GCC for pdp11

Aaron Jackson aaron at aaronsplace.co.uk
Fri Jul 13 15:12:17 CDT 2018

Great news, Paul!

I'll try and give this a go this weekend.


Paul Koning via cctalk writes:

> Gentlepeople,
> Once in a while people ask about GCC.  It has long had pdp11 support,
> but it hasn't received much attention.  Recently I've done some
> cleanup on it, and some more is in the pipeline.
> One notable new feature is that it can now produce proper DEC Macro-11
> syntax output.  It has long had a -mdec-asm switch, but that used to
> produce GNU output.  Now it produces DEC output (and -mgnu-asm is how
> you get output for "gas".)
> The optimizer is better, and a bunch of compiler failures are fixed.
> Undoubtedly there are more bugs to be worked on.
> Oh yes, for grins I told GCC to build not just a C compiler but a C++
> and Fortran compiler as well.  That seems to work (but I get an error
> building the libstdc++ library).  I now have C++ translations of the
> RSTS standard header files common.mac and kernel.mac, and the DECnet
> definitions in netdef.sml.  :-)
> If anyone wants to give this a try, the best way is to get the current
> code via Subversion (see gcc.gnu.org for details).  Alternatively, get
> a weekly snapshot; the DEC support is in the current latest, though
> some optimizer work will appear in the next one.
> 	paul

Aaron Jackson
PhD Student, Computer Vision Laboratory, Uni of Nottingham

More information about the cctech mailing list