Once pkg-config is found, CMake will provide two functions to wrap the functionality offered by this program:
- pkg_check_modules, to find all modules (libraries and/or programs) in the passed list
- pkg_search_module, to find the first working module in the passed list
These functions accept the REQUIRED and QUIET arguments, as find_package does. In more detail, our call to pkg_search_module is the following:
pkg_search_module( ZeroMQ REQUIRED libzeromq libzmq lib0mq IMPORTED_TARGET )
Here, the first argument is the prefix that will be used to name the target that is storing the result of the search for the ZeroMQ library: PkgConfig::ZeroMQ. Notice that we need to pass different options for the names of the library on the system: ...
