There's also a GNU replacement CSSC[0]. I had to set this up at work 6-7 years ago to handle a very old code base that no one wanted to modernize. The repo was

There's also a GNU replacement CSSC[0]. I had to set this up at work 6-7 years ago to handle a very old code base that no one wanted to modernize. The repo was delivered to me on an old SCO system. I was able to move it to a modern system using CSSC, where it still lives today and needs almost no attention. One benefit of these ancient tools is that they are effectively done. They've been beaten on for years; all behavior and quirks are well understood, and whatever the promised feature set is, usually exists and works exactly as promised. [0]: https://www.gnu.org/software/cssc/ https://www.gnu.org/software/cssc/