Exporting

There are three ways to access a project from another project: subdirectory, exported build directories, and installing. To use the build directory of one project in another project, you will need to export targets. Exporting targets is needed for a proper install; allowing the build directory to be used is just two added lines. It is not generally a way to work that I would recommend, but can be useful for development and as way to prepare the installation procedure discussed later.

This puts the targets you have listed into a file in the build directory, and optionally prefixes them with a namespace. Now, to allow CMake to find this package, export the package into the folder:

Note that there’s a downside: if you have imported dependencies, they will need to be imported before you find_package. That will be fixed in the next method.