Some pthreads symbols might be present in libc (as shown on various *BSD)
but not all of them, leading to false positives.

Check for the most common compiler flags before the plain symbol check
to avoid known pitfalls.

There are alternate implementations of those libraries that use pthreads.

This long-deprecated code should disappear at the next version bump.

This enables a more C99-compliant implementation of printf et al.

The MinGW32 project is deprecating its old version macros.

The flag is not unconditionally added to CFLAGS either and the
programs built on the host do not get habitually fed to a debugger.

This fixes decoding, broken since 7e350379.

This is similar to what was done for the normal mp3 decoder in
f4a86bc9.
Signed-off-by: Martin Storsjö <martin@martin.st>

Some ACTi cameras fail if "*" is passed as the URI.
Signed-off-by: Ismael Luceno <ismael.luceno@corp.bluecherry.net>
Signed-off-by: Martin Storsjö <martin@martin.st>

Also bump libavcodec micro and add an APIchanges entry saying that
av_frame_* should now be used instead of the lavc AVFrame functions.

This is a temporary workaround to allow deprecating
avcodec_get_frame_defaults(). The proper solution will be using a
properly allocated AVFrame in Picture.

avcodec_decode_audio4() resets the frame itself.

avcodec_decode_*() resets the frame itself.

This is a temporary workaround to allow deprecating
avcodec_get_frame_defaults(). The proper solution will be using a
properly allocated AVFrame in Picture.

ff_mpeg_unref_picture() already resets the frame.

avcodec_decode_audio4() will reset the frame itself.

avcodec_get_frame_defaults() will be deprecated.

Strictly speaking it is not correct to call it on refcounted frames, in
any case it is unnecessary, since filtered_frame is always unreferenced
after poll_filter() returns.

av_frame_free() should be used instead.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

This enables a more POSIX-compliant printf implementation, that
allows using length modifiers like 'z'.

Fix writing over the end

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Addresses: CVE-2013-0845

It was incorrectly moved in c869fcde.

Simplifies host/target libc detection splitting.