john@metavax.UUCP (John Mitchell ) (02/29/88)
In article <34588UH2@PSUVM> UH2@PSUVM.BITNET (Lee Sailer) writes: > >SAS is a million lines of source, and is written in C, though I believe >it is a traslation from the original PL/1. They must have some extra >tools they use--are they homebrew or commercial? My understanding is that SAS develops on IBM systems. A few years ago they decided to convert their software to C, but there was not an adequate C compiler available on IBM mainframes. So they ported the Lattice C compiler to IBM VM/CMS and MVS/TSO, this compiler was so successful internally that SAS decided to market it as a product. This compiler creates object code and has its own link editor that allows you to link in one subroutine from a source file that contains many subroutines. I am not affiliated with SAS in any way, other than as a customer. These are my own views, and are not necessarily shared by my employer. john