xcb-utils are not needed anymore.

Matches the x11grab screen capture by features.

This allows writing most code as if they always are is available.

These are ok to use from other libraries even though it's not a
public header, since they only provide an inline declaration, and
doesn't add an actual dependency on lavu internals. (This can be
considered more a build system compatibility fallback than a
libavutil feature.)
Signed-off-by: Martin Storsjö <martin@martin.st>

This silences warnings about passing arguments from incompatible pointer type
when targeting Windows Vista or newer.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>

This is needed for clock_gettime.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Support musl out of box.

Amend commit 9d2cee52 that got
wrongly merged in its stead.

Non-standard compliant libc should be supported on a per-case basis
anyway.

HOSTCPPFLAGS and HOSTCFLAGS are only set in config.mak.
Signed-off-by: Martin Storsjö <martin@martin.st>

These are the only WMA bits shared with binkaudio. Splitting them off
reduces the binnkaudio dependency on general WMA code.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This option facilitates testing shared libarary builds: for instance
fate builders do no longer need to set LD_LIBRARY_PATH as the binaries will
get the right search paths hardcoded into their executable file.

This option is only meant to be used for testing purposes: The installed
libraries must not move around in the file system, and doing so will
cause a lot of subtle problems. For more information why using RPATH is
dangerous, please refer to

https://blog.flameeyes.eu/2010/06/the-why-and-how-of-rpath

Since they are aliases for ogg enabling any of them enables ogg as well.

The same is done for GCC and clang already.

On mingw64 with c++11 support, the link libraries do contain a
nanosleep function, while it isn't exposed via the headers. Using
check_func_headers instead of a plain check_func fixes this
misdetection.
Signed-off-by: Martin Storsjö <martin@martin.st>

The -MD option (for enabling a dynamically linked crt) gets interpreted
as a cpp option for generating dependency information (into a file named
'-.d', when preprocessing to a pipe). We shouldn't be passing
any and all C compiler flags to armasm (which is a plain assembler,
only with cpp bolted on via gas-preprocessor), but these are the
main conflicting ones.
Signed-off-by: Martin Storsjö <martin@martin.st>

Older versions don't support all the features we test for now.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

Standalone GNU assembly is not used on x86.

This tries to find the most expressive part of the output of
armcc --vsn to include, giving a compiler identification of
"ARM Compiler 5.04 update 2 (build 82)" instead of just
"ARM Compiler 5.04" for armcc 5.0.

4.x versions of armcc output the following, for "armcc --vsn":
ARM C/C++ Compiler, RVCT4.0 [Build 925]
For evaluation purposes only
Software supplied by: ARM Limited

ARM C/C++ Compiler, 4.1 [Build 894]
For evaluation purposes only
Software supplied by: ARM Limited

5.0 versions output this:
Product: ARM Compiler 5.04
Component: ARM Compiler 5.04 update 2 (build 82)
Tool: armcc [5040081]
For evaluation purposes only
Software supplied by: ARM Limited
Signed-off-by: Martin Storsjö <martin@martin.st>

llvm's integrated assembler supports the AArch64 asm on darwin since
August 2014. So check $as first before using gas-preprocessor.pl via
$gas. Makes the checks specific for that the architecture specific asm
needs. PPC Altivec and AArch64 needs on ':vararg' for macro arguments.
Arm needs in addition the '.altmacro' directive.

Initialise VC1DSPContext for parser as well as for decoder.
Note, the VC-1 code doesn't actually use the function pointer yet.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This permits re-use with parsers for codecs which use similar start codes.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Icecast is basically a convenience wrapper around the HTTP protocol.
Signed-off-by: Martin Storsjö <martin@martin.st>

Distributors and integrators nowadays have less problems by leveraging
pkg-config files than having to set custom CFLAGS and LDFLAGS.

Check for an instruction that causes the (very old) Apple GCC 4.2
to error out ("unrecognizable insn").
Signed-off-by: Martin Storsjö <martin@martin.st>

The options is useful to build position-independent executables on
hardened systems (e.g. Android L and Gentoo Hardened).

The library does not have external dependencies.

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