xcode build failure: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstring:70:9: No member named 'memcpy' in the global namespace; did you mean 'wmemcpy'?

Hello, I am working with Unity 5.4.1 and XCode 8.0. I am new to Unity and I am trying to build the xcode project generated for iOS. I've got plenty of errors related to C++ code like the one below. /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstring:70:9: No member named 'memcpy' in the global namespace; did you mean 'wmemcpy'? Any idea what is wrong here? Thanks