KDE already has a meta-build tool for C++ called Craft, which handles dependency management and cross - compilation for CMake-built applications and libraries.

AFAIK, Craft is only the most popular tool to build KDE software on (or perhaps for) Windows. On Linux, it's kdesrc-build (OG, Perl) or kde-builder (more recent, Python).

The problem is that the website says they are still working out the logistics details. If the company has been around for 2 years they should have figured that out and updated the page by now.