(macOS) Add ARM 64bit MacOS support

.gitlab-ci.yml

@@ -32,6 +32,10 @@ include:
   # MacOS 64-bit
   - project: 'libretro-infrastructure/ci-templates'
     file: '/osx-x64.yml'
+
+  # MacOS ARM 64-bit
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/osx-arm64.yml'
     
   ################################## CELLULAR ################################
   # Android
@@ -103,6 +107,12 @@ libretro-build-osx-x64:
   extends:
     - .libretro-osx-x64-make-default
     - .core-defs
+
+# MacOS ARM 64-bit
+libretro-build-osx-arm64:
+  extends:
+    - .libretro-osx-arm64-make-default
+    - .core-defs
     
 ################################### CELLULAR #################################
 # Android ARMv7a

Makefile

@@ -20,6 +20,9 @@ ifeq ($(platform),)
    else ifneq ($(findstring Darwin,$(shell uname -a)),)
       platform = osx
       arch = intel
+      ifeq ($(shell uname -p),arm)
+         arch = arm
+      endif
       ifeq ($(shell uname -p),powerpc)
          arch = ppc
       endif
@@ -46,11 +49,6 @@ ifneq ($(GIT_VERSION)," unknown")
    CXXFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
 endif
 
-arch = intel
-ifeq ($(shell uname -p),powerpc)
-   arch = ppc
-endif
-
 # Unix
 ifneq (,$(findstring unix,$(platform)))
    TARGET := $(TARGET_NAME)_libretro.so
@@ -94,9 +92,33 @@ else ifeq ($(platform), osx)
       ENDIANNESS_DEFINES := -DMSB_FIRST -DBYTE_ORDER=BIG_ENDIAN
       OLD_GCC := 1
    endif
+
    OSXVER = `sw_vers -productVersion | cut -d. -f 2`
    OSX_LT_MAVERICKS = `(( $(OSXVER) <= 9)) && echo "YES"`
-   fpic += -mmacosx-version-min=10.9
+   MINVERSION=
+   ifeq ($(OSX_LT_MAVERICKS),YES)
+   else
+   MINVERSION = -mmacosx-version-min=10.9
+   endif
+
+   arch = intel
+   ifeq ($(shell uname -p),powerpc)
+	arch = ppc
+   endif
+   ifeq ($(shell uname -p),arm)
+	arch = arm
+	MINVERSION =
+   endif
+
+   ifeq ($(CROSS_COMPILE),1)
+		TARGET_RULE   = -target $(LIBRETRO_APPLE_PLATFORM) -isysroot $(LIBRETRO_APPLE_ISYSROOT)
+		CFLAGS   += $(TARGET_RULE)
+		CPPFLAGS += $(TARGET_RULE)
+		CXXFLAGS += $(TARGET_RULE)
+		LDFLAGS  += $(TARGET_RULE)
+   endif
+
+   fpic += $(MINVERSION)
 
 # iOS
 else ifneq (,$(findstring ios,$(platform)))