macOS c++ in xcode compile errors

Hi, i was previously coding a project in Linux using CodeBlocks, it is using boost, guichan gui library and sdl as a backend. Ive imported my project into XCode and put all the required libraries etc into the project.

However im getting some compile errors.

the errors are in the complex numbers standard c++ header:

error: 'snprintf' is not a member of 'std'
error: '__pow_helper' is not a member of 'std'

Now these are standard c++ headers, i haven't altered any of them so i am at a loss as to why they won't compile.

how can i open the file as an admin because its in an area a normal user can't edit (also in the file there are lots of references to functions prefixed with std:: and it doesn't error out on any of them)

didn't work, gave me even more errors, the fsprintf errors are now in c++locale.h in the following bit of code:

#ifdef _GLIBCXX_USE_C99
const int __ret = std::snprintf(__out, __size, __fmt, __prec, __v);
#else
const int __ret = std::sprintf(__out, __fmt, __prec, __v);
#endif


i was thinking maybe its to do with gcc4? since iirc on ubuntu when i was coding i was compiling with gcc3?

thank you for your suggestions, however the error still occurs