Bugzilla Bug 180547

src/tsfile.o: In function `tsfile::tsfile(std::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, inbuffer&, int)':
tsfile.cpp:(.text+0x717): undefined reference to `av_free(void*)'
tsfile.cpp:(.text+0x71c): undefined reference to `avcodec_alloc_context()'
tsfile.cpp:(.text+0x728): undefined reference to
`avcodec_get_context_defaults(AVCodecContext*)'
collect2: ld returned 1 exit status
scons: *** [bin/dvbcut] Error 1
scons: building terminated because of errors.
make: *** [build] Error 2

I'm guessing a too new version of ffmpeg. Probably needs a some dependency
handling.

fixed thanks, extern "C" had been removed from ffmpeg headers when included in
some c++ files.