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Smaller C compiler (Announce)

posted by alexfru(R), USA, 20.06.2016, 07:51

> > > > Isn't ancient GCC 2.7's CPP fairly small? I imagine that would be
> > > > (relatively) easy to port.
> > >
> > > I haven't seen it, but I have doubts.
> >
> > It's fairly small, but it too is probably very POSIX heavy (or maybe
> relies
> > on other weird stuff, alloca??). Dunno, maybe a bad suggestion, I too
> > haven't looked closely.
> If I'm unhappy with Plan9's, I may take a look.

So, I've cleaned up and ANSI-C-fied the original Plan9's preprocessor and decided to compare it with the LCC version. It's funny, but there are bugs in both as can be seen when feeding them examples from the C standard. LCC aims at fixing some of them, but has a mixed success. It fixes a couple, fails to fix another and on some input just hangs. I might spend some cycles to investigate and fix some of these, but it's a bit of a bummer. I had higher expectations for this preprocessor.

There's another one (ucpp) and it seems to pass those tests and it's BSD-licensed, but it's larger and needs to be split into more .c files for compilation with Smaller C (alternatively, smlrc may be recompiled to accommodate for larger .c files).

We'll see...



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