Link SwiftFoundation to SwiftXCTestFunctionalTests

Author: larryonoff

XCTest.xcodeproj/project.pbxproj

@@ -522,7 +522,10 @@
 				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				OTHER_CFLAGS = "";
-				OTHER_LDFLAGS = "";
+				"OTHER_LDFLAGS[sdk=macosx*]" = (
+					"-framework",
+					SwiftFoundation,
+				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
 				SWIFT_EXEC = "$(TOOLCHAIN_DIR)/usr/bin/swiftc";
@@ -534,7 +537,10 @@
 			buildSettings = {
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				OTHER_CFLAGS = "";
-				OTHER_LDFLAGS = "";
+				"OTHER_LDFLAGS[sdk=macosx*]" = (
+					"-framework",
+					SwiftFoundation,
+				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
 				SWIFT_EXEC = "$(TOOLCHAIN_DIR)/usr/bin/swiftc";