diff --git a/docs/index.html b/docs/index.html
index b85309b5e..560adb61c 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -244,7 +244,7 @@
   <h2><b><a name="Features">Features</a></b></h2>
 
   <ul>
-    <li>High speed emulation using optimized C++11 code</li>
+    <li>High speed emulation using optimized C++14 code</li>
     <li>Supports high quality TIA emulation using the TIA core from
       <a href="https://github.com/6502ts/6502.ts">6502.ts</a> by
       Christian Speckner</li>
@@ -338,7 +338,7 @@
     <li>OpenGL capable video card</li>
     <li>Other architectures (MIPS, PPC, PPC64, etc) have been confirmed to work,
       but aren't as well tested as i386/x86_64</li>
-    <li>GNU g++ v/5 or Clang v/3.5 (with C++11 support) and the make utility are required for compiling the Stella source code</li>
+    <li>GNU g++ v/5 or Clang v/3.5 (with C++14 support) and the make utility are required for compiling the Stella source code</li>
   </ul>
 
   <p>
diff --git a/src/macosx/stella.xcodeproj/project.pbxproj b/src/macosx/stella.xcodeproj/project.pbxproj
index ec01027ff..922004d7d 100644
--- a/src/macosx/stella.xcodeproj/project.pbxproj
+++ b/src/macosx/stella.xcodeproj/project.pbxproj
@@ -463,7 +463,6 @@
 		DCACBAD11C54296300703A9B /* CartCVPlusWidget.hxx in Headers */ = {isa = PBXBuildFile; fileRef = DCACBACF1C54296300703A9B /* CartCVPlusWidget.hxx */; };
 		DCACBAD41C54298300703A9B /* CartCVPlus.cxx in Sources */ = {isa = PBXBuildFile; fileRef = DCACBAD21C54298300703A9B /* CartCVPlus.cxx */; };
 		DCACBAD51C54298300703A9B /* CartCVPlus.hxx in Headers */ = {isa = PBXBuildFile; fileRef = DCACBAD31C54298300703A9B /* CartCVPlus.hxx */; };
-		DCAD0A101B2E49A6000430AD /* UniquePtr.hxx in Headers */ = {isa = PBXBuildFile; fileRef = DCAD0A0F1B2E49A6000430AD /* UniquePtr.hxx */; };
 		DCAD60A81152F8BD00BC4184 /* CartDPCPlus.cxx in Sources */ = {isa = PBXBuildFile; fileRef = DCAD60A61152F8BD00BC4184 /* CartDPCPlus.cxx */; };
 		DCAD60A91152F8BD00BC4184 /* CartDPCPlus.hxx in Headers */ = {isa = PBXBuildFile; fileRef = DCAD60A71152F8BD00BC4184 /* CartDPCPlus.hxx */; };
 		DCB20EC71A0C506C0048F595 /* main.cxx in Sources */ = {isa = PBXBuildFile; fileRef = DCB20EC61A0C506C0048F595 /* main.cxx */; };
@@ -1092,7 +1091,6 @@
 		DCACBACF1C54296300703A9B /* CartCVPlusWidget.hxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = CartCVPlusWidget.hxx; sourceTree = "<group>"; };
 		DCACBAD21C54298300703A9B /* CartCVPlus.cxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CartCVPlus.cxx; sourceTree = "<group>"; };
 		DCACBAD31C54298300703A9B /* CartCVPlus.hxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = CartCVPlus.hxx; sourceTree = "<group>"; };
-		DCAD0A0F1B2E49A6000430AD /* UniquePtr.hxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = UniquePtr.hxx; sourceTree = "<group>"; };
 		DCAD60A61152F8BD00BC4184 /* CartDPCPlus.cxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CartDPCPlus.cxx; sourceTree = "<group>"; };
 		DCAD60A71152F8BD00BC4184 /* CartDPCPlus.hxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = CartDPCPlus.hxx; sourceTree = "<group>"; };
 		DCB20EC61A0C506C0048F595 /* main.cxx */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = main.cxx; sourceTree = "<group>"; };
@@ -1501,7 +1499,6 @@
 				DC5C768E14C26F7C0031EBC7 /* StellaKeys.hxx */,
 				DC74D6A0138D4D7E00F05C5C /* StringParser.hxx */,
 				DCC467EA14FBEC9600E15508 /* tv_filters */,
-				DCAD0A0F1B2E49A6000430AD /* UniquePtr.hxx */,
 				DC7A24D4173B1CF600B20FE9 /* Variant.hxx */,
 				DCF490791A0ECE5B00A67AA9 /* Vec.hxx */,
 				DCF467BC0F9399F500B25D7A /* Version.hxx */,
@@ -2195,7 +2192,6 @@
 				DCF3A6FB1DFC75E3008A8AF3 /* Player.hxx in Headers */,
 				DC8C1BB014B25DE7006440EE /* CompuMate.hxx in Headers */,
 				DC8C1BB214B25DE7006440EE /* MindLink.hxx in Headers */,
-				DCAD0A101B2E49A6000430AD /* UniquePtr.hxx in Headers */,
 				DCCF47DE14B60DEE00814FAB /* ControllerWidget.hxx in Headers */,
 				DCCF47E014B60DEE00814FAB /* JoystickWidget.hxx in Headers */,
 				DCCF49B814B7544A00814FAB /* PaddleWidget.hxx in Headers */,
@@ -2771,7 +2767,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
@@ -2806,7 +2802,7 @@
 				INSTALL_PATH = "@rpath";
 				LD_RUNPATH_SEARCH_PATHS = "@loader_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.7;
-				ONLY_ACTIVE_ARCH = NO;
+				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
 				VALID_ARCHS = x86_64;
 				WARNING_CFLAGS = "-Wall";
@@ -2817,7 +2813,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;