Introduce executorch_runtime CMake function

Author: GregoryComer

CMakeLists.txt

@@ -787,5 +787,67 @@ if(EXECUTORCH_BUILD_KERNELS_CUSTOM)
   )
 endif()
 
+function(executorch_runtime target_name)
+  set(options OPTIMIZED QUANTIZED)
+  set(multi_value_args BACKEND EXTENSION)
+
+  cmake_parse_arguments(ETR "${options}" "" "${multi_value_args}" ${ARGN})
+
+  message(STATUS "executorch_runtime: ${target_name}")
+  message(STATUS "ETR_BACKEND: ${ETR_BACKEND}")
+
+  set(runtime_deps executorch)
+
+  # Link backends.
+  foreach(backend IN LISTS ETR_BACKEND)
+    message(STATUS "backend: ${backend}")
+    string(TOLOWER "${backend}" backend_l)
+    message(STATUS "backend_l: ${backend_l}")
+
+    if(backend_l STREQUAL "coreml")
+      list(APPEND runtime_deps coremldelegate)
+    elseif(backend_l STREQUAL "mps")
+      list(APPEND runtime_deps mpsdelegate)
+    elseif(backend_l STREQUAL "qualcomm")
+      list(APPEND runtime_deps qnn_executorch_backend)
+    elseif(backend_l STREQUAL "vulkan")
+      list(APPEND runtime_deps vulkan_backend)
+    elseif(backend_l STREQUAL "xnnpack")
+      list(APPEND runtime_deps xnnpack_backend)
+    else()
+      message(FATAL_ERROR "Unknown backend \"${backend}}\".")
+    endif()
+  endforeach()
+
+  # Link extensions.
+  foreach(extension IN LISTS ETR_EXTENSION)
+    string(TOLOWER "${extension}" extension_l)
+	message(STATUS "Extension ${extension_l}")
+
+    if(extension_l STREQUAL "apple")
+      list(APPEND runtime_deps extension_apple)
+    elseif(extension_l STREQUAL "dataloader")
+      list(APPEND runtime_deps extension_data_loader)
+    elseif(extension_l STREQUAL "module")
+      list(APPEND runtime_deps extension_module)
+    endif()
+  endforeach()
+
+  # Include optimized or portable operator library.
+  if(ETR_OPTIMIZED)
+    list(APPEND runtime_deps optimized_native_cpu_ops_lib)
+  else()
+    list(APPEND runtime_deps portable_ops_lib)
+  endif()
+
+  # Include quantized operator library.
+  if(ETR_QUANTIZED)
+    list(APPEND runtime_deps quantized_ops_lib)
+  endif()
+
+  add_library("${target_name}" INTERFACE)
+  target_link_libraries("${target_name}" INTERFACE "${runtime_deps}")
+endfunction()
+
 # Print all summary
 executorch_print_configuration_summary()

examples/llm_manual/CMakeLists.txt

@@ -10,26 +10,59 @@ project(nanogpt_runner)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
-# Set options for executorch build.
-option(EXECUTORCH_BUILD_EXTENSION_DATA_LOADER "" ON)
-option(EXECUTORCH_BUILD_EXTENSION_MODULE "" ON)
-option(EXECUTORCH_BUILD_KERNELS_OPTIMIZED "" ON)
-option(EXECUTORCH_BUILD_XNNPACK "" ON) # Build with Xnnpack backend
-
 # Include the executorch subdirectory.
 add_subdirectory(
-  ${CMAKE_CURRENT_SOURCE_DIR}/third-party/executorch
+  ${CMAKE_CURRENT_SOURCE_DIR}/../..
   ${CMAKE_BINARY_DIR}/executorch
 )
 
+executorch_runtime(
+    et_runtime
+    BACKEND xnnpack
+    EXTENSION module dataloader
+    OPTIMIZED
+)
+
+if(NOT CMAKE_PROPERTY_LIST)
+    execute_process(COMMAND cmake --help-property-list OUTPUT_VARIABLE CMAKE_PROPERTY_LIST)
+    
+    # Convert command output into a CMake list
+    string(REGEX REPLACE ";" "\\\\;" CMAKE_PROPERTY_LIST "${CMAKE_PROPERTY_LIST}")
+    string(REGEX REPLACE "\n" ";" CMAKE_PROPERTY_LIST "${CMAKE_PROPERTY_LIST}")
+    list(REMOVE_DUPLICATES CMAKE_PROPERTY_LIST)
+endif()
+
+function(print_target_properties target)
+    if(NOT TARGET ${target})
+      message(STATUS "There is no target named '${target}'")
+      return()
+    endif()
+
+    foreach(property ${CMAKE_PROPERTY_LIST})
+        string(REPLACE "<CONFIG>" "${CMAKE_BUILD_TYPE}" property ${property})
+
+        # Fix https://stackoverflow.com/questions/32197663/how-can-i-remove-the-the-location-property-may-not-be-read-from-target-error-i
+        if(property STREQUAL "LOCATION" OR property MATCHES "^LOCATION_" OR property MATCHES "_LOCATION$")
+            continue()
+        endif()
+
+        get_property(was_set TARGET ${target} PROPERTY ${property} SET)
+        if(was_set)
+            get_target_property(value ${target} ${property})
+            message("${target} ${property} = ${value}")
+        endif()
+    endforeach()
+endfunction()
+
+print_target_properties(et_runtime)
+
+get_target_property(include_dirs_temp et_runtime INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
+message(STATUS "include_dirs_temp: ${include_dirs_temp}")
+
 # include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src)
 
 add_executable(nanogpt_runner main.cpp)
 target_link_libraries(
   nanogpt_runner
-  PRIVATE executorch
-          extension_module_static # Provides the Module class
-          optimized_native_cpu_ops_lib # Provides baseline cross-platform
-                                       # kernels
-          xnnpack_backend
+  PRIVATE et_runtime
 ) # Provides the XNNPACK CPU acceleration backend