From 2bc93184511921abda938790a4bdd1d2ea8e06ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Fran=C3=A7ois=20Milants?= <jf@codingfield.com>
Date: Sun, 17 Dec 2023 16:34:00 +0100
Subject: [PATCH] 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                       | 38 +++++++++++++++++++++++++++-
 src/displayapp/{Apps.h => Apps.h.in} |  2 ++
 src/displayapp/UserApps.h            |  2 +-
 3 files changed, 40 insertions(+), 2 deletions(-)
 rename src/displayapp/{Apps.h => Apps.h.in} (97%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ae6b1c5e..0c890870 100644
--- a/CMakeLists.txt
+++ b/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)
diff --git a/src/displayapp/Apps.h b/src/displayapp/Apps.h.in
similarity index 97%
rename from src/displayapp/Apps.h
rename to src/displayapp/Apps.h.in
index ebd8bf78..23ad12a3 100644
--- a/src/displayapp/Apps.h
+++ b/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);
diff --git a/src/displayapp/UserApps.h b/src/displayapp/UserApps.h
index cb6d5779..985b335f 100644
--- a/src/displayapp/UserApps.h
+++ b/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"