iOS: weak-link with Metal.framework, SDL requires it (although we don't use the parts of SDL that use it).

platform/xcode/love.xcodeproj/project.pbxproj

@@ -41,6 +41,7 @@
 		FAC1A449196F5DC600125284 /* license.txt in Resources */ = {isa = PBXBuildFile; fileRef = FAC1A448196F5DC600125284 /* license.txt */; };
 		FAD43ED01FF3136500831BB8 /* freetype.framework in Copy Frameworks */ = {isa = PBXBuildFile; fileRef = FAD43ECF1FF3133700831BB8 /* freetype.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		FAD4B1731C1F50A3004CF150 /* theora.framework in Copy Frameworks */ = {isa = PBXBuildFile; fileRef = FA27B3CA1B498696008A9DCE /* theora.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
+		FAE64A9D2072738600BC7981 /* Metal.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = FAE64A9C2072738600BC7981 /* Metal.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -131,6 +132,7 @@
 		FAAFF04616CB120000CCDE45 /* OpenAL-Soft.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = "OpenAL-Soft.framework"; path = "/Library/Frameworks/OpenAL-Soft.framework"; sourceTree = "<absolute>"; };
 		FAC1A448196F5DC600125284 /* license.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = license.txt; path = ../../license.txt; sourceTree = "<group>"; };
 		FAD43ECF1FF3133700831BB8 /* freetype.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = freetype.framework; path = /Library/Frameworks/freetype.framework; sourceTree = "<absolute>"; };
+		FAE64A9C2072738600BC7981 /* Metal.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Metal.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/System/Library/Frameworks/Metal.framework; sourceTree = DEVELOPER_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -150,6 +152,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				FAE64A9D2072738600BC7981 /* Metal.framework in Frameworks */,
 				FA15DFB41F9B8D9E0042AB22 /* libbz2.tbd in Frameworks */,
 				CE73F8001EEB64150052DAB3 /* AVFoundation.framework in Frameworks */,
 				FA5D24D11A96E73300C6FC8F /* liblove.a in Frameworks */,
@@ -172,6 +175,7 @@
 		1058C7A0FEA54F0111CA2CBB /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				FAE64A9C2072738600BC7981 /* Metal.framework */,
 				FA15DFB31F9B8D9E0042AB22 /* libbz2.tbd */,
 				CE73F7FF1EEB64150052DAB3 /* AVFoundation.framework */,
 				FA5D24801A96C97900C6FC8F /* ios */,
@@ -663,6 +667,10 @@
 				COPY_PHASE_STRIP = NO;
 				ENABLE_BITCODE = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)",
+				);
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
@@ -711,6 +719,10 @@
 				ENABLE_BITCODE = NO;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)",
+				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -754,6 +766,10 @@
 				ENABLE_BITCODE = NO;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(PROJECT_DIR)",
+				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;