feat: add macOS Universal Binary build support

- Add cross-compilation files and build script for macOS arm64/x86_64

Author: JoMinSeo

cross/macos_arm64.txt

@@ -0,0 +1,23 @@
+# build for macOS Apple Silicon
+
+[binaries]
+cpp = ['clang++', '-arch', 'arm64', '-isysroot', '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk']
+ar = 'ar'
+strip = 'strip'
+
+[properties]
+root = '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer'
+has_function_printf = true
+
+[built-in options]
+cpp_args = ['-mmacosx-version-min=10.14']
+cpp_link_args = ['-mmacosx-version-min=10.14']
+
+[host_machine]
+system = 'darwin'
+subsystem = 'macos'
+kernel = 'xnu'
+cpu_family = 'aarch64'
+cpu = 'aarch64'
+endian = 'little'
+

cross/macos_x86_64.txt

@@ -0,0 +1,23 @@
+# build for macOS Intel
+
+[binaries]
+cpp = ['clang++', '-arch', 'x86_64', '-isysroot', '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk']
+ar = 'ar'
+strip = 'strip'
+
+[properties]
+root = '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer'
+has_function_printf = true
+
+[built-in options]
+cpp_args = ['-mmacosx-version-min=10.14']
+cpp_link_args = ['-mmacosx-version-min=10.14']
+
+[host_machine]
+system = 'darwin'
+subsystem = 'macos'
+kernel = 'xnu'
+cpu_family = 'x86_64'
+cpu = 'x86_64'
+endian = 'little'
+

lottie/flutter_build.macos.sh

@@ -6,32 +6,30 @@ rm -rf build_flutter_macos
 rm -rf build_flutter_aarch64 libthorvg.a
 mkdir build_flutter_aarch64
 
-cd ../thorvg
-meson setup -Db_lto=true -Ddefault_library=static -Dloaders="lottie, png, jpg" -Dthreads=false --cross-file ../thorvg/cross/macos_arm64.txt ../lottie/build_flutter_aarch64
+meson setup -Db_lto=true -Ddefault_library=static -Dloaders="lottie, png, jpg" -Dthreads=false --cross-file ../cross/macos_arm64.txt ../thorvg build_flutter_aarch64
 
 cd ../lottie
 ninja -C build_flutter_aarch64
 
 cp build_flutter_aarch64/src/libthorvg.a libthorvg.a
 rm -rf build_flutter_aarch64/
 
-meson setup -Db_lto=true -Ddefault_library=static --cross-file ../thorvg/cross/macos_arm64.txt build_flutter_aarch64
+meson setup -Db_lto=true -Ddefault_library=static --cross-file ../cross/macos_arm64.txt build_flutter_aarch64
 ninja -C build_flutter_aarch64/
 
 # Build for x86_64 (Intel)
 rm -rf build_flutter_x86_64 libthorvg.a
 mkdir build_flutter_x86_64
 
-cd ../thorvg
-meson setup -Db_lto=true -Ddefault_library=static -Dloaders="lottie, png, jpg" -Dthreads=false --cross-file ../thorvg/cross/macos_x86_64.txt ../lottie/build_flutter_x86_64
+meson setup -Db_lto=true -Ddefault_library=static -Dloaders="lottie, png, jpg" -Dthreads=false --cross-file ../cross/macos_x86_64.txt ../thorvg build_flutter_x86_64
 
 cd ../lottie
 ninja -C build_flutter_x86_64
 
 cp build_flutter_x86_64/src/libthorvg.a libthorvg.a
 rm -rf build_flutter_x86_64/
 
-meson setup -Db_lto=true -Ddefault_library=static --cross-file ../thorvg/cross/macos_x86_64.txt build_flutter_x86_64
+meson setup -Db_lto=true -Ddefault_library=static --cross-file ../cross/macos_x86_64.txt build_flutter_x86_64
 ninja -C build_flutter_x86_64/
 
 rm -rf libthorvg.a
@@ -44,4 +42,4 @@ build_flutter_aarch64/libthorvg.dylib \
 -output build_flutter_macos/libthorvg.dylib -create
 
 mkdir -p ../macos/Frameworks
-cp build_flutter_macos/libthorvg.dylib ../macos/Frameworks/
+cp build_flutter_macos/libthorvg.dylib ../macos/Frameworks/