Building ZeroTier One on different platforms: (See RUNNING.txt for what to do next.) Developers note: there is currently no management of dependencies on *nix platforms, so you should make clean ; make if you change a header. Will do this eventually. -- Linux Just type 'make'. You'll need gcc and g++ installed, but ZeroTier One requires no other third party libraries beyond the standard libc, libstdc++, and libm. -- MacOS make If you are building ext/tap-mac you will need a different version of the OSX gcc compiler chain than what currently ships (clang). We've got a copy available here: http://download.zerotier.com/dev/llvm-g++-Xcode4.6.2.tar.bz2 Un-tar this into ext/ (it's excluded in .gitignore) and then 'make' in ext/tap-mac/tuntap/src/tap. Most users should not need to build tap-mac, since a binary is included in ext/bin. To build the UI you will need Qt version 5.0 or later. The Qt home must be symbolically linked into "Qt" in the parent directory of the ZeroTier One source tree. Then you can type "make mac-ui" and the UI should build. You can also load the UI in Qt Creator and build/test it that way. -- Windows Here be dragons.