Your system is NOT supported by GCC, please read http://www.fsf.org/licensing/sco/
Perhaps you should read README.SCO at the top of the GCC tree?
And for your information, SCO is supported by GCC. I am the maintainer, and a few malcontents like yourself aside, I have had little trouble doing so. Please do not confuse my personal contribution to open source with my employers position based on a legal matter that they are using the courts to address. I wish you much success and happiness. Kean