Consistent with other cases for these tests, we opt not to add the target to check-all if they're known to fail. The tests fail when cross compiling for a different architecture because the host Python3_EXECUTABLE is used to run them, and FFI calls will of course fail against the libraries compiled for the target. Do note that CMAKE_CROSSCOMPILING is set to true whenever CMAKE_SYSTEM_NAME was set manually <https://cmake.org/cmake/help/latest/variable/CMAKE_CROSSCOMPILING.html> so in some circumstances it may be set even when not cross-compiling. However, it's the best way of checking that CMake has right now, and we use it elsewhere in LLVM's build system.
//===----------------------------------------------------------------------===//
// Clang Python Bindings
//===----------------------------------------------------------------------===//
This directory implements Python bindings for Clang.
You may need to set CLANG_LIBRARY_PATH so that the Clang library can be
found. The unit tests are designed to be run with any standard test
runner. For example:
--
$ env PYTHONPATH=$(echo ~/llvm/clang/bindings/python/) \
CLANG_LIBRARY_PATH=$(llvm-config --libdir) \
python3 -m unittest discover -v
tests.cindex.test_index.test_create ... ok
...
OK
--