MLIR Dependency Support

[theoparis]

I noticed that the meson build system supports dependency('llvm') but not dependency('mlir'). Is this something that can be supported in the future? Currently I think I'd have to manually link against mlir libraries and specify paths to the include directories somehow, since llvm-config doesn't support linking against MLIR. Additionally, I'm not sure how mlir-tblgen would work.

[dcbaker]

MLIR does provide cmake detection support, so in theory you could do dependency('MLIR', method : 'cmake') (possibly with components defined as well), unless the MLIR CMake is as ugly and unweidy as the LLVM cmake.