Build for iOS as a libretro core

.gitlab-ci.yml

@@ -49,6 +49,10 @@ include:
   - project: 'libretro-infrastructure/ci-templates'
     file: '/android-cmake.yml'
 
+  # iOS
+  - project: 'libretro-infrastructure/ci-templates'
+    file: '/ios-cmake.yml'
+
   ################################## CONSOLES ################################
   
   #################################### MISC ##################################
@@ -133,3 +137,12 @@ libretro-build-android-x86:
   extends:
     - .libretro-android-cmake-x86
     - .core-defs
+
+# iOS arm64
+libretro-build-ios-arm64:
+  extends:
+    - .libretro-ios-cmake-arm64
+    - .core-defs
+    - .cmake-defs
+  variables:
+    CORE_ARGS: -DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/ios.cmake -DLIBRETRO=ON

CMakeLists.txt

@@ -1130,7 +1130,7 @@ if(ANDROID)
 		set(nativeExtraLibs ${nativeExtraLibs} openxr)
 	endif()
 	# No target
-elseif(IOS)
+elseif(IOS AND NOT LIBRETRO)
 	set(nativeExtra ${nativeExtra}
 		ios/main.mm
 		ios/AppDelegate.mm
@@ -1177,6 +1177,8 @@ elseif(IOS)
 	set_source_files_properties(UI/DarwinFileSystemServices.mm PROPERTIES COMPILE_FLAGS -fobjc-arc)
 	set_source_files_properties(Common/Battery/AppleBatteryClient.m PROPERTIES COMPILE_FLAGS -fobjc-arc)
 	set(TargetBin PPSSPP)
+elseif(IOS AND LIBRETRO)
+    set(nativeExtraLibs ${nativeExtraLibs} "-framework GLKit")
 elseif(USING_QT_UI)
 	set(CMAKE_AUTOMOC ON)
 	find_package(Qt5 COMPONENTS OpenGL Gui Core Multimedia)
@@ -2493,7 +2495,7 @@ if(NOT ANDROID)
 	file(INSTALL assets/flash0 DESTINATION assets)
 endif()
 # packaging and code signing
-if(IOS)
+if(IOS AND NOT LIBRETRO)
 	set(DEPLOYMENT_TARGET 11.0)
 	file(GLOB IOSAssets ios/assets/*.png)
 	list(REMOVE_ITEM IOSAssets ${CMAKE_CURRENT_SOURCE_DIR}/ios/assets/Default-568h@2x.png)

Common/GPU/OpenGL/GLQueueRunner.cpp

@@ -1758,7 +1758,7 @@ void GLQueueRunner::fbo_unbind() {
 	glBindFramebuffer(GL_FRAMEBUFFER, g_defaultFBO);
 #endif
 
-#if PPSSPP_PLATFORM(IOS)
+#if PPSSPP_PLATFORM(IOS) && !defined(__LIBRETRO__)
 	bindDefaultFBO();
 #endif
 

libretro/libretro.cpp

@@ -644,6 +644,13 @@ static void check_variables(CoreParameter &coreParam)
          g_Config.iCpuCore = (int)CPUCore::INTERPRETER;
    }
 
+   if (System_GetPropertyBool(SYSPROP_CAN_JIT) == false && g_Config.iCpuCore == (int)CPUCore::JIT) {
+       // Just gonna force it to the IR interpreter on startup.
+       // We don't hide the option, but we make sure it's off on bootup. In case someone wants
+       // to experiment in future iOS versions or something...
+       g_Config.iCpuCore = (int)CPUCore::IR_JIT;
+   }
+
    var.key = "ppsspp_fast_memory";
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
    {
@@ -1844,7 +1851,11 @@ bool System_GetPropertyBool(SystemProperty prop)
    switch (prop)
    {
    case SYSPROP_CAN_JIT:
+#if PPSSPP_PLATFORM(IOS)
+      return false;
+#else
       return true;
+#endif
    default:
       return false;
    }