Revert "directfb: add support for davinci gfx driver"

This reverts commit df39ffe7f437f62d7c0eb6d73bdb86b2d09a8c8a.

It's broken and Arnout no longer has the hardware to fix/test.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
ext-tool.mk: fix SUPPORT_LIB_DIR calculation for toolchains without libstdc++

SUPPORT_LIB_DIR would get resolved to the main buildroot directory for
external toolchains without C++ support, as:

 - gcc -print-file-name=<nonexisting-file> returns <nonexisting-file>
 - readlink -f <nonexisting-file> returns $PWD/<nonexisting-file>

So fix it by ensuring output of gcc -print-file-name actually exists
before using it.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
dnsmasq: host-pkg-config is needed for lua support as well

Fixes http://autobuild.buildroot.org/results/94d67f02c81639e1586d1c21a7e3b183a6ab50a2

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
toolchain/crosstool-NG: disable decimal floats

Decimal floats were introduced circa gcc-4.2 or -4.3, and requires
the floating-point environement fenv.h in the C library.

The uClibc .config file used by crosstool-NG to build uClibc is the
same as used by the internal buildroot mechanism, and explcitly
disables fenv support.

The quick workaround is to simply disable decimal floats in all
crosstool-NG config files.

In the long run, it might be better to check this situation, and/or
add code and/or options in crosstool-NG to handle this (but it is
much more involved, and this workaround is sane).

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
opencv: add zlib dependency

The opencv package selects zlib, but it does not depend on it. This
leads to cases where opencv gets built before zlib, and in this case,
opencv uses its internal version of zlib, which doesn't build properly
(it has some conditional code for ARM that is probably broken), see:

  http://autobuild.buildroot.org/results/45f4e195fe0cc5acace10287f5ff33aa953d5430/build-end.log

We fix this by properly adding the opencv dependency on zlib.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
apr: requires shared library support

The apr library requires shared library support unconditionally, so
make it depend on !BR2_PREFER_STATIC_LIB, so that architectures that
support static libraries only do not make this package available.

Solves
http://autobuild.buildroot.org/results/f4cd9751e85e9ee7fde2e9479e0f01ab2be93e84/build-end.log.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
socat: fix build failure due to ext2_fs.h header, bump version

In kernel >= 3.3, the ext2_fs.h can no longer be imported from
userspace. This has been fixed for internal toolchains by adding a
patch to kernel headers, but this doesn't work with toolchains
generated by Crosstool-NG, or potentially upcoming external
toolchains.

socat in fact has a test in its configure.in, but the configure was
generated too long ago, and the generated test relies on the
preprocessor result and not the compiler result (but warns that in the
future, the compiler result will be used instead of the preprocessor
result).

So, by running autoconf on this package, we fix the problem: it
properly checks whether ext2_fs is usable or not, and acts
accordingly. Of course, it means that with recent versions of the
kernel, ext2-specific features of socat are unavailable, and we'll
have to wait for the socat developers to adapt their code so that they
use the e2fsprogs headers.

We also bump the version, since a new minor version fixing a security
problem has been released.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
socat: disable documentation build/installation

The documentation generation process requires a special yold2man
program, for which we don't have a package in Buildroot. Since we
generally don't care much about documentation of packages, just adjust
the package Makefile.in to not build/install its documentation.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
docs/news.html: add 2012.05-rc1 announcement link

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
ccache: allow dynamic selection of cache directory

The existing ccache infrastructure sets the cache directory hardcoded in the
ccache binary. As this directory was set to ~/.buildroot-ccache, the cache
is not necessarily local (e.g. in corporate environments the home directories
may be mounted over NFS.)
Previous versions of buildroot did allow to set the cache directory, but this
was also hardcoded (so you had to rebuild ccache to change it), plus that
support was removed.
See http://lists.busybox.net/pipermail/buildroot/2011-July/044511.html for
a discussion on this.

This patch modifies ccache to respect a new shell variable (exported from
the Makefile, based on a configuration option) instead of CCACHE_DIR.
The name CCACHE_DIR itself is already used by autotargets for the ccache
package.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>