Building with make leaves out CMake files

[MarcusCalhoun-Lopez]

Is your feature request related to a problem? Please describe. The MacPorts project builds zstd using make. There are various reasons, not the least of which is that, according to the README.md file, "make is the officially maintained build system of this project." However, the CMake files of zstd are installed if and only if zstd is built with CMake (not make). This is a problem since the CMake files of minizip-ng require the CMake files of zstd to be installed.

Describe the solution you'd like Is there any way to install the CMake files of zstd using only make?

Describe alternatives you've considered There is pull request that attempts to install zstd (via make) and its CMake files (via cmake) separately. However, this is a less than ideal solution.

Additional context