The problem with SAS/C is getting the bits.. 
(I proberbly has it on a few floppies which I think I know where they are which can be read in a likely working amiga computer which perhaps would like to do some RS232 - now where is improbability drive when you need it! 
)
The most desired setup considering the answers here would be a unix system running DICE using SAS/C Makefiles to produce binaries which is then tested with UAE.
Complete SAS/C installation with all extras and patches here:
https://dl.dropboxusercontent.com/u/8177628/sasc658.lhaYou can run SAS/C from command line on other operating systems using AmiTools:
http://lallafa.de/blog/amiga-projects/amitools/IMO the simplest solution is to compile VBCC for whatever system you want to work in. VBCC is really easy to compile, set up and use.
