Add DESKTOP_APP_MAC_ARCH for separate macOS builds.

init_target.cmake

@@ -53,3 +53,11 @@ function(init_target target_name) # init_target(my_target folder_name)
         )
     endif()
 endfunction()
+
+# This code is not supposed to run on build machine, only on target machine.
+function(init_non_host_target target_name)
+    init_target(${target_name})
+    set_target_properties(${target_name} PROPERTIES
+        OSX_ARCHITECTURES "${DESKTOP_APP_MAC_ARCH}"
+    )
+endfunction()

validate_special_target.cmake

@@ -15,7 +15,9 @@ function(report_bad_special_target)
 endfunction()
 
 set(CMAKE_OSX_DEPLOYMENT_TARGET 10.12 CACHE STRING "Minimum macOS deployment version" FORCE)
-if (NOT DESKTOP_APP_QT6)
+if (DESKTOP_APP_QT6)
+    set(CMAKE_OSX_ARCHITECTURES "x86_64;arm64" CACHE STRING "Target macOS architectures" FORCE)
+else()
     set(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "Target macOS architectures" FORCE)
 endif()
 

variables.cmake

@@ -32,6 +32,7 @@ option(DESKTOP_APP_DISABLE_AUTOUPDATE "Disable autoupdate." ${disable_autoupdate
 option(DESKTOP_APP_USE_HUNSPELL_ONLY "Disable system spellchecker and use bundled Hunspell only. (For debugging purposes)" OFF)
 option(DESKTOP_APP_USE_ENCHANT "Use Enchant instead of bundled Hunspell. (Linux only)" OFF)
 option(DESKTOP_APP_NO_PDB "Disable PDB file generation. (Windows only)" OFF)
+set(DESKTOP_APP_MAC_ARCH "x86_64;arm64" CACHE STRING "Target macOS arch. (macOS only)")
 
 set(dont_bundle_fonts 0)
 if (DESKTOP_APP_USE_PACKAGED AND NOT DESKTOP_APP_USE_PACKAGED_LAZY)