Does not work on Mac OSX

Mac OS X 10.8.5 on MacBook Pro:

<pre>
./scc '2+2'

readlink: illegal option -- f
usage: readlink [-n] [file ...]
usage: dirname path
sed: illegal option -- r
usage: sed script [-Ealn] [-i extension] [file ...]
       sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
clang: error: no such file or directory: '/main.cc'
clang: error: no input files
</pre>
