Added platform option MAC_UNIVERSAL

Author: DctrNoob

README.md

@@ -43,6 +43,7 @@ Tested with the following combinations:
 * _SIMULATOR_WATCHOS_ - to build for watchOS Simulator (i386)
 * _MAC_ - to build for macOS (x86_64)
 * _MAC_ARM64_ - to build for macOS on Apple Silicon (arm64)
+* _MAC_UNIVERSAL_ - to build for macOS on x86_64 and Apple Silicon (arm64) combined
 * _MAC_CATALYST_ - to build iOS for Mac (Catalyst, x86_64)
 * _MAC_CATALYST_ARM64_ - to build iOS for Mac on Apple Silicon (Catalyst, arm64)
 

ios.toolchain.cmake

@@ -70,6 +70,7 @@
 #    SIMULATOR_WATCHOS = Build for x86_64 for watchOS Simulator.
 #    MAC = Build for x86_64 macOS.
 #    MAC_ARM64 = Build for Apple Silicon macOS.
+#    MAC_UNIVERSAL = Combined build for x86_64 and Apple Silicon on macOS.
 #    MAC_CATALYST = Build for x86_64 macOS with Catalyst support (iOS toolchain on macOS).
 #                   Note: The build argument "MACOSX_DEPLOYMENT_TARGET" can be used to control min-version of macOS
 #    MAC_CATALYST_ARM64 = Build for Apple Silicon macOS with Catalyst support (iOS toolchain on macOS).
@@ -111,6 +112,7 @@
 #    SIMULATOR_WATCHOS = x86_64 (i386 has since long been deprecated)
 #    MAC = x86_64
 #    MAC_ARM64 = arm64
+#    MAC_UNIVERSAL = x86_64 arm64
 #    MAC_CATALYST = x86_64
 #    MAC_CATALYST_ARM64 = arm64
 #
@@ -154,7 +156,7 @@ list(APPEND _supported_platforms
         "OS" "OS64" "OS64COMBINED" "SIMULATOR" "SIMULATOR64" "SIMULATORARM64"
         "TVOS" "TVOSCOMBINED" "SIMULATOR_TVOS"
         "WATCHOS" "WATCHOSCOMBINED" "SIMULATOR_WATCHOS"
-        "MAC" "MAC_ARM64"
+        "MAC" "MAC_ARM64" "MAC_UNIVERSAL"
         "MAC_CATALYST" "MAC_CATALYST_ARM64")
 
 # Cache what generator is used
@@ -219,7 +221,7 @@ if("${contains_PLATFORM}" EQUAL "-1")
 endif()
 
 # Check if Apple Silicon is supported
-if(PLATFORM MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$" AND ${CMAKE_VERSION} VERSION_LESS "3.19.5")
+if(PLATFORM MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$|^(MAC_UNIVERSAL)$" AND ${CMAKE_VERSION} VERSION_LESS "3.19.5")
   message(FATAL_ERROR "Apple Silicon builds requires a minimum of CMake 3.19.5")
 endif()
 
@@ -258,6 +260,9 @@ if(NOT DEFINED DEPLOYMENT_TARGET)
   elseif(PLATFORM STREQUAL "MAC_ARM64")
     # Unless specified, SDK version 11.0 (Big Sur) is used by default as minimum target version (macos on arm).
     set(DEPLOYMENT_TARGET "11.0")
+  elseif(PLATFORM STREQUAL "MAC_UNIVERSAL")
+    # Unless specified, SDK version 11.0 (Big Sur) is used by default as minimum target version for universal builds.
+    set(DEPLOYMENT_TARGET "11.0")
   elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")
     # Unless specified, SDK version 13.0 is used by default as minimum target version (mac catalyst minimum requirement).
     set(DEPLOYMENT_TARGET "13.1")
@@ -459,6 +464,13 @@ elseif(PLATFORM_INT MATCHES "^(MAC_ARM64)$|^(MAC_CATALYST_ARM64)$")
   elseif(PLATFORM_INT STREQUAL "MAC_CATALYST_ARM64")
     set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-ios${DEPLOYMENT_TARGET}-macabi)
   endif()
+elseif(PLATFORM_INT STREQUAL "MAC_UNIVERSAL")
+  set(SDK_NAME macosx)
+  if(NOT ARCHS)
+    set(ARCHS "x86_64;arm64")
+  endif()
+  string(REPLACE ";" "-" ARCHS_SPLIT "${ARCHS}")
+  set(APPLE_TARGET_TRIPLE_INT ${ARCHS_SPLIT}-apple-macosx${DEPLOYMENT_TARGET})
 else()
   message(FATAL_ERROR "Invalid PLATFORM: ${PLATFORM_INT}")
 endif()
@@ -658,7 +670,7 @@ endif()
 set(CMAKE_SYSTEM_VERSION ${SDK_VERSION} CACHE INTERNAL "")
 set(UNIX ON CACHE BOOL "")
 set(APPLE ON CACHE BOOL "")
-if(PLATFORM STREQUAL "MAC" OR PLATFORM STREQUAL "MAC_ARM64")
+if(PLATFORM STREQUAL "MAC" OR PLATFORM STREQUAL "MAC_ARM64" OR PLATFORM STREQUAL "MAC_UNIVERSAL")
   set(IOS OFF CACHE BOOL "")
   set(MACOS ON CACHE BOOL "")
 elseif(PLATFORM STREQUAL "MAC_CATALYST" OR PLATFORM STREQUAL "MAC_CATALYST_ARM64")