create macro

Author: jathu

CMakeLists.txt

@@ -44,6 +44,14 @@
 
 cmake_minimum_required(VERSION 3.24)
 project(executorch)
+
+# MARK: - Start EXECUTORCH_H12025_BUILD_MIGRATION --------------------------------------------------
+
+include(${PROJECT_SOURCE_DIR}/tools/cmake/common/preset.cmake)
+include(${PROJECT_SOURCE_DIR}/tools/cmake/preset/default.cmake)
+
+# MARK: - End EXECUTORCH_H12025_BUILD_MIGRATION ----------------------------------------------------
+
 include(tools/cmake/Utils.cmake)
 include(CMakeDependentOption)
 
@@ -96,9 +104,6 @@ set(EXECUTORCH_PAL_DEFAULT
           "Which PAL default implementation to use: one of {posix, minimal}"
 )
 
-option(EXECUTORCH_ENABLE_LOGGING "Build with ET_LOG_ENABLED"
-       ${_default_release_disabled_options}
-)
 if(NOT EXECUTORCH_ENABLE_LOGGING)
   # Avoid pulling in the logging strings, which can be large. Note that this
   # will set the compiler flag for all targets in this directory, and for all

tools/cmake/common/preset.cmake

@@ -0,0 +1,25 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+# Enforce config names to always start with EXECUTORCH_, else raise an error.
+function(enforce_executorch_config_name NAME)
+  if(NOT "${NAME}" MATCHES "^EXECUTORCH_")
+    message(FATAL_ERROR "Config name '${NAME}' must start with EXECUTORCH_")
+  endif()
+endfunction()
+
+# Define an overridable config.
+#   1) If the config is already defined in the process, then store that in cache
+#   2) If the config is NOT set, then store the default value in cache
+macro(define_overridable_config NAME DESCRIPTION DEFAULT_VALUE)
+  enforce_executorch_config_name(${NAME})
+
+  if(DEFINED ${NAME})
+    set(${NAME} ${${NAME}} CACHE STRING ${DESCRIPTION} FORCE)
+  else()
+    set(${NAME} ${DEFAULT_VALUE} CACHE STRING ${DESCRIPTION})
+  endif()
+endmacro()

tools/cmake/preset/default.cmake

@@ -0,0 +1,17 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+if(CMAKE_BUILD_TYPE STREQUAL "Release")
+  set(_is_build_type_release ON)
+  set(_is_build_type_debug OFF)
+else()
+  set(_is_build_type_release OFF)
+  set(_is_build_type_debug ON)
+endif()
+
+# MARK: - Definitions
+
+define_overridable_config(EXECUTORCH_ENABLE_LOGGING "Build with ET_LOG_ENABLED" ${_is_build_type_debug})