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Do not declare *_sys_t typedefs globally in vlc_common.h. Instead,
declare them locally in each module that provides a definition.

This paves the way to move C++ definitions into anonymous namespaces in
order to respect C++ ODR.

The picture_resource_t and sout_stream_id_sys_t typedefs will be handled
separately, since they require specific additional changes.

See #18033
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

The bswap16, bswap32 and bswap64 functions are already present on NetBSD
and cannot be redefined in include/vlc_common.h as this causes fatal build
errors.

Rename these functions to vlc_bswap16, vlc_bswap32 and vlc_bswap64 and
keep them as they are without fallback to the NetBSD's libc one. These
functions are already small enough and we can bear with them as duplicates
on the gain of no extra ifdefs in the vlc_common.h public header.
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Clang doesn't support this attribute yet.

This removes conflicts with the NetBSD headers and libc.
The conflicts caused fatal build errors.

No functional change intended for other Operating Systems.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Pointed-out-by: KO Myung-Hun <komh78@gmail.com>

Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>

They were already available as of version 3.4.0.

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>

On Windows if you allocate aligned memory you need to free it with an aligned
version of free.

This is similar to the old vlc_memalign() + vlc_free()
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

free() is required by ISO C (hosted) and C++ anyway.

(Name comes Linux kernel. Implementation is from scratch.)

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

According to INSTALL, we require GCC 4.8 already.

Now this works not only on GCC.