[mlir] Only build mlir-cpu-runner when the native arch is targeted

mlir-cpu-runner has a dependency on ExecutionEngine which is only built for the native arch. So currently mlir-cpu-runner does not link correctly when the native arch is not targeted.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D118422

Author: sstamenova

mlir/tools/CMakeLists.txt

@@ -1,4 +1,3 @@
-add_subdirectory(mlir-cpu-runner)
 add_subdirectory(mlir-lsp-server)
 add_subdirectory(mlir-opt)
 add_subdirectory(mlir-pdll)
@@ -7,3 +6,9 @@ add_subdirectory(mlir-shlib)
 add_subdirectory(mlir-spirv-cpu-runner)
 add_subdirectory(mlir-translate)
 add_subdirectory(mlir-vulkan-runner)
+
+# mlir-cpu-runner requires ExecutionEngine which is only built
+# when the native target is configured in.
+if(TARGET ${LLVM_NATIVE_ARCH})
+  add_subdirectory(mlir-cpu-runner)
+endif()