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Re: Problem compiling with gpc and "Uses Crt" statement in crtc.c


Hey thanks.  I recognised that the problem was in a system level C
file, when I was trying to compile a Pascal file.  The thing is that
gpc is a Pascal compiler that is linked against the gcc backend.  The
GNU Pascal page
(http://directory.fsf.org/devel/prog/pascal/GNUPascal.html) states
that it implements ISO Pascal, Borland Pascal 7.0, and parts of other
Pascal standards or de-facto standards.

I tried removing the call to Use Crt, and have other errors.  I am
going to ask my question on the GNU-Pascal mailing list, since you do
not seem to feel that this is a Cygwin issue, but a) since gpc speaks
Borland, I would assume that it is not being messed up with the Uses
Crt, and b) since gpc comes as a part of the Cygwin install, and since
I installed it using the Cygwin Setup executable, I would think that
there should be no problem with it finding the correct object file,
but in this case it didn't.  Why would gpc start a gcc compile of the
crtc.c file?  I don't know that answer to that question.

Any other takes on this would be appreciated.  As I said, I am going
to chat on the GNU-Pascal list, but if anyone was seen this or has an
idea, I would be very appreciative.

Bruce



On 6/7/07, Dave Korn <dave.korn@artimi.com> wrote:
On 07 June 2007 20:13, Bruce Mahfood wrote:

> I am using gpc to compile code which contains the statement "Uses
> Crt".  I get over 600 error lines.  I am attaching the output of
> cygcheck -s -v -r, along with the output that I am getting from my
> compilation, as well as a test file that I have created which gives me
> the same errors.
>
> The command line that I am using is:
>
> gpc --automake --unit-path=/usr/lib/gcc/i686-pc-cygwin/3.4.4/units/ -g
> test.pas
>
> I have also used:
>
> C:\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\units
>
> in the unit-path.  Both paths gave the same results.

  I don't speak pascal, but I can tell you that that is almost certainly the
wrong thing to do.  Anything under /usr/lib/gcc is private and internal and
belongs to gcc (and its subcompiler gpc) only.  The compiler should pull it in
automatically when it needs to and not when it doesn't and it should
automatically know what and where it is and never need to be told.

> Basically the problem seems to be an issue with compiling crtc.c.

  I think you probably don't want to be recompiling the internal runtime
support stuff anyway.

> Thanks for your help...

  I'm afraid I can't help much, as I don't speak pascal.  Your example
compiles ok with the "Uses" statement removed.  A five-second google tells me
that "Uses Crt" is a Borland extension, so maybe all you need do is omit it?
(I think this is maybe a bit like the old getch() function that everyone used
in Borland C and MSVC to wait for a keypress but that is not part of the C
language and so does not exist in many other compilers/runtime libraries).


cheers, DaveK -- Can't think of a witty .sigline today....


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