I had a small MSVC x64 project using the template library inja, just to check that I could work with it in a larger project. It used find_package to locate where cget installed the inja package. To do that I set CMAKE_PREFIX_PATH to the cget directory. I set up the same project to also build using clang-cl x64 and the ninja build tool. However, to allow it to find inja I had to set inja_DIR; it seemed to ignore CMAKE_PREFIX_DIR. I am wondering if anyone could explain why that is, or suggest how I might investigate. The project is here: GitHub - coder451/cmake-find-inja: Small project using inja with cmake.
Note: If NO_DEFAULT_PATH is specified all NO_* options are enabled.
Without NO_DEFAULT_PATH it fails in the same way after looking in various irrelevant places.
Thanks for that. Running with it showed me what was going on. But it looks like this is a Heisenbug - today the two builds are behaving the same. Sorry for the noise.