https://issues.guix.gnu.org/issue/69554

Also, isn’t ‘BUILD_TESTING’ a convention rather than a flag CMake always
honors?

Yes, it's more like a convention, as the patch says: "Anyhow, the CMakeLists.txt needs to implement handling this flag."

Do you want the text in the documentation to be more verbose on this?

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |