cmake find_package(Systemd) examples

FluidSynth/fluidsynth CMakeLists.txt :631 

find_package ( Systemd )

nghttp2/nghttp2 CMakeLists.txt :103 

find_package(Systemd 209)

qbittorrent/qBittorrent dist/unix/CMakeLists.txt :3 

find_package(Systemd)