Initial work on AUv3 support

README.md

@@ -135,16 +135,16 @@ YUP is usable for experimentation, examples, prototypes, and contributors who ar
 ## Supported Plugin Formats
 |                          | **CLAP**           | **VST3**           | **VST2**           | **AUv3**           | **AUv2**                  | **AAX**               | **LV2**               |
 |--------------------------|:------------------:|:------------------:|:------------------:|:------------------:|:-------------------------:|:---------------------:|:---------------------:|
-| **Windows**              | :white_check_mark: | :white_check_mark: |                    |                    |                           | :construction:        |                       |
-| **macOS**                | :white_check_mark: | :white_check_mark: |                    | :construction:     | :white_check_mark:        | :construction:        |                       |
-| **Linux**                | :construction:     | :construction:     |                    |                    |                           |                       |                       |
+| **Windows**              | :white_check_mark: | :white_check_mark: |                    |                    |                           | :construction:        | :construction:        |
+| **macOS**                | :white_check_mark: | :white_check_mark: |                    | :construction:     | :white_check_mark:        | :construction:        | :construction:        |
+| **Linux**                | :construction:     | :construction:     |                    |                    |                           |                       | :construction:        |
 
 
 ## Supported Plugin Hosting Formats
 |                          | **CLAP**           | **VST3**           | **VST2**           | **AUv3**           | **AUv2**                  | **AAX**               | **LV2**               |
 |--------------------------|:------------------:|:------------------:|:------------------:|:------------------:|:-------------------------:|:---------------------:|:---------------------:|
-| **Windows**              | :construction:     | :construction:     |                    |                    |                           |                       |                       |
-| **macOS**                | :white_check_mark: | :white_check_mark: |                    |                    | :white_check_mark:        |                       |                       |
+| **Windows**              | :white_check_mark: | :white_check_mark: |                    |                    |                           |                       |                       |
+| **macOS**                | :white_check_mark: | :white_check_mark: |                    | :construction:     | :white_check_mark:        |                       |                       |
 | **Linux**                | :construction:     | :construction:     |                    |                    |                           |                       |                       |
 
 

cmake/platforms/mac/AudioPluginInfo_AAX.plist.in

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+	<key>CFBundleGetInfoString</key>
+	<string>${MACOSX_BUNDLE_BUNDLE_VERSION}, Copyright (c) 2026</string>
+	<key>CFBundleIdentifier</key>
+	<string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>@YUP_AUDIO_PLUGIN_BUNDLE_PACKAGE_TYPE@</string>
+	<key>CFBundleShortVersionString</key>
+	<string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
+	<key>CFBundleSignature</key>
+	<string>PTul</string>
+	<key>CFBundleVersion</key>
+	<string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
+	<key>LSMultipleInstancesProhibited</key>
+	<true/>
+	<key>LSPrefersCarbon</key>
+	<false/>
+	<key>NSAppleScriptEnabled</key>
+	<string>No</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

cmake/platforms/mac/AudioUnitV3ContainerInfo.plist.in

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>@auv3_container_bundle_identifier@</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>@PLUGIN_AU_NAME@</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>@PLUGIN_AU_VERSION@</string>
+	<key>CFBundleVersion</key>
+	<string>@PLUGIN_AU_VERSION@</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright (c) 2026 - kunitoki@gmail.com</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+	<key>LSUIElement</key>
+	<true/>
+</dict>
+</plist>

cmake/platforms/mac/AudioUnitV3Info.plist.in

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>@PLUGIN_AU_NAME@</string>
+	<key>CFBundlePackageType</key>
+	<string>XPC!</string>
+	<key>CFBundleShortVersionString</key>
+	<string>@PLUGIN_AU_VERSION@</string>
+	<key>CFBundleVersion</key>
+	<string>@PLUGIN_AU_VERSION@</string>
+	<key>CFBundleSignature</key>
+	<string>@PLUGIN_AU_MANUFACTURER@</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright (c) 2026 - kunitoki@gmail.com</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPrincipalClass</key>
+		<string>YUPAUv3ViewController</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.AudioUnit-UI</string>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionServiceRoleType</key>
+			<string>NSExtensionServiceRoleTypeEditor</string>
+			<key>AudioComponents</key>
+			<array>
+				<dict>
+					<key>type</key>
+					<string>@PLUGIN_AU_TYPE@</string>
+					<key>subtype</key>
+					<string>@PLUGIN_AU_SUBTYPE@</string>
+					<key>manufacturer</key>
+					<string>@PLUGIN_AU_MANUFACTURER@</string>
+					<key>name</key>
+					<string>@PLUGIN_AU_NAME@</string>
+					<key>version</key>
+					<integer>1</integer>
+					<key>sandboxSafe</key>
+					<true/>
+					<key>tags</key>
+					<array>
+						<string>@PLUGIN_AU_TAG@</string>
+					</array>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+</dict>
+</plist>

cmake/platforms/mac/AudioUnitV3_Entitlements.plist

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.device.audio-input</key>
+	<true/>
+	<key>com.apple.security.device.midi</key>
+	<true/>
+</dict>
+</plist>

cmake/plugins/yup_plugin_aax.cmake

@@ -32,6 +32,7 @@ function (_yup_find_aax_sdk)
         set (AAX_SDK_ROOT "$ENV{YUP_AAX_SDK_ROOT}")
     else()
         _yup_message (STATUS "YUP_AAX_SDK_ROOT not set — AAX plugin support disabled")
+        # _yup_message (FATAL_ERROR "YUP_AAX_SDK_ROOT must be set when PLUGIN_CREATE_AAX is enabled")
         return()
     endif()
 
@@ -45,6 +46,9 @@ function (_yup_find_aax_sdk)
     target_include_directories (yup_audio_plugin_client_aaxsdk_headers INTERFACE
         "${AAX_SDK_ROOT}/Interfaces"
         "${AAX_SDK_ROOT}/Interfaces/ACF")
+    target_compile_options (yup_audio_plugin_client_aaxsdk_headers INTERFACE
+        $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Wno-multichar>
+        $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Wno-undef-prefix>)
 
     # --- Build AAXLibrary (static library from SDK sources) ---
     set (AAX_LIBRARY_SOURCE_DIR "${AAX_SDK_ROOT}/Libs/AAXLibrary/source")
@@ -54,27 +58,31 @@ function (_yup_find_aax_sdk)
         file (GLOB_RECURSE AAX_LIBRARY_SOURCES
             "${AAX_LIBRARY_SOURCE_DIR}/*.cpp")
 
+        # AAX_CAutoreleasePool.Win.cpp and .OSX.mm define the same symbols unguarded
         if (YUP_PLATFORM_MAC)
+            file (GLOB_RECURSE AAX_LIBRARY_WIN_SOURCES
+                "${AAX_LIBRARY_SOURCE_DIR}/*.Win.cpp")
+            if (AAX_LIBRARY_WIN_SOURCES)
+                list (REMOVE_ITEM AAX_LIBRARY_SOURCES ${AAX_LIBRARY_WIN_SOURCES})
+            endif()
             file (GLOB_RECURSE AAX_LIBRARY_OBJC_SOURCES
-                "${AAX_LIBRARY_SOURCE_DIR}/*.mm"
-                "${AAX_LIBRARY_SOURCE_DIR}/*.OSX.*")
-            list (APPEND AAX_LIBRARY_SOURCES ${AAX_LIBRARY_OBJC_SOURCES})
-        else()
-            # Exclude macOS-specific files on Windows/Linux
-            file (GLOB_RECURSE AAX_LIBRARY_OSX_SOURCES
-                "${AAX_LIBRARY_SOURCE_DIR}/*_OSX.*"
                 "${AAX_LIBRARY_SOURCE_DIR}/*.mm")
-            if (AAX_LIBRARY_OSX_SOURCES)
-                list (REMOVE_ITEM AAX_LIBRARY_SOURCES ${AAX_LIBRARY_OSX_SOURCES})
-            endif()
+            list (APPEND AAX_LIBRARY_SOURCES ${AAX_LIBRARY_OBJC_SOURCES})
         endif()
 
+        # Class factory implementation required by AAX_Init.cpp
+        list (APPEND AAX_LIBRARY_SOURCES "${AAX_SDK_ROOT}/Interfaces/ACF/CACFClassFactory.cpp")
+
         if (AAX_LIBRARY_SOURCES)
             add_library (yup_audio_plugin_client_aaxlib STATIC ${AAX_LIBRARY_SOURCES})
             target_compile_features (yup_audio_plugin_client_aaxlib PRIVATE cxx_std_17)
             target_include_directories (yup_audio_plugin_client_aaxlib PRIVATE
                 "${AAX_SDK_ROOT}/Interfaces"
-                "${AAX_SDK_ROOT}/Interfaces/ACF")
+                "${AAX_SDK_ROOT}/Interfaces/ACF"
+                "${AAX_SDK_ROOT}/Libs/AAXLibrary/include")
+            target_compile_options (yup_audio_plugin_client_aaxlib PRIVATE
+                $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Wno-multichar>
+                $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Wno-undef-prefix>)
             target_compile_definitions (yup_audio_plugin_client_aaxlib PRIVATE
                 AAX_LIBRARY_BINARY=1)
 
@@ -129,6 +137,11 @@ function (_yup_audio_plugin_create_aax
 
     _yup_find_aax_sdk()
 
+    if (NOT TARGET yup_audio_plugin_client_aaxsdk)
+        _yup_message (STATUS "Skipping AAX plugin target for ${target_name} (AAX SDK not available)")
+        return()
+    endif()
+
     _yup_message (STATUS "Setting up AAX plugin client")
     _yup_module_setup_plugin_client (
         ${target_name}
@@ -151,6 +164,12 @@ function (_yup_audio_plugin_create_aax
         YUP_AUDIO_PLUGIN_ENABLE_AAX=1
         YUP_STANDALONE_APPLICATION=0)
 
+    # The ACF entry points (ACFRegisterPlugin, ACFStartup, ...) exported by the
+    # plugin binary are defined in the SDK's AAX_Exports.cpp
+    get_target_property (aax_sdk_root yup_audio_plugin_client_aaxsdk YUP_AAX_SDK_ROOT)
+    target_sources (${target_name}_aax_plugin PRIVATE
+        "${aax_sdk_root}/Interfaces/AAX_Exports.cpp")
+
     target_link_libraries (${target_name}_aax_plugin PRIVATE
         ${target_name}_shared
         yup_audio_plugin_client
@@ -197,13 +216,22 @@ function (_yup_audio_plugin_create_aax
 
         set (aax_plugin_path "$<TARGET_BUNDLE_DIR:${target_name}_aax_plugin>")
     else()
-        # Windows AAX: directory bundle with .aaxplugin extension
+        # Windows AAX plugins are directory bundles laid out as
+        # Name.aaxplugin/Contents/x64/Name.aaxplugin
+        set (aax_bundle_dir "${CMAKE_CURRENT_BINARY_DIR}/${target_name}_aax_plugin.aaxplugin")
+
         set_target_properties (${target_name}_aax_plugin PROPERTIES
             PREFIX ""
-            SUFFIX ".aaxplugin")
+            SUFFIX ".aaxplugin"
+            OUTPUT_NAME "${target_name}_aax_plugin"
+            RUNTIME_OUTPUT_DIRECTORY "$<1:${aax_bundle_dir}/Contents/x64>"
+            LIBRARY_OUTPUT_DIRECTORY "$<1:${aax_bundle_dir}/Contents/x64>")
 
-        set (aax_plugin_path "$<TARGET_FILE_DIR:${target_name}_aax_plugin>")
+        set (aax_plugin_path "${aax_bundle_dir}")
     endif()
 
     yup_codesign_target (${target_name}_aax_plugin "${aax_plugin_path}")
+
+    yup_audio_plugin_copy_bundle (${target_name} aax)
+
 endfunction()