Re: [Chicken-users] Error with clang/FreeBSD

[Christian Kellermann]

* address@hidden <address@hidden> [130215 23:36]:
> > ### FROM: Felix <address@hidden>
> > ###   ON: Fri, 15 Feb 2013 20:49:20  0100 (CET)
> >
> > From: Vitaly Magerya <address@hidden>
> > Subject: Re: [Chicken-users] Error with clang/FreeBSD
> > Date: Fri, 15 Feb 2013 20:07:30  0200
> >
> > > Previously I wrote:
> > >> The correct thing to do here is to change '-z origin' into
> > >> '-Wl,-z,origin'. This way both GCC and Clang will do the right thing.
> > >>
> > >> (I currently tested this by compiling C files; I'll be able to test csc
> > >> modified that way in a dozen of hours or so, unless any of you folks do
> > >> it first).
> > >
> > > Yup, just tested csc modified that way; -deploy works correctly with
> > > gcc, clang and even pcc.
> > >
> >
> > Did you build chicken with pcc? Are there any modifications necessary?
> > I would be very interested about the details. I wasn't able to build
> > a working pcc so far.
> >
> >
> > cheers,
> > felix
> >
> 
> I tried pcc a couple of years ago, though rather disappointing that compiling 
> chicken with it failed miserably.  I don't have the details now, but vaguely 
> remember pcc couldn't handle some gcc-specific requirements as they were at 
> the time.
> 
> However using gcc-compiled chicken/csc -c on scheme source, I was able to 
> compile the C files with gcc, pcc and clang and compare the results.  
> Curiously, the clang and pcc apps were the just about the same size, in one 
> example, clang (54402 b), pcc (54414 b), whereas gcc-compiled  app was 
> somewhat smaller (38572 b).  Notably they all ran just fine, and I didn't 
> notice significant performance differences.
> 
> Don't know if anyone has tried other competent unix C compilers, e.g., from 
> Intel.  It seems likely there are enough quirky differences among C compilers 
> that it's difficult to create C source code universally compilable even on 
> the same platform.  Standards are supposed to account for it, but we all know 
> how that goes.

On that note:

I do have a semi working chicken using pcc as a C compiler. It does
have some issues though, I will try to resurrect it out of a ugarit
snapshot.

Kind regards,

Christian

-- 
In the world, there is nothing more submissive and weak than
water. Yet for attacking that which is hard and strong, nothing can
surpass it. --- Lao Tzu