1 files changed, 26 insertions, 0 deletions
diff --git a/cmake/modules/CrossCompileLLVM.cmake b/cmake/modules/CrossCompileLLVM.cmake
new file mode 100644
index 0000000000000..f638d67a30d1a
--- /dev/null
+++ b/cmake/modules/CrossCompileLLVM.cmake
@@ -0,0 +1,26 @@
+
+if( ${LLVM_TABLEGEN} STREQUAL "tblgen" )
+  set(CX_NATIVE_TG_DIR "${CMAKE_BINARY_DIR}/native")
+  set(LLVM_TABLEGEN "${CX_NATIVE_TG_DIR}/bin/tblgen")
+
+  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${CX_NATIVE_TG_DIR}
+    COMMENT "Creating ${CX_NATIVE_TG_DIR}...")
+
+  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}/CMakeCache.txt
+    COMMAND ${CMAKE_COMMAND} -UMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=Release ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
+    DEPENDS ${CX_NATIVE_TG_DIR}
+    COMMENT "Configuring native TableGen...")
+
+  add_custom_command(OUTPUT ${LLVM_TABLEGEN}
+    COMMAND ${CMAKE_BUILD_TOOL}
+    DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt
+    WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}/utils/TableGen
+    COMMENT "Building native TableGen...")
+  add_custom_target(NativeTableGen DEPENDS ${LLVM_TABLEGEN})
+
+  add_dependencies(tblgen NativeTableGen)
+
+  set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CX_NATIVE_TG_DIR})
+endif()