CMake User Applications selection

Use CMake's configure_file() functionality to generate the list of User Applications.

All the apps included in current versions of InfiniTime are enabled by default, but this can now be overridden by setting variables ENABLE_APP_XXX to True or False.

CMake CMP0140 is set to NEW to enable the return PROPAGATE functionality.

CMakeLists.txt

@@ -13,8 +13,8 @@ set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-
 set(NRF_TARGET "nrf52")
+cmake_policy(SET CMP0140 NEW)
 
 if (NOT ARM_NONE_EABI_TOOLCHAIN_PATH)
   message(FATAL_ERROR "The path to the toolchain (arm-none-eabi) must be specified on the command line (add -DARM_NONE_EABI_TOOLCHAIN_PATH=<path>")
@@ -35,6 +35,19 @@ endif()
 set(TARGET_DEVICE "PINETIME" CACHE STRING "Target device")
 set_property(CACHE TARGET_DEVICE PROPERTY STRINGS PINETIME MOY_TFK5 MOY_TIN5 MOY_TON5 MOY_UNK)
 
+option(ENABLE_APP_STOPWATCH "Enable the Stopwatch application" True)
+option(ENABLE_APP_ALARM "Enable the Alarm application" True)
+option(ENABLE_APP_TIMER "Enable the Timer application" True)
+option(ENABLE_APP_STEPS "Enable the Steps application" True)
+option(ENABLE_APP_HEARTRATE "Enable the HeartRate application" True)
+option(ENABLE_APP_MUSIC "Enable the Music application" True)
+option(ENABLE_APP_PAINT "Enable the Paint application" True)
+option(ENABLE_APP_PADDLE "Enable the Paddle game" True)
+option(ENABLE_APP_TWOS "Enable the Twos game" True)
+option(ENABLE_APP_METRONOME "Enable the Metronome application" True)
+option(ENABLE_APP_NAVIGATION "Enable the Navigation application" True)
+option(ENABLE_APP_MOTION "Enable the Motion application" False)
+
 set(PROJECT_GIT_COMMIT_HASH "")
 
 execute_process(COMMAND git rev-parse --short HEAD
@@ -70,5 +83,28 @@ set(VERSION_EDIT_WARNING "// Do not edit this file, it is automatically generate
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/Version.h.in ${CMAKE_CURRENT_BINARY_DIR}/src/Version.h)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/docker/post_build.sh.in ${CMAKE_CURRENT_BINARY_DIR}/post_build.sh)
 
+function(AddToListIfEnabled list enabled type)
+  if(${enabled})
+    list(APPEND ${list} ${type})
+  endif ()
+  return(PROPAGATE ${list})
+endfunction()
+
+# Generate the list of user apps to be compiled into the firmware
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_STOPWATCH} "Apps::StopWatch")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_ALARM} "Apps::Alarm")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_TIMER} "Apps::Timer")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_STEPS} "Apps::Steps")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_HEARTRATE} "Apps::HeartRate")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_MUSIC} "Apps::Music")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_PAINT} "Apps::Paint")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_PADDLE} "Apps::Paddle")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_TWOS} "Apps::Twos")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_METRONOME} "Apps::Metronome")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_NAVIGATION} "Apps::Navigation")
+AddToListIfEnabled(USERAPP_TYPES_LIST ${ENABLE_APP_MOTION} "Apps::Motion")
+
+list(JOIN USERAPP_TYPES_LIST "," USERAPP_TYPES)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/displayapp/Apps.h.in ${CMAKE_CURRENT_BINARY_DIR}/src/displayapp/Apps.h)
 
 add_subdirectory(src)

src/displayapp/Apps.h.in

@@ -63,6 +63,8 @@ namespace Pinetime {
       static constexpr size_t Count = sizeof...(As);
     };
 
+    using UserAppTypes = TypeList<@USERAPP_TYPES@>;
+
     template <WatchFace... Ws>
     struct WatchFaceTypeList {
       static constexpr size_t Count = sizeof...(Ws);

src/displayapp/UserApps.h

@@ -1,5 +1,5 @@
 #pragma once
-#include "Apps.h"
+#include "displayapp/Apps.h"
 #include "Controllers.h"
 
 #include "displayapp/screens/Alarm.h"