gistfile1.txt

> brew doctor
We couldn't detect gcc 4.0.x. Some formulae require this compiler.

You changed your cc to symlink to llvm.
This bypasses LLVM checks, and some formulae may mysteriously fail to work.
You may want to change /usr/bin/cc to point back at gcc.

To force Homebrew to use LLVM, you can set the "HOMEBREW_USE_LLVM" environmental
variable, or pass "--use-llvm" to "brew install".

To force Homebrew to use gcc, you can set the "HOMEBREW_USE_GCC" environmental
variable, or pass "--use-gcc" to "brew install".

/usr/bin is in your PATH before Homebrew's bin. This means that system-
provided programs will be used before Homebrew-provided ones. This is an
issue if you install, for instance, Python.

Consider editing your .bashrc to put:
  /usr/local/bin
ahead of /usr/bin in your $PATH.