Unfortunately, the answer isn't as simple as that.... there are many variables.
- What language is the application you're compiling?
- Do you have the appropriate dependencies installed?
- Is it worth compiling manually, does a package/port exist...
First of all, did you install the comp43.tgz set, that includes the system binutils/gcc/headers/libraries etc.
Again, It's like walking into a large multicultural restaurant and asking *everybody* what you should order...