#86 "make check" fails on missing @LIBAVUTIL_LIBS@ definition

[Lew]

minidlna-1.3.3
gnu make 4.1
ffmpeg 4.2.2

install fails at "make check" with
gcc: error: @LIBAVUTIL_LIBS@: No such file or directory
Makefile:589: recipe for target 'testupnpdescgen' failed
configure script does not set @LIBAVUTIL_LIBS@ even though ffmpeg libavutil
detected and LIBAVFORMAT_LIBS properly set to include it

Workaround is to delete Makefile line 462 and "make check"

15:03:54 $ grep -n -B 5 -A 5 LIBAVUTIL_LIBS Makefile
457-testupnpdescgen_LDADD = \
458- -ljpeg \
459- -lid3tag -lz \
460- -lsqlite3 \
461- -lavformat -lavcodec -lavutil -lz \
462: @LIBAVUTIL_LIBS@ \
463- -lexif \
464- -lFLAC $(flacogglibs) $(vorbislibs) $(avahilibs)
465-
466-SUFFIXES = .tmpl .
467-GENERATED_FILES = \