert
Riera's patch - "sawman: Link using gcc instead of ld"
(8fc5ea004386431eaecfea51376fcc11c23c77c1) - to take effect.

Fixes:
  http://autobuild.buildroot.net/results/19b/19bfe0d39e457fd260b73928331721f57555fc84

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libcgi: fix build failure on pure static library builds

libcgi always builds both the shared and static library, which doesn't
work on architecture that don't support shared library at all, such as
Blackfin with the FLAT format. libcgi uses autoconf, but not automake,
and the Makefile is not of the highest possible quality, so this
commit fixes the problem by introducing a "STATIC" variable that can
be set from the environment. When set to a non-empty value, the
Makefile assumes it should only build the static version of the
library.

Note that this package is in desperate need of some care: there is one
single patch that mixes several changes together, it doesn't have a
description or a Signed-off-by line, and there is now a github project
for libcgi at https://github.com/rafaelsteil/libcgi/ that has the same
fixes.

However, for the purpose of the master branch, we're doing the most
minimal fix possible, by just adding this STATIC variable.

Fixes:

  http://autobuild.buildroot.net/results/625/625105bcaf26345f422b225787fc19611b65cd57/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Fix backup and kernel download url.

Remove duplicated slash from backup and kernel download url,
e.g. http://www.kernel.org/pub//linux/kernel/v3.x/linux-3.13.3.tar.xz

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

iputils: disable on older uclibc versions

Disable when using a uclibc version before 0.9.33 since dn_comp
function support was added in this version. Also disabling on AVR32
since any AVR32 toolchain will be based on a uclibc version older
than 0.9.33 (for using an external AVR32 toolchain).

[Peter: use dn_comp instead of __dn_comp]
Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

distcc: deprecate package, only useful for development

Since quite a while, we have deprecated, and then removed the support
to build a compiler on the target. Therefore, having a distcc package
for the package is quite useless, and this patch consequently marks it
as deprecated so it can be removed in a future version of Buildroot.

Fixes:

  http://autobuild.buildroot.net/results/16b/16be2138c8e5ba785fa2ad55b478dcd1b6fb5123/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

manual: add explanations on limitations about using O=...

Using a relative path for O=... has limitations, since it is interpreted
relative to the Buildroot tree, and thus may lead to unexpected results.

For example, running this:
    make -C buildroot O=my-O

will not create my-O in the current working directory, but as a
sub-directory of the Buildroot tree, here in buildroot/my-O

Explain this in the manual (as is similarly done for BR2_EXTERNAL).
Also add a note that $(O) will be created if missing.

Also change O=.. and -C .. to O=<...> and -C <...> to make it explicit
this is an ellipse, not a relative path.

Reported-by: Jérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Samuel Martin <s.martin49@gmail.com>
Reviewed-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

manual: switch BR2_EXTERNAL examples to use absolute paths

Although it is possible to use relative paths, there are a few pitfalls
when doing so.

To avoid confusion for a (newcoming) user, use absolute paths in the
manual (as is done in examples for $(O)), since it is guaranteed to be
working without corner cases.

[Peter: s/relatively/relative/ as suggested by Thomas]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Makefile: internally use absolute paths to BR2_EXTERNAL

Using a relative path for BR2_EXTERNAL, and using an external defconfig,
such as in (from a Buildroot top-dir):
    make O=.. BR2_EXTERNAL=.. foo_defconfig

is broken. It is unclear why the %_defconfig rule recurses in that case.

This patch internaly makes BR2_EXTERNAL canonical (ie. makes it an absolute
path), and checks the directory exists.

[Peter: s/relatively/relative/ as suggested by Thomas]
Reported-by: Jérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Peter Korsgaard <jacmet@uclibc.org>
Cc: Romain Naour <romain.naour@openwide.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

mpg123: needs MMU

mpg123 needs MMU because the application that is built with this
package uses fork. Currently it is difficult to only build the
libraries for mpg123 so disabling the package all together when there
is no MMU support.

Note: mpg123 is an optional dependency of mpd but mpd already requires
BR2_USE_MMU so there is no need to add this as a dependency.

Fixes:
  http://autobuild.buildroot.net/results/5b0/5b053af566dd122ae7e58893e77d5d5f3070fb9e

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

aiccu: disable on AVR32

In commit 87492d244a1dbf6114bb464e8d8dbedcf08fb399 ("aiccu: disable
for uClibc 0.9.31/0.9.32"), we made sure it was not possible to select
aiccu with uClibc 0.9.31 and 0.9.32, because they lack dn_skipname().

However, we still have the problem that external AVR32 toolchains can
select aiccu, which causes build failures. Therefore, we also disallow
aiccu on AVR32 altogether. We keep the 0.9.31/0.9.32 exclusions,
because if they are used on other architectures, it would also fail
due to the lack of dn_skipname().

Fixes:

  http://autobuild.buildroot.org/results/a24/a2490d434152625d9208615d83f4c5d6daea79d0/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

efl: disallow on non-MMU systems

The libeina library uses the madvise() system call, that isn't
available on non-MMU systems. Also, several other components of EFL
use fork(). Therefore, the easiest solution is to simply disallow the
EFL as a whole on non-MMU systems.

Fixes:

  http://autobuild.buildroot.org/results/ad9/ad90baa5e07569308a7e2b2510b67c5b2a563b44//

Thanks to Ryan Barnett for helping in the investigation!

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

evas: depend on thread support

Evas has an optional mechanism to do asynchronous preloading of
images. This mechanism is optional, and in commit
b6d92bf415df33ac86487d68f5f8299f406859d2 ("libevas: async image
preload support needs threads support in toolchain"), Peter made sure
to disable the asychronous preloading when no thread support was
available.

Unfortunately, it seems like disabling the asynchronous loading is
rarely used, and it in facts fails to build: a member of structure is
not present when asynchronous preloading is disabled, but the code
continues to use it.

Since the fix is not obvious, and all this mechanism seems to have
changed completely in EFL 1.8.x, and we probably don't care much about
EFL without threads, this commit adds a dependency of libevas on
thread support. Consequently, it also reverts commit
b6d92bf415df33ac86487d68f5f8299f406859d2 which is no longer necessary.

Of course, this commit propagates this additional dependency to the
reverse dependencies of libevas.

Fixes:

  http://autobuild.buildroot.org/results/6de/6de90018a9eeb9c495d15046a8b3270eb95a5550//
  http://autobuild.buildroot.org/results/693/693df99db4ab357b48d427be3a72f6d64dd53065//

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

sdl: add support for top-level parallel make

To be sure that host-autoconf dependency is already built move the
call to autogen.sh from SDL_POST_PATCH_HOOKS to SDL_PRE_CONFIGURE_HOOKS.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Acked-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

ncftp: fix cross-compilation test

The cross-compilation test is based on the ability to run
a test program on the host, which is wrong.

If it runs, then the configure script concludes
that we're doing native compilation,
if it doesn't run, we're doing cross-compilation.

The configure script needs to be regenerated to fix the
cross-compilation test.

Fixes
http://autobuild.buildroot.net/results/969/969a49ae97a50634ea846a82b9c360e4fb020ace/build-end.log

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

skeleton: /etc/fstab: make sure /tmp is world writable and sticky

ramfs (which is used instead of tmpfs if CONFIG_SHMEM isn't enabled in the
kernel configuration), defaults to mode 0755 instead of 01777 like tmpfs
uses.

/tmp should be world writable and sticky, so explictly enforce the mode so
ramfs users gets it correct instead of relying on the defaults.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

matchbox-lib: apply upstream based patch to include a missing header

The upstream patch can't be applied as-is because the source code of
the file which is patched has changed. A version bump to the latest
release doesn't fix the problem because the upstream patch was applied
after the resease.

Upstream patch:
   http://git.yoctoproject.org/cgit/cgit.cgi/libmatchbox/commit/?id=9315bcce1f01e7d6c00161442d61d3c676794d9d

Fixes:
   http://autobuild.buildroot.net/results/e4d/e4d510ab6ba69f95401e3120ab90ccdff22deb91/

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

matchbox-lib: rename patches to follow BR guidelines

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

tvheadend: fix error compiling with ccache

The tvheadend configure script fails to correctly handle spaces in any of
the options passed to it.  If ccache is used the configure script fails to
handle the space in the --cc option and errors.  Also the --cflags option
fails to handle multiple entries and only uses the first one.  This patch
simple removes setting the --cc and --cflags options as the configure
script will correctly use the CC and CFLAGS variables already passed in
TARGET_CONFIGURE_OPTS.

Signed-off-by: Martin Bark <martin@barkynet.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

gpsd: disallow NMEA2000 CAN driver on AVR32

AVR32 is using uClibc 0.9.31, which lacks some CAN related definitions
that prevent the gpsd nmea2000 driver from building.

The rest of gpsd, with all options and drivers enabled, builds fine on
AVR32.

Fixes:

  http://autobuild.buildroot.org/results/ee2/ee2ec848e893f08fa80caf99a67e68b73b6400e8/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

gpm: disable on !MMU, requires fork()

Fixes:

  http://autobuild.buildroot.net/results/b2b/b2beb4876fba22f139df9c336ff0fae77354721b/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

dhcpcd: disable on static library builds

dhcpcd uses dlopen(), so it is not compatible with pure static library
builds.

Fixes:

  http://autobuild.buildroot.net/results/512/51249e8d3487e17bb6a60a99dcbd461f7b591eac/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

coreutils: add gnulib patch to fix librt/libthread link in static case

coreutils was not building in the static link case with uClibc, due to
binaries being linked with librt (for timer functions), but not with
libpthread. However, librt uses functions from libpthread, so both
must be specified. This lack of linking against libpthread was caused
by a deficiency in one of the gnulib m4 macro, for which we add a patch.

Fixes:

  http://autobuild.buildroot.org/results/bd4/bd4cc779b46e3837e3d6c43c97eaf42fdfc3a288/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

pv: fix minisetlocale related build failure

pv configure script is somewhat stupid: if it cannot find the host
gettext tool msgfmt, it concludes that gettext is not available, and
provides its own minimal version. Unfortunately, this minimal version
conflicts with the available target gettext. We fix this by ensuring
that host-gettext is built if gettext support is enabled, by adding it
to the dependencies.

Fixes:

  http://autobuild.buildroot.org/results/d30/d30db79190f2cf8953751d55a5d34644f60daec4/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

gdb: cross-gdb has no support for NIOS 2

Fixes:

  http://autobuild.buildroot.org/results/df0/df09e1fe301480b599be777bf26874d66a152810//

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libv4l: fix build on AArch64

AArch64 does not implement the SYS_open system call, but only the
SYS_openat system call, as should be done for all modern architectures
merged into the Linux kernel. This causes problems when building
libv4l 0.8.9, which are fixed by integrating an upstream patch,
available in a more recent version of libv4l. Backporting the patch is
preferred over bumping libv4l, as libv4l has a fairly large number of
reverse dependencies, and we don't want to break anything that close
to the release.

Note that this commit also renames the existing libv4l-largefile.patch
to libv4l-01-largefile.patch in order to comply with the Buildroot
patch naming scheme, and guarantee the order in which patches are
applied.

Fixes:

  http://autobuild.buildroot.org/results/ed6/ed66792e332ee0256a17f98cbe21dfcfe6e8743b/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libsepol: really fix static library build

In commit 52eeb04c7608b9675bd8c2d57d3a4d1373ee72ad ('libsepol: fix
static-only library build') I forgot to git add the changes made to
the libsepol.mk file itself. Those changes are needed to actually pass
STATIC=<something> when building static libraries only.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

manual/faq: add section about why no binary packages

It comes up every now and then on the list, so better be prepared to
point at the manual, rather than rehash the same every time.

Most of the chapter is a copy-paste of the report from the Buildroot
Developpers Day in Pragues, 2011-10-28:
    http://lists.busybox.net/pipermail/buildroot/2011-November/047229.html

We consider the opinions expressed in that report to be still valid
now, two years later.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Samuel Martin <s.martin49@gmail.com>
Cc: Peter Korsgaard <jacmet@uclibc.org>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Danomi Manchego <danomimanchego123@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

opencv: add missing indirect dependency from gstreamer

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libplayer: add missing indirect dependency from gstreamer

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

xscreensaver: add missing indirect dependencies from libgtk2

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libsepol: fix static-only library build

Add a patch that improves the libsepol build system to support
static-only library build.

Fixes:

  http://autobuild.buildroot.org/results/30c/30cb919d2bbf51bfdf0a83c618124d927d046a61/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

icu: not available when BR2_BINFMT_FLAT is used

icu does not recognize 'uclinux' as a supported platform. While making
it recognize uclinux is easy, there is another problem down the road:
icu does very weird things to generate an ELF library containing
static data (libicudata.a), and the generated library being ELF, it is
not compatible with the FLAT binary format expected by uclinux
platforms such as Blackfin in FLAT format.

Therefore, we simply disallow the selection of icu on FLAT
platforms.

Note that adding a dependency on BR2_BINFMT_ELF doesn't work, because
BR2_BINFMT_FDPIC is considered to be separate (even if technically
FDPIC is a derivative of ELF). That's why the dependency we're adding
is "depends on !BR2_BINFMT_FLAT" and not "depends on BR2_BINFMT_ELF".

Fixes:

  http://autobuild.buildroot.org/results/b41/b415fed7fae4012bad7d8b53a481bd71bdab716f/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Update for 2014.02-rc2

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

webkit: disable on < ARMv5t

webkit needs the ARM blx instruction, which is only available on >=
ARMv5t, so we have to make sure the webkit package cannot be enabled
on < ARMv5t. In order to achieve this, this commit introduces the
BR2_PACKAGE_WEBKIT_ARCH_SUPPORTS hidden Config.in knob, which avoids
duplicating all over the place the complex architecture dependencies
of webkit.

Fixes:

  http://autobuild.buildroot.org/results/fdf/fdf8bc7660ac251792d0542d2729ea22753d3789/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

libvncserver: needs mmu

Fixes http://autobuild.buildroot.net/results/30e/30e6a879ab6d84df4688c3d29761522f68dad9fc/

fork() is only used in VNCommand.c, so it seems doable to patch the sources
(and send upstream) to make it work on !mmu if people are interested.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

lvm2: disable static builds

When BR2_PREFER_STATIC_LIB is defined it still try to build the shared
executables and it fails.

Fixes:
http://autobuild.buildroot.net/results/b0b/b0b386969459dda9c294f1ccb4927ca225fa6bdd/

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

thrift: fixes compilation issues

Apply upstreamed patches:
https://issues.apache.org/jira/browse/THRIFT-2229
https://issues.apache.org/jira/browse/THRIFT-2367

Fixes:
http://autobuild.buildroot.net/results/efb/efbbae54b5a16b26cac7fcc69ea99bb6f8661fe8/build-end.log
http://autobuild.buildroot.net/results/f83/f837440fdf8b3bddfc6cc548902a0453640fa6b4/build-end.log

[Romain: patch 05 rebased on top of thrift-0.9.1]
Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

dropbear: bump version

Fixes a number of issues. From the changelog:

- Avoid getting stuck in a loop writing huge key files, reported by Bruno
  Thomsen
- Avoid crash on exit due to cleaned up keys before last packets are sent,
  debugged by Ronald Wahl
- Fix a race condition in rekeying where Dropbear would exit if it received a
  still-in-flight packet after initiating rekeying. Reported by Oliver Metz.
  This is a longstanding bug but is triggered more easily since 2013.57
- Ensure that generated RSA keys are always exactly the length
  requested. Previously Dropbear always generated N+16 or N+15 bit keys.
  Thanks to Unit 193
- Fix DROPBEAR_CLI_IMMEDIATE_AUTH mode which saves a network round trip if the
  first public key succeeds. Still not enabled by default, needs more
  compatibility testing with other implementations.
- Fix signal handlers so that errno is saved, thanks to Erik Ahlén for a patch
  and Mark Wickham for independently spotting the same problem.

And at the same time get rid of the TIMEVAL_TO_TIMESPEC as dropbear provides a
fallback implementation if not available (and has done so since 2006).

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux: bump to version 3.13.3

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux-headers: bump 3.{2,4,10,12,13}.x stable versions

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux-headers: remove unused 3.3.8 patch

3.3.8 support is removed since 334dca61 (kernel-headers: remove deprecated
versions 3.1, 3.3, 3.5), so let's get rid of the patch as well.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

mplayer: add missing reverse dependencies for nios2 and sh2a

Propagate to comment and libplayer unsupported platforms bfin and sh2a.

Fixes:
http://autobuild.buildroot.net/results/5d8/5d80ade791319b6a66ac1c342f7b1d25c023f0af/

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

mplayer: remove sh2 support

Remove a leftover of the commit commit e543f5a10488b020bb4ccb03e6de0e455c64841a
(arch: remove sh2, sh3 and sh3eb support).

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

mplayer: not available on bfin

Fixes:
http://autobuild.buildroot.net/results/109/109b7c9b575c7362c4982a908a1e3695e7590ebd/

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

host python/python3: conditionally disable unicodedata

The host python always had --disable-unicodedata, regardless of the
corresponding configuration option BR2_PACKAGE_PYTHON_UNICODEDATA.
Since the host python is used to byte-compile python modules, this meant
that such modules could not contain unicode strings. For example, following
statement in a python module:
    print u"\N{SOLIDUS}"

would cause the byte-compilation to fail with message:
    SyntaxError: ("(unicode error) \\N escapes not supported (can't load
    unicodedata module)",

Instead, conditionally disable unicodedata based on
BR2_PACKAGE_PYTHON_UNICODEDATA, also for the host python.

This fixes bug #6542 (https://bugs.busybox.net/show_bug.cgi?id=6542)

Reported-by: Gernot Vormayr <gvormayr@gmail.com>
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

kexec: fix zImage probe

Add upstream patch to fix probe of zImage kernels.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

transmission: fix uTP enabled build with ccache

Transmission would incorrectly determine the C++ compiler when ccache is
enabled, causing a build with uTP to fail at the configure step.
This patch adds a patch against transmission, fixing the problem.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

qtuio: correct install-target/staging when Qt library type is 'static'

If BR2_PACKAGE_QT_STATIC is set, qtuio will not build a .so file, but .a.
However, the custom INSTALL_TARGET_CMDS and INSTALL_STAGING_CMDS
unconditionally attempted to copy the .so file.

This commit checks the requested Qt library type and copies the right
library for each case, taking into account that the static .a file does not
need to be copied to the target directory.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

vlc: explicitly disable opencv support

vlc can use opencv in video filters, but it requires a couple of
features enabled in opencv; so, simply force disabling opencv support.

Note that vlc does includes the legacy opencv/cv.h header, which pulls a
number of opencv's features (core, video, imgproc, ...).

Fixes:
  http://autobuild.buildroot.org/results/39c/39c77ffb5a5599d0b09422433c747b2bac185c4f/
  http://autobuild.buildroot.org/results/a79/a79b055da09e4d8ede263251df8461bc8a64569a/

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

beaglebone: add DT for BeagleBone Black

The devicetree data for BeagleBone Black is the am335x–boneblack.dts file
(includes "am33xx.dtsi" and "am335x-bone-common.dtsi")

BeagleBone White uses the am335x-bone.dts file.

Signed-off-by: Marcelo Gutiérrez <kuyurix@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

vlc: needs dependency on host-lua if Lua is selected

If Lua support is requested in VLC, its configure script tries to find the
luac byte compiler, which fails if host-lua is not yet built.

This can be easily reproduced by setting a minimal config with vlc and Lua
enabled, and running: 'make clean toolchain vlc'. Final output is:

checking for LUA... no
configure: WARNING: Package lua5.2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `lua5.2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'lua5.2' found, trying lua 5.1 instead
checking for LUA... no
configure: WARNING: Package lua5.1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `lua5.1.pc'
to the PKG_CONFIG_PATH environment variable
No package 'lua5.1' found, trying lua >= 5.1 instead
checking for LUA... yes
checking for luac... no
configure: error: Could not find the LUA byte compiler.
make: *** [<buildroot>/output/build/vlc-2.1.2/.stamp_configured] Error 1

Fix this problem by setting host-lua as a dependency to vlc.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

opencv: always enable opencv_core module when opencv is enabled

It does not make much sense enabling opencv without its core module.

This configuration leads to build nothing (since all modules depend on
the core one), but install the configuration files (*.pc and *.cmake)
anyway.

This absurd situation may break the build-system of other packages
that would correctly find the *.pc (but does not check for the modules
they actually use), but would not build because of missing headers and
libraries.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

jimtcl: don't attempt to handle ccache internally

jimtcl tries to use 'ccache' (a non-buildroot host version) which may not
exist on the host system. If ccache is enabled in buildroot, the compiler
used by jimtcl is:
ccache <buildroot>/.../ccache <buildroot>/.../<tuple>-gcc

If ccache is not present on the host, this results in the build error:

ccache <buildroot>/.../ccache <buildroot>/.../<tuple>-gcc
-D_GNU_SOURCE -Wall  -I. -fpic -pipe -Os    -c -o jim-subcmd.o jim-subcmd.c
make[1]: ccache: Command not found

This patch passes 'CCACHE=none' to the 'configure' script, disabling the
internal handling of ccache, so that ccache can be transparently passed
through CC.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

imagemagick: needs mmu

Fixes:
http://autobuild.buildroot.net/results/d2f/d2f673b71f771ab5a6435805e39338fd023f04c8/build-end.log

The complete log file says:
libMagickCore-6.Q16.so: undefined reference to `_fork'

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

feh: needs mmu

Fixes http://autobuild.buildroot.net/results/8f4/8f447412460e404aa723242dd8281b40317a017b/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

collectd: fix static linking

collectd-tg indirectly uses pthread, but forgets to link with -pthread.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

netsnmp: fix static linking with openssl

Fixes http://autobuild.buildroot.net/results/084/0845bde5d234bd00d23c7a1b7e18746882dcdde4/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

uclibc: copy config file from configure iso patch step

The three typical packages that use .config files in buildroot copy the
config file at different times in the build process:

    busybox copies its .config from the post-extract hook.
    linux copies its .config in the configure_cmds.
    uclibc copies its .config from the post-patch hook.

Copying the .config file from the configure step is the only way to properly
support an OVERRIDE_SRCDIR that does not yet have the .config file, because
the extract and patch steps are skipped in that case.

In a previous patch, the situation was already fixed for busybox. This patch
applies the same fix to uclibc: copy the config file from the configure
step, as linux is doing.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

busybox: copy config file from configure iso extract step

The three typical packages that use .config files in buildroot copy the
config file at different times in the build process:

    busybox copies its .config from the post-extract hook.
    linux copies its .config in the configure_cmds.
    uclibc copies its .config from the post-patch hook.

Copying the .config file from the configure step is the only way to properly
support an OVERRIDE_SRCDIR that does not yet have the .config file, because
the extract and patch steps are skipped in that case.

For example, when setting a BUSYBOX_OVERRIDE_SRCDIR to a cleanly extracted
busybox tarball:

$ make busybox-dirclean busybox
rm -Rf [..]/output/build/busybox-custom
>>> busybox custom Syncing from source dir
>>> /home/tdescham/repo/contrib/busybox-1.21.1
rsync -au --exclude .svn --exclude .git --exclude .hg --exclude .bzr
            --exclude CVS /home/tdescham/repo/contrib/busybox-1.21.1/
            [..]/output/build/busybox-custom
>>> busybox custom Configuring
/bin/sed -i -e "/\\<CONFIG_NOMMU\\>/d"
                            [..]/output/build/busybox-custom/.config
/bin/sed: can't read [..]/output/build/busybox-custom/.config:
                                            No such file or directory
make: *** [[..]/output/build/busybox-custom/.stamp_configured] Error 2

This patch modifies busybox.mk to copy the config file from the configure
step instead, as linux is doing, and fixing the described scenario.

This fixes bug #5030: https://bugs.busybox.net/show_bug.cgi?id=5030

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/web: give a little bit more exposure to our Google+ page

Add a small icon that links the Buildroot home page to our Google+
page.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>