ZeroMQ (4.2.4+) has cmake find_package support upstream
first tag upstream with the config input to cmake is v4.2.4 Config.cmake.in from v4.2.4 src tree
it would be nice to not have to go the pkg-conf route to get the dependencies when using cmake as build tool since alpine is packaging v4.3.4 for AL-3.17. Config.cmake.in from v4.3.4 src tree
this would probably require to swap the build tool to cmake and not use autoconf anymore in the build script.