in addition to packages installed by blds/bld_prepare.sh I installed apt install git apt install mc rsync just convenience for me ===== apt install lv2-dev apt install libsratom-dev apt install libsuil-dev apt install liblilv-dev === ffmpeg 6, 7 or 8 should do === apt install libavcodec-dev apt install libavformat-dev apt install libavfilter-dev ====== apt install liba52-dev apt install libtwolame-dev apt install libdv-dev apt install libmp3lame-dev apt install libavc1394-dev apt install libiec61883-dev May be we should add them to new script ? (shared builds were not a thing back in the day ..) Otherwise it now builds with --with-single-user --without-thirdparty --without-libdpx but on 2-way SMP virtual machine (qemu 9.0.something), with 2 Gb of ram. May be more cores and more ram expose some race condition in thirdparty build ?