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>
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>
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 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-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-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>
Merge remote-tracking branch 'mirror/master'