[TUHS] Re: Typesetter C Compiler and Troff (Re: Re: v6 Unix Documents)

On Sat, 30 Nov 2024, Noel Chiappa wrote: Yes, I have a general sense after making some progress building on v6 and further exploring the PWB 1.0 and UNSW sets as noted below. Would be interested to complete the process and add any details I am missing. I had to use the new c compiler and assembler from the Shoppa disk (nix_v6.rl02.gz) to bootstrap the build using the UNSW files on v6. The original typesetter c distribution was supposed to be for v6, which is my intended use case, but it appears the third-party copies we have available drifted: - the stock v6 compiler could not build the new "Portable I/O Library" (/lib/libS.a supporting stdio) from UNSW or PWB as the pre-requisite to building the new compiler. The code is almost all the same in both, although UNSW is missing tmpnam.c. - "old" cc gave a lot of basic syntax errors from the included stdio.h and the library files with some of the most common issues being redeclared items and classes. - I had to adjust the UNSW includes to point to the in-directory stdio.h file rather than the to be created include path (/usr/include/stdio.h from #include <stdio.h>) that was assumed to already exist (not on v6). - table.o for the stdio library appears to require the new as - PWB 1.0 builds already have ncc and are straightforward, but rely on makefiles and use syscalls that are not available on v6 - UNSW's set provides traditional run shell scripts, but incorporates features -- the Bourne shell colon no-op and as with an -o flag -- that are not on v6 - everything for stdio and the new compiler apart from c1 built cleanly using ncc with /xlib I am still tracking down why building c1 lead to an error (_itol undefined). I think the build is getting close. Also, I suspect that the typesetter c distribution from AT&T differed from what we have in terms of the build scripts and likely included binaries with the source: it seems that at some point ncc became necessary to build later verison of ncc. Thanks, Dan