This allows MSVC 2013 and ICL to build with no external
dependencies.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

The macros forbidding the system functions no longer exist, obviating
the need for the #undefs.

This reverts commit 4622f11f.

The compiler should be able to do the dead code elimination now
without this when the cond_* names point directly to the real
functions instead of to local function pointers.
Signed-off-by: Martin Storsjö <martin@martin.st>

This reduces the call overhead slightly. More noticeably, it
restores the earlier (unintended?) feature that condition variable
functions work just fine even if w32thread_init() hasn't been called.
This was broken as a side effect of 4622f11f, if explicitly targeting
Vista+.

This makes w32threading work in VP8 again, if targeting Vista+.
Signed-off-by: Martin Storsjö <martin@martin.st>

The emulation code is not needed when targetting Vista+
This helps getting rid of CreateSemaphore symbol, which is
forbidden in Windows Store apps.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also fix a comment and an #endif comment.

AIX defines a class() function in its math.h header without any
guard.

It will be used in other places than lavc.

Make sure the behavior does not change with the locale.
Signed-off-by: Martin Storsjö <martin@martin.st>

This adds support for building on Plan 9 x86-32.  The compat/plan9
directory contains these items:

- replacements for the 'head' and 'printf' shell commands
- wrapper for main() to disable FPU exceptions

Larger required changes to the system are described in the
documentation.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The glibc definitions of INFINITY and NAN do not work with the
tms470 compiler, nor do our usual fallbacks.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This conforms to C99, but requires Windows >= XP.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This allows compiling and running these tests on systems lacking a built-
in version of getopt(), such as MSVC.
Signed-off-by: Anton Khirnov <anton@khirnov.net>