[FFmpeg-user] cross compilation of ffmpeg, targetting WIndows: libbluray can not be found

[Moritz Barsnick]

On Wed, May 29, 2019 at 16:28:00 +0200, Vincent Torri wrote:
> > IMO, this indicates that libbluray.pc was not found.
>
> normally, when pkg-config fails, it displays a message, like :
>
> $ pkg-config --modversion foo
> Package foo was not found in the pkg-config search path.
> Perhaps you should add the directory containing `foo.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'foo' found
>
> if libbluray.pc is not found, is it normal that config.log has no such message ?

You're right.

What ffmpeg's configure does here is
  test_cmd $pkg_config --exists --print-errors $pkg_version || return
which is basically
  pkg-config --exists --print-errors libbluray

After that succeeds, it determines the CFLAGS and LIBS (silently), and
then:
  check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@"
which tries to compile and link a program with the given includes and
functions, in libbluray's case libbluray/bluray.h and bd_open(). But if
it did that, the log would say so, with something like:
  test_ld cc
  test_cc
  BEGIN /tmp/ffconf.TaEECP0n/test.c
which it doesn't here. So the former apparently fails.

I could tell easier if I was on your system. ;-)

Cheers,
Moritz