Update cmakelist.txt file to support compiling in ESP IDF

Author: kel30a

CMakeLists.txt

@@ -1,28 +1,42 @@
 cmake_minimum_required(VERSION 3.16)
 
-# set the project name
-project(arduino_helix)
+if (DEFINED ESP_PLATFORM)
+  # idf component
+  idf_component_register(
+      SRC_DIRS src src/utils src/libhelix-aac src/libhelix-mp3
+      INCLUDE_DIRS src src/utils src/libhelix-aac src/libhelix-mp3
+      REQUIRES arduino-esp32
+  )
 
-# lots of warnings and all warnings as errors
-## add_compile_options(-Wall -Wextra )
-set(CMAKE_CXX_STANDARD 17)
+  target_compile_options(${COMPONENT_LIB} INTERFACE -Wno-error -Wno-format)
+  target_compile_options(${COMPONENT_LIB} PRIVATE -DUSE_DEFAULT_STDLIB)
+  add_compile_definitions(ESP32)
+else()
 
-option(MP3_EXAMPLES "build examples" OFF)
+  # set the project name
+  project(arduino_helix)
 
-file(GLOB_RECURSE SRC_LIST_C CONFIGURE_DEPENDS  "${PROJECT_SOURCE_DIR}/src/*.c" )
-file(GLOB_RECURSE SRC_LIST_CPP CONFIGURE_DEPENDS  "${PROJECT_SOURCE_DIR}/src/*.cpp" )
+  # lots of warnings and all warnings as errors
+  ## add_compile_options(-Wall -Wextra )
+  set(CMAKE_CXX_STANDARD 17)
 
-# define libraries
-add_library (arduino_helix ${SRC_LIST_C} ${SRC_LIST_CPP})
+  option(MP3_EXAMPLES "build examples" OFF)
 
-# prevent compile errors
-target_compile_options(arduino_helix PRIVATE -DUSE_DEFAULT_STDLIB)
+  file(GLOB_RECURSE SRC_LIST_C CONFIGURE_DEPENDS  "${PROJECT_SOURCE_DIR}/src/*.c" )
+  file(GLOB_RECURSE SRC_LIST_CPP CONFIGURE_DEPENDS  "${PROJECT_SOURCE_DIR}/src/*.cpp" )
 
-# define location for header files
-target_include_directories(arduino_helix PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_SOURCE_DIR}/src/libhelix-mp3 ${CMAKE_CURRENT_SOURCE_DIR}/src/libhelix-aac )
+  # define libraries
+  add_library (arduino_helix ${SRC_LIST_C} ${SRC_LIST_CPP})
 
-# build examples
-if(MP3_EXAMPLES)
-  add_subdirectory( "${CMAKE_CURRENT_SOURCE_DIR}/examples/output_mp3")
-  add_subdirectory( "${CMAKE_CURRENT_SOURCE_DIR}/examples/output_aac")
+  # prevent compile errors
+  target_compile_options(arduino_helix PRIVATE -DUSE_DEFAULT_STDLIB)
+
+  # define location for header files
+  target_include_directories(arduino_helix PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_SOURCE_DIR}/src/libhelix-mp3 ${CMAKE_CURRENT_SOURCE_DIR}/src/libhelix-aac )
+
+  # build examples
+  if(MP3_EXAMPLES)
+    add_subdirectory( "${CMAKE_CURRENT_SOURCE_DIR}/examples/output_mp3")
+    add_subdirectory( "${CMAKE_CURRENT_SOURCE_DIR}/examples/output_aac")
+  endif()
 endif()