embedded dylibs/frameworks are only supported on iOS 8.0 and later (@rpath/XCTest.framework/XCTest) for
ld:warning:directorynotfoundforoption'-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk/Developer/Library/Frameworks'ld:embeddeddylibs/frameworks