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Craig Scott
0cc1b550dd
The file(MAKE_DIRECTORY) implementation checks whether a path is allowed to be written to before it checks if it already exists. For the scenario where a SOURCE_DIR is an existing directory within the main project's source directory, this triggers a fatal error if CMAKE_DISABLE_SOURCE_CHANGES is set to true for ExternalProject, and some FetchContent scenarios. Therefore, add an explicit check for existence first to avoid making such error-triggering calls. Fixes: #21872
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 Superseded by ``Tests/RunCMake/``.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. See `RunCMake/README.rst`_. .. _`RunCMake/README.rst`: RunCMake/README.rst