[   18s] [ 68%] Building CXX object src/CMakeFiles/mediastreamer2.dir/utils/mkv_reader.cpp.o
[   18s] cd /home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/build/src && /usr/bin/c++ -DBCTBX_LOG_DOMAIN=\"mediastreamer\" -DHAVE_CONFIG_H -DMS2_EXPORTS -DMS2_FILTERS -DMS2_INTERNAL -DQRCODE_ENABLED -DVIDEO_ENABLED -D_TRUE_TIME -Dmediastreamer2_EXPORTS -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/include/OpenGL -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/include -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/src/audiofilters -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/src/utils -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/src/voip -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/build -I/home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/build/src -isystem /usr/include/ffmpeg -x c++ -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -g -fcommon -Wno-implicit-function-declaration -O2 -g -DNDEBUG -std=c++17 -fPIC  -Wall -Wuninitialized -Wno-error=deprecated-copy -Wno-format-truncation -Wno-error=stringop-truncation -Wno-cast-function-type -MD -MT src/CMakeFiles/mediastreamer2.dir/utils/mkv_reader.cpp.o -MF CMakeFiles/mediastreamer2.dir/utils/mkv_reader.cpp.o.d -o CMakeFiles/mediastreamer2.dir/utils/mkv_reader.cpp.o -c /home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/src/utils/mkv_reader.cpp
[   18s] cc1plus: warning: command-line option ‘-Wno-implicit-function-declaration’ is valid for C/ObjC but not for C++
[   18s] /home/abuild/rpmbuild/BUILD/mediastreamer2-5.3.37/src/utils/mkv_reader.cpp:32:10: fatal error: matroska/matroska.h: No such file or directory
[   18s]    32 | #include <matroska/matroska.h>
[   18s]       |          ^~~~~~~~~~~~~~~~~~~~~
[   18s] compilation terminated.
[   18s] make[2]: *** [src/CMakeFiles/mediastreamer2.dir/build.make:1717: src/CMakeFiles/mediastreamer2.dir/utils/mkv_reader.cpp.o] Error 1