Matplotlib Installation On Mavericks

I'm having problem while installing matplotlib. I'm using Mavericks and it complains about a deprecated NumPy API both installing via pip and installing from source (following the

Solution 1:

Ok, I solved the issue also thanks to flebool. In the folder

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs

I had both MacOSX10.9.sdk and MacOSX10.8.sdk and I didn't know if they should exists both. I had Mavericks so I thought that maybe MacOSX10.8.sdk could be the problem. I deleted it and I managed to install matplotlib from source succesfully.