When azmq is build as a child project using add_directory command in parent CMakeLists.txt then child CMakeLists.txt in azmq folder sets CMAKE_MODULE_PATH relative to the folder where parent CMakeLists.txt resides. As a result discovery of ZeroMQ libraries fails.
Using CMAKE_CURRENT_SOURCE_DIR to set CMAKE_MODULE_PATH removes that problem.
When azmq is build as a child project using
add_directorycommand in parentCMakeLists.txtthen childCMakeLists.txtinazmqfolder setsCMAKE_MODULE_PATHrelative to the folder where parentCMakeLists.txtresides. As a result discovery of ZeroMQ libraries fails. UsingCMAKE_CURRENT_SOURCE_DIRto setCMAKE_MODULE_PATHremoves that problem.