cmake HAVE_LIBSYSTEMD examples

nghttp2/nghttp2 src/CMakeLists.txt :164 

target_compile_definitions(nghttpx_static PUBLIC HAVE_LIBSYSTEMD)

fluent/fluent-bit lib/nghttp2-1.65.0/src/CMakeLists.txt :163 

target_compile_definitions(nghttpx_static PUBLIC HAVE_LIBSYSTEMD)

TigerVNC/tigervnc CMakeLists.txt :373 

add_definitions(-DHAVE_LIBSYSTEMD)

openthread/ot-br-posix src/agent/CMakeLists.txt :116 

target_compile_definitions(otbr-config INTERFACE "HAVE_LIBSYSTEMD=1")

Tinob/Ishiiruka CMakeLists.txt :753 

add_definitions(-DHAVE_LIBSYSTEMD)