Fix fat universal (arm64 + x86_64) macos Github Actions build (#2567)

* test if clang supports multiple targets

* didnt work, so trying lipo to join separate targets together

* add CUSTOM_LDFLAGS to try to fix arm64 mac dynamic build

* fix sym links

* try again to fix sym links

* auto extract raylib version numbers from makefile

* fix macos missing gnu grep

* dont use custom name for raylib dlls

.github/workflows/macos.yml

@@ -49,22 +49,42 @@ jobs:
    
     # Generating static + shared library, note that i386 architecture is deprecated
     # Defining GL_SILENCE_DEPRECATION because OpenGL is deprecated on macOS
-    # TODO: Support Universal ARCH libraries (build arm64 + x86_64 and merge)
     - name: Build Library
       run: |
         cd src
         clang --version
-        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=STATIC RAYLIB_RELEASE_PATH="../build/${{ env.RELEASE_NAME }}/lib" CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION" -B
-        # make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=STATIC RAYLIB_LIB_NAME=raylib_x86_64 CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION"
-        # make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=STATIC RAYLIB_LIB_NAME=raylib_arm64 CUSTOM_CFLAGS="-target arm64-apple-macos11 -DGL_SILENCE_DEPRECATION" -B
-        # lipo -create -output ../build/${{ env.RELEASE_NAME }}/lib/libraylib.a libraylib_x86_64.a libraylib_arm64.a
+        
+        # Extract version numbers from Makefile
+        brew install grep
+        RAYLIB_API_VERSION=`ggrep -Po 'RAYLIB_API_VERSION\s*=\s\K(.*)' Makefile`
+        RAYLIB_VERSION=`ggrep -Po 'RAYLIB_VERSION\s*=\s\K(.*)' Makefile`
+        
+        # Build raylib x86_64 static
+        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=STATIC CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION"
+        mv libraylib.a /tmp/libraylib_x86_64.a
         make clean
-        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=SHARED RAYLIB_RELEASE_PATH="../build/${{ env.RELEASE_NAME }}/lib" CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION" -B
-        # make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=SHARED RAYLIB_LIB_NAME=raylib_x86_64 CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION" -B
-        # make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=SHARED RAYLIB_LIB_NAME=raylib_arm64 CUSTOM_CFLAGS="-target i686-apple-macos -DGL_SILENCE_DEPRECATION" -B
-        # lipo -create -output ../build/${{ env.RELEASE_NAME }}/lib/libraylib.3.1.0.dylib libraylib_x86_64.3.1.0.dylib libraylib_arm64.3.1.0.dylib
-        # cp -v ./libraylib_arm64.dylib ../build/${{ env.RELEASE_NAME }}/lib/libraylib.dylib
-        # cp -v ./libraylib_arm64.310.dylib ../build/${{ env.RELEASE_NAME }}/lib/libraylib.310.dylib
+        
+        # Build raylib arm64 static
+        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=STATIC CUSTOM_CFLAGS="-target arm64-apple-macos11 -DGL_SILENCE_DEPRECATION" -B
+        mv libraylib.a /tmp/libraylib_arm64.a
+        make clean
+        
+        # Join x86_64 and arm64 static
+        lipo -create -output ../build/${{ env.RELEASE_NAME }}/lib/libraylib.a /tmp/libraylib_x86_64.a /tmp/libraylib_arm64.a
+        
+        # Build raylib x86_64 dynamic
+        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=SHARED CUSTOM_CFLAGS="-target x86_64-apple-macos10.12 -DGL_SILENCE_DEPRECATION" CUSTOM_LDFLAGS="-target x86_64-apple-macos10.12" -B
+        mv libraylib.${RAYLIB_VERSION}.dylib /tmp/libraylib_x86_64.${RAYLIB_VERSION}.dylib
+        make clean
+        
+        # Build raylib arm64 dynamic
+        make PLATFORM=PLATFORM_DESKTOP RAYLIB_LIBTYPE=SHARED CUSTOM_CFLAGS="-target arm64-apple-macos11 -DGL_SILENCE_DEPRECATION" CUSTOM_LDFLAGS="-target arm64-apple-macos11" -B
+        mv libraylib.${RAYLIB_VERSION}.dylib /tmp/libraylib_arm64.${RAYLIB_VERSION}.dylib
+        
+        # Join x86_64 and arm64 dynamic
+        lipo -create -output ../build/${{ env.RELEASE_NAME }}/lib/libraylib.${RAYLIB_VERSION}.dylib /tmp/libraylib_x86_64.${RAYLIB_VERSION}.dylib /tmp/libraylib_arm64.${RAYLIB_VERSION}.dylib
+        ln -sv libraylib.${RAYLIB_VERSION}.dylib  ../build/${{ env.RELEASE_NAME }}/lib/libraylib.dylib
+        ln -sv libraylib.${RAYLIB_VERSION}.dylib  ../build/${{ env.RELEASE_NAME }}/lib/libraylib.${RAYLIB_API_VERSION}.dylib
         cd ..
   
     - name: Generate Artifacts

src/Makefile

@@ -452,7 +452,7 @@ endif
 # Define library paths containing required libs: LDFLAGS
 # NOTE: This is only required for dynamic library generation
 #------------------------------------------------------------------------------------------------
-LDFLAGS = -L. -L$(RAYLIB_RELEASE_PATH)
+LDFLAGS = $(CUSTOM_LDFLAGS) -L. -L$(RAYLIB_RELEASE_PATH)
 
 ifeq ($(PLATFORM),PLATFORM_DESKTOP)
     ifeq ($(PLATFORM_OS),WINDOWS)