CMake fixes and new --ios-xcode ./b.sh command.

Also enables stencil for the iOS backbuffer. Fixes the GPU test and will doubtlessly
fix problems with running non-buffered (which you shouldn't do anyway though).

Slim alternative to #13766 with less risk to buildbots.

CMakeLists.txt

@@ -91,7 +91,7 @@ if(ANDROID OR WIN32 OR (UNIX AND NOT ARM_NO_VULKAN))
 endif()
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
-if(NOT (ARM64 AND MACOSX))
+if(NOT ((ARM64 AND MACOSX) OR IOS))
 	list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/sdl)
 endif()
 
@@ -198,7 +198,7 @@ if(USING_EGL)
 	set(OPENGL_LIBRARIES ${OPENGL_LIBRARIES} ${EGL_LIBRARIES})
 endif()
 
-if(NOT LIBRETRO)
+if(NOT LIBRETRO AND NOT IOS)
 	find_package(SDL2)
 endif()
 include(FindThreads)
@@ -1037,7 +1037,7 @@ if(WIN32)
 	target_link_libraries(Common winmm d3d9 dsound)
 endif()
 
-if(TARGET SDL2::SDL2)
+if(TARGET SDL2::SDL2 AND NOT IOS)
 	target_link_libraries(Common SDL2::SDL2)
 endif()
 
@@ -2168,11 +2168,12 @@ if(IOS)
 	set_source_files_properties(${RSRC_XIB_FILES}
 		PROPERTIES MACOSX_PACKAGE_LOCATION Resources
 	)
-	if(CMAKE_GENERATOR STREQUAL "Xcode")
-		set(APP_DIR_NAME "$(TARGET_BUILD_DIR)/$(FULL_PRODUCT_NAME)")
-	else()
+	#This breaks in modern XCode. Not sure when it worked...
+	#if(CMAKE_GENERATOR STREQUAL "Xcode")
+	#	set(APP_DIR_NAME "$(TARGET_BUILD_DIR)/$(FULL_PRODUCT_NAME)")
+	#else()
 		set(APP_DIR_NAME "$<TARGET_FILE_DIR:PPSSPP>")
-	endif()
+	#endif()
 	add_custom_command(TARGET PPSSPP POST_BUILD
 		COMMAND mkdir -p \"${APP_DIR_NAME}\"
 		COMMAND tar -c -C ${CMAKE_CURRENT_BINARY_DIR} --exclude .DS_Store --exclude .git assets *.png | tar -x -C \"${APP_DIR_NAME}\"
@@ -2185,7 +2186,6 @@ if(IOS)
 		RESOURCE "ios/Settings.bundle"
 		RESOURCE "MoltenVK/iOS/Frameworks"
 		XCODE_ATTRIBUTE_IPHONEOS_DEPLOYMENT_TARGET ${DEPLOYMENT_TARGET}
-		XCODE_ATTRIBUTE_TARGETED_DEVICE_FAMILY "iPhone/iPad"
 		XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC YES
 		XCODE_ATTRIBUTE_ENABLE_BITCODE NO
 		XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "-"

b.sh

@@ -16,6 +16,9 @@ do
 		--ios) CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/ios.cmake ${CMAKE_ARGS}"
 			TARGET_OS=iOS
 			;;
+		--ios-xcode) CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/ios.cmake -DIOS_PLATFORM=OS -GXcode ${CMAKE_ARGS}"
+			TARGET_OS=iOS-xcode
+			;;
 		--rpi-armv6)
 			CMAKE_ARGS="-DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/raspberry.armv6.cmake ${CMAKE_ARGS}"
 			;;

ios/ViewController.mm

@@ -196,6 +196,7 @@ static LocationHelper *locationHelper;
 	GLKView* view = (GLKView *)self.view;
 	view.context = self.context;
 	view.drawableDepthFormat = GLKViewDrawableDepthFormat24;
+	view.drawableStencilFormat = GLKViewDrawableStencilFormat8;
 	[EAGLContext setCurrentContext:self.context];
 	self.preferredFramesPerSecond = 60;