gcc isn't installed anymore by Xcode, it really installs clang and calls it gcc
usxxplayegm1:~ grady$ which gcc
/usr/bin/gcc
usxxplayegm1:~ grady$ /usr/bin/gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.0.2
Thread model: posix
you need man clang
I thought it was a symlink, but ls -l
doesn't list it as a symlink, so either it is a hard link or some other sort of trickery.