[Info-vax] VSI C/C++ compiler for OpenVMS expired yesterday!

[John Reagan]

On Monday, September 4, 2023 at 5:19:17 PM UTC-4, Craig A. Berry wrote:
> On 9/4/23 3:11 PM, Single Stage to Orbit wrote: 
> > On Mon, 2023-09-04 at 12:57 -0700, John Reagan wrote: 
> >> On Monday, September 4, 2023 at 8:18:49 AM UTC-4, Simon Clubley 
> >> wrote: 
> >>> On 2023-09-02, John Reagan <xyzz... at gmail.com> wrote: 
> >>>> Again, my apologies for the ancient timebomb (long story) 
> >>>> 
> >>> It happens :-) however much it would be nice it didn't... :-) 
> >>> 
> >>> Has anyone checked to make sure there are no timebombs waiting 
> >>> to go off in the other products ? 
> >> 
> > 
> >> C++ was the first native compiler prior to all of the LMF code (and 
> >> PAKs) being in place. 
> >> All of the other compilers and LPs rely on the termination date 
> >> feature of a PAK. 
> > 
> > That makes complete sense, can't bootstrap without a working toolchain.
> But C++ is not part of the toolchain, at least not that I've ever heard 
> of. And I doubt if much of the C code in VMS would compile with clang 
> without modifications.
> > What did you use as the host to build the toolchains and all the x86_64 
> > bits for VMS jut out of interest?
> John is the expert, but anyone following the roadmaps over the last 
> several years knows that C++ is clang++ and the other compilers use a 
> GEM compatibility layer to generate LLVM IR. And MACRO is special.
> > Is OpenVMS for x86 now self hosting 
> > and can it build itself?
> Most of the compilers started out as cross compilers running on Itanium 
> and as far as anything I've heard that's still what's in use for 
> building the OS itself. All of the native compilers that are available 
> are still in field test and likely to prioritize building customer code 
> for now.
There is one C++ module in the Itanium COBOL RTL.  SDL is written in C++
if you consider that part of the toolchain.

There are a handful of C++ modules in GEM but all but one can be easily
turned into C (which we had to do that for the initial native bootstrap)

For x86, there is a subset of LLVM inside of XMACRO so that is all C++ but
the MACRO.EXE is currently side-built and slipped into the V9.2/V9.2-1 kits.

And yes, all of the native compilers include G2L and LLVM (both in C++).