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This disables V4L2 completely.

This reverts commit 5740099f.
This caused autoconf errors and besides I still do not agree.

(I do not know why it was removed in the first place though - not me!
 As a consequence, we cannot scan TV channels in VLC >= 2.0...)

Clarify what ./compile does

V4L2_FIELD_INTERLACED_BT was introduced in v2.6.25-3581-g26d507f
Check for headers from last supported kernel

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

same rationale as in 679830ea

$enable_speex can't be empty at this point so this check makes no sense

Building the iomx version of the omxil module itself doesn't
require the private headers any longer, they're only necessary
when building the iomx wrapper code (which should be built by the
NDK makefile instead).
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This reverts commit 4e03fb4f.

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Define _WIN32_WINNT to 0x600 when checking/using dxva2 headers
Continue to use a lower version to retain XP compatibility for the rest of VLC

Should close #5609

And drop libxml dependency

No functionnal change

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

This fixes issues on X.6 and X.7 when compiled with SDK10.5
The configure would fail to see -crt10.6 library and die on poll()
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Do not leak -lncursesw in LIBS

only error out if asked with --enable-skins2

Use our own check which also recognizes static inline functions

Don't use ac_cv_search cached value because it could contain
"no" or "none required" which aren't valid link flags

AC_CHECK_LIB(main, xxx) did not exactly search for main symbol, it
searched for the presence of the library.
Instead we look for a required symbol.

We don't use e.g. pthread_mutex_lock because some pthread symbols
are available in glibc, but not all.

Not finding pthread library is not an error, because at least OS/2 and
symbian don't need it. (We skip the check on Windows already)

You should use them like this:
- modify *FLAGS and LIBS globally
- use VLC_SAVE_FLAGS to push the variables
- modify the variables for the tests
- use VLC_RESTORE_FLAGS when you're done to pop the variables