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Verifying the architectures during compiler identification is redundant, and requires a lot more up-front information than we should need. It also causes unsupported architectures to break the compiler id and version detection, so the resulting output from CMake does not report the compiler version, which is useful information to know why the specified architectures are not supported. The "detecting compiler ABI info" and "check for working compiler" steps already pass `CMAKE_CUDA_ARCHITECTURES` into their test projects. Therefore we can just drop the earlier architecture testing. Bad architectures will be reported as a not-working compiler, and the output will include the compiler's error message. This reverts the approach from: * commit19cc5bc296(CUDA: Throw error if user-specified architectures don't work, 2020-05-26, v3.18.0-rc1~79^2) * commit650c1029a0(CUDA: Detect non-working user-specified architectures on NVCC, 2020-05-28, v3.18.0-rc1~51^2) * commit01428c5560(CUDA: Fail fast if CMAKE_CUDA_ARCHITECTURES doesn't work during detection, 2020-08-29, v3.19.0-rc1~241^2). Their goal was in part to avoid waiting until the test for working compiler to detect unsupported architectures. However, experience has shown that failing earlier is more trouble than it's worth. Fixes: #23161 Issue: #20756
CMake Tests Directory ********************* This directory contains the CMake test suite. See also the `CMake Source Code Guide`_. .. _`CMake Source Code Guide`: ../Help/dev/source.rst Many tests exist as immediate subdirectories, but some tests are organized as follows. * ``CMakeLib/``: Source code, used for tests, that links to the ``CMakeLib`` library defined over in ``Source/``. * ``CMakeOnly/``: Deprecated. Tests that run CMake to generate a project but not build it. Superseded by ``Tests/RunCMake/``. * ``Find*/``: Tests for specific find modules that can only be run on machines with the corresponding packages installed. They are enabled in ``CMakeLists.txt`` by undocumented options used on CI builds. * ``Module/``: Tests for specific CMake modules. * ``RunCMake/``: Tests that run CMake and/or other tools while precisely checking their return code and stdout/stderr content. Useful for testing error cases and diagnostic output.