Re: Help - EXOPC INSTALLATION

    > > cc: installation problem, can not exec "cc1", no such file or
    > > directory cpp:

It seems gcc is not installed properly.  cpp and cc1 are two of its
subprograms (cpp is the preprocessor and cc1 is the main compiler
program).

If you run 
  gcc -print-libgcc-file-name
You can determine what directory gcc is expecting to find them in.  You
can override in various ways if they are somewhere else (e.g.,
GCC_EXEC_PREFIX, see the documentation).  

Or just install GCC yourself from source.

Hope this helps,
karl