Error when building for linux

I think cmake tries to find a folder that just doesnt exist

In the photo it shows the error and the contents of the folder downloaded. tests is not there

[game-difficulty]

The normal Linux build does not require the _test sources, but the CMake config was still trying to register adaptive_index_test, which caused the error when tests/test_adaptive_index.cpp was not included in the source package.
I’ve adjusted the build config so tests are disabled by default. For manual builds, please use -DNATIVE_BUILD_TESTS=OFF, or simply run ./build_linux.sh.