This cuts some lines from the script as well as the output and
simplifies maintenance.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

The enabled hwaccels are listed later anyway.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Encoders requiring it have the dependency expressed in the
configure.

This is what the OpenBSD porter's manual describes as correct, cf.
http://www.openbsd.org/faq/ports/specialtopics.html#SharedLibs

This allows employing that number in library install commands.

On Cygwin systems MinGW headers can be present if the corresponding
packages have been installed. Since the MinGW libc is checked for
first, this results in newlib getting misdetected as MinGW libc.

It is required for building the shared H.264 code.

Previously PIC was enabled as a magic workaround for binaries that
built fine, but failed to function at all.  This problem no longer
exists, possibly since the introduction of symbol versioning.

Libgsm header can reside either in the base include dir or in
the gsm subdir.

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

These flags are as linker-specific as other LDFLAGS and thus
need to be translated to the correct linker syntax.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Upstream decided to split the paranoia interface and move the headers
accordingly.

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

These warnings have no false positives and point to serious bugs.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Support older libvpx versions.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Martin Storsjö <martin@martin.st>

Snow is a toy codec with no real-world use and horrible code.

MSVC doesn't understand the option, and emits a warning on every
call to cl.exe.

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

Also fixes linking in various configs with only individual parts enabled
because the RTP muxer chaining code depends on the general RTP code,
which is now accounted for.

This option disables all programs, libraries and other parts of Libav
that get built as part of the compilation process.

Also move mpegvideo_select statement to the correct position.

Building avconv without that functionality makes little sense.

Move some functions from dsputil. The idea is that videodsp contains
functions that are useful for a large and varied set of video decoders.
Currently, it contains emulated_edge_mc() and prefetch().

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

This fixes the automatic use of $foo_extralibs when feature foo
is enabled indirectly through a _select or _suggest.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

This allows compiling optimised functions for features not enabled
in the core build and selecting these at runtime if the system has
the necessary support.

Signed-off-by: Mans Rullgard <mans@mansr.com>

This is consistent with usual ARM nomenclature as well as with the
VFPV3 and NEON symbols which both lack the ARM prefix.

Signed-off-by: Mans Rullgard <mans@mansr.com>

This makes --disable-inline-asm work as expected.

Signed-off-by: Mans Rullgard <mans@mansr.com>

This tests instruction set support in both inline and external asm.
If both fail, the base config option is disabled.

Signed-off-by: Mans Rullgard <mans@mansr.com>

The check_insn function tests an instruction in both inline asm and
standalone assembly, and sets _external/_inline config properties
accordingly.

Signed-off-by: Mans Rullgard <mans@mansr.com>

The check_inline_asm function should check the actual C compiler,
not the one used for assembly files.  Usually these are the same,
but they might be different, typically when using a compiler other
than gcc.

The check_as should, as its name suggests, test the type of input
the AS command is used with, i.e. a standalond assembly (.S) file.

Finally, check for gnu assembler using the modified check_as as
this reflects actual usage.

Signed-off-by: Mans Rullgard <mans@mansr.com>