libiec61883 does not install test binaries such as test-mpeg2. I believe these binaries are found within the examples or contrib folder of the source tarball and are built during the main build. These tests are usually required to test for functionality of firewire ports before implementing mythtv. Without these, the user or admin has no way of really knowing if a firewire node is capable of streaming media with the trivial debugging of mythtv unless they are extremely fluent with Mythtv (ie. A Mythtv Developer)!
It does: if use examples then sed -i -e "s:noinst_PROGRAMS.*:noinst_PROGRAMS = :g" \ -e "s:in_PROGRAMS.*:in_PROGRAMS = plugreport plugctl test-amdtp test-dv test-mpeg2 test-plugs:g" \ examples/Makefile.am || die "noinst patching failed" eautoreconf fi you just need the examples USE flag.