IOS: Support building in Xcode 10/iOS 12, and for iPhone X-like devices that have a "safe area"

iOS 12 drops support for libstdc++, so the project needs to be compiled explicitly using libc++.
Support the "safe area" when redrawing the view to leave space for the notch in portrait and
landscape orientations.

backends/platform/ios7/ios7_video.mm

@@ -776,6 +776,7 @@ uint getSizeNextPOT(uint size) {
 		GLfloat ratio = adjustedHeight / adjustedWidth;
 		int height = (int)(screenWidth * ratio);
 		//printf("Making rect (%u, %u)\n", screenWidth, height);
+        
 		_gameScreenRect = CGRectMake(0, 0, screenWidth, height);
 
 		overlayPortraitRatio = (_videoContext.overlayHeight * ratio) / _videoContext.overlayWidth;
@@ -792,6 +793,32 @@ uint getSizeNextPOT(uint size) {
 
 	[self setViewTransformation];
 	[self updateMouseCursorScaling];
+    [self adjustViewFrameForSafeArea];
+}
+
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+-(void)adjustViewFrameForSafeArea {
+#if __has_builtin(__builtin_available)
+    if ( @available(iOS 11,*) ) {
+#else
+    if ( [[UIApplication sharedApplication] keyWindow] respondsToSelector:@selector(safeAreaInsets) ) {
+#endif
+        CGRect screenSize = [[UIScreen mainScreen] bounds];
+        UIEdgeInsets inset = [[UIApplication sharedApplication] keyWindow].safeAreaInsets;
+        UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
+        CGRect newFrame = screenSize;
+        if ( orientation == UIInterfaceOrientationPortrait ) {
+            newFrame = CGRectMake(screenSize.origin.x, screenSize.origin.y + inset.top, screenSize.size.width, screenSize.size.height - inset.top);
+        } else if ( orientation == UIInterfaceOrientationLandscapeLeft ) {
+            newFrame = CGRectMake(screenSize.origin.x, screenSize.origin.y, screenSize.size.width - inset.right, screenSize.size.height);
+        } else if ( orientation == UIInterfaceOrientationLandscapeRight ) {
+            newFrame = CGRectMake(screenSize.origin.x + inset.left, screenSize.origin.y, screenSize.size.width - inset.left, screenSize.size.height);
+        }
+        self.frame = newFrame;
+    }
 }
 
 - (void)setViewTransformation {

devtools/create_project/xcode/create_project.xcodeproj/project.pbxproj

@@ -186,6 +186,7 @@
 		F9A66C2E1396D36100CEE494 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_CXX_LIBRARY = "libc++";
 				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -199,6 +200,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_CPLUSPLUSFLAGS = "$(OTHER_CFLAGS)";
 				SDKROOT = macosx;
 			};
 			name = Debug;
@@ -206,6 +208,7 @@
 		F9A66C2F1396D36100CEE494 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_CXX_LIBRARY = "libc++";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					POSIX,
@@ -215,6 +218,7 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.5;
+				OTHER_CPLUSPLUSFLAGS = "$(OTHER_CFLAGS)";
 				SDKROOT = macosx;
 			};
 			name = Release;
@@ -230,6 +234,7 @@
 					"$(inherited)",
 					DEBUG,
 				);
+				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Debug;
@@ -242,6 +247,7 @@
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
+				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Release;

dists/ios7/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -1,5 +1,15 @@
 {
   "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
     {
       "size" : "29x29",
       "idiom" : "iphone",
@@ -36,6 +46,16 @@
       "filename" : "icon4-60@3x.png",
       "scale" : "3x"
     },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
     {
       "size" : "29x29",
       "idiom" : "ipad",
@@ -77,6 +97,11 @@
       "idiom" : "ipad",
       "filename" : "icon4-83.5@2x.png",
       "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
     }
   ],
   "info" : {

dists/ios7/Images.xcassets/LaunchImage.launchimage/Contents.json

@@ -1,5 +1,59 @@
 {
   "images" : [
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "2688h",
+      "filename" : "ScummVM-splash-1242x2688.png",
+      "minimum-system-version" : "12.0",
+      "orientation" : "portrait",
+      "scale" : "3x"
+    },
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "2688h",
+      "filename" : "ScummVM-splash-2688x1242.png",
+      "minimum-system-version" : "12.0",
+      "orientation" : "landscape",
+      "scale" : "3x"
+    },
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "1792h",
+      "filename" : "ScummVM-splash-828x1792.png",
+      "minimum-system-version" : "12.0",
+      "orientation" : "portrait",
+      "scale" : "2x"
+    },
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "1792h",
+      "filename" : "ScummVM-splash-1792x828.png",
+      "minimum-system-version" : "12.0",
+      "orientation" : "landscape",
+      "scale" : "2x"
+    },
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "2436h",
+      "filename" : "ScummVM-splash-1125x2436.png",
+      "minimum-system-version" : "11.0",
+      "orientation" : "portrait",
+      "scale" : "3x"
+    },
+    {
+      "extent" : "full-screen",
+      "idiom" : "iphone",
+      "subtype" : "2436h",
+      "filename" : "ScummVM-splash-2436x1125.png",
+      "minimum-system-version" : "11.0",
+      "orientation" : "landscape",
+      "scale" : "3x"
+    },
     {
       "extent" : "full-screen",
       "idiom" : "iphone",

dists/ios7/Info.plist

@@ -24,6 +24,8 @@
 	<string>????</string>
 	<key>CFBundleVersion</key>
 	<string>2.1.0git</string>
+	<key>LSSupportsOpeningDocumentsInPlace</key>
+	<true/>
 	<key>UIApplicationExitsOnSuspend</key>
 	<false/>
 	<key>UIDeviceFamily</key>