Issue with executing a.out file (C++) MacOS Sierra 10.12.1

Question

I just updated to Sierra and it seems my compiler fell apart for some reason.

The code I wrote worked fine before the update, so I\'m sure its not an issue there but

Answer 1

There are multiple options:

• Try installing missing tools (if any) using xcode-select --install and try compiling. If that fails,
• Try running gcc -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk source.cpp. This obviously assuming you have SDK installed in that location. Replace with whatever location exist there.