Build - set macOS deployment target to 12

Author: samaaron

Diff for: app/CMakeLists.txt

@@ -18,7 +18,7 @@ option(WITH_QT_GUI_WEBENGINE "Include experimental webengine functionality" OFF)
 set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT ${PROJECT_NAME})
 
 if(APPLE)
-  set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15")
+  set(CMAKE_OSX_DEPLOYMENT_TARGET "12")
 endif()
 
 set(APP_ROOT ${CMAKE_CURRENT_LIST_DIR})

Diff for: app/external/CMakeLists.txt

@@ -18,7 +18,7 @@ message(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
 include(GNUInstallDirs)
 include(ExternalProject)
 
-set(CMAKE_OSX_DEPLOYMENT_TARGET "13")
+set(CMAKE_OSX_DEPLOYMENT_TARGET "12")
 
 # sp_midi
 ExternalProject_Add(sp_midi

Diff for: app/gui/qt/CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.2)
 message(STATUS "CMakeLists: Sonic Pi Qt GUI")
 
 if(APPLE)
-  set(CMAKE_OSX_DEPLOYMENT_TARGET "13")
+  set(CMAKE_OSX_DEPLOYMENT_TARGET "12")
 endif()
 
 project("Sonic Pi"