Gpc November 2000

gpc@gnu.de

25 participants
31 discussions

using pascal procedures in C
by Nic Webb 14 Nov '00

14 Nov '00

I've got two programs: hello.pas, and uhello.c ... hello.pas defines a procedure called hello which simply writes "hello" to STDOUT... I compiled it and got the .o file, and made a header file for it defining: extern void Hello; then i use the .h file in uhello.c: #include "hello.h" and try a call to Hello in the main block of uhello.c... The program works without errors, but the Hello procedure isn't writing anything to the screen like it should... The Documentation pointed out that gpc will compile the procedure name with the first letter being capitalized, which is why I did the external declaration for Hello... Also, like in the example I saw, thge pascal file defined: procedure hello; asmname 'hello'; before actually defining the procedure with a being and end; statement... That's what I did.. Does the example mean that I should put asmname on the actual procedure declaration, or should it be separate like that? any ideas as to why the procedure isn't getting called? -Nic

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Warnings pindent beim Compelieren
by Thorsten Hindermann 14 Nov '00

14 Nov '00

HI Eike! Habe gerade mal die Warnings-Problematik getestet: in meinem Makefile lÃ¶sen die Compiler-Switch-Kombination -Wall und -O die Warnigs aus. Wenn ich -O wegnehme bleibt nur noch >pglobtls.pas:247: warning: excess elements in array initializer after >'Tclongopts' > aus meiner Unit Ã¼brig. Hierbei handelt es um ein echtes Warning, da ich bestimmt eine Array-Element weniger habe als der Array-Initializer. Das bekomme ich aber heraus, wenn ich das Array bearbeite. Habe mir eben mal deine GTKUNIT heruntergeladen und werde mir diese mal ansehen. Thorsten

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Gnu-DBM, gtk-Unit
by Eike Lange 14 Nov '00

14 Nov '00

Hi! I do not maintain the unit "dbatgdbm" no longer since Gnu-DBM is no more maintained by the FSF (for years, I didn't know). There is a small gtkunit available. GTK+ is "The Gimp Toolkit" and its a toolkit for writing X-Applications. The unit is based on libgtk1.2 and is available via anonymous ftp from: ftp://agnes.dida.physik.uni-essen.de/~lange/gtkunit-20001112.tar.gz where "20001112" is replaced by the actual date (YearMonthDay). The unit can't do more than shown in the examples (taken from the libgtk1.2-tutorial). Eike

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bug in array's
by Rudy Moddemeyer 08 Nov '00

08 Nov '00

Hello, There is a small bug in the implementation of array's. See the following example program: PROGRAM test(input, output); TYPE RealVectorT(b,e:integer) =ARRAY[b..e] OF Real; RealMatrixT(br,er,bc,ec:integer) =ARRAY[br..er] OF RealVectorT(bc,ec); VAR x:RealMatrixT(1,5,1,5); BEGIN x[1,1]:=0; { error: test.p: In function `pascal_main_program': test.p:10: subscripted object is not an array or string } x[1][1]:=0; { this is O.K. } END. Both implementations of addressing an array element x[1,1] and x[1][1] should be equivalent. In the first case the compiler does not interpret x as an array. The latter version is correctly interpreted and executed. I have used the relase 2.95.2 19991024 of gpc. With kind regards, Rudy Moddemeijer --------------------------------------------------------------------- | R. Moddemeijer | Department of Computing Science | | | University of Groningen | | Phone +31/50 - 363 3940 | Blauwborgje 3 room IWI 228 | | Telefax +31/50 - 363 3800 | P.O. Box 800 | | e-Mail rudy(a)cs.rug.nl | NL-9700 AV Groningen | | r.moddemeijer(a)cs.rug.nl | The Netherlands | | | | ---------------------------------------------------------------------

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gtk???
by Leon 07 Nov '00

07 Nov '00

Hi, Is there also a X-window unit like qtk or similair available for GPC?? -- Leon +-+-

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[egbert: Re: help writing documentation]
by Egbert Seibertz 07 Nov '00

07 Nov '00

Cc forgotten ... Egbert

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help writing documentation
by Eike Lange 07 Nov '00

07 Nov '00

Hi! I would like to help writing documentation for gpc. My project, writing german documentation for gpc died because nobody was interested helping me and its too much for just one man. I would prefer to discuss documentation-related topics on the gpc-doc-mailinglist (gpc-doc(a)gnu.de) . There are still some questions left: - Is Texinfo 4.0 ok? - Which options do you use to create the diffs - Are there any documentation-standards, I have to recognize? Eike

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Re: Cardinal ranges ...
by j.logsdon＠lancaster.ac.uk 07 Nov '00

07 Nov '00

Thanks to Marco for pointing out a stupidity (and for not sending it to the list!) but I was also checking on the subranges (really!) where the values are not trapped it seems and I don't seem to be able to check them (apart from in the coding of course). Is there a way to do this? It seems the Borland {$r+} is not recognised. John On Tue, 7 Nov 2000, Marco van de Voort wrote: > > Maybe I am using a slightly old version (2.95.2 19991024 (release)) but > > the following little program indicates there is something awry with the > > upper limits of cardinals. > > > > At least cardinal(32) and cardinal(64) should be able to calculate up to > > 4294967296 and 18446744073709551616 respectively. Note if I try and > > assign these directly within the program, the program doesn't compile > > with errors: > > You name even numbers here? The highest number in a cardinal is always odd! > > The biggest number in a cardinal(n) is 2^n MINUS ONE!!! >

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Re: Problems installing
by renkema26＠zonnet.nl 04 Nov '00

04 Nov '00

> On Tue, 31 Oct 2000, you wrote: > > On Tue, 31 Oct 2000, you wrote: > > > This might be a consequence of previous compilation attempts without > > > `--automake' (GPC doesn't handle this situation well, > > > unfortunately). Please try removing all *.o, *.gpi and *.gpm files > > > created by them. > > > > > > Frank > > > > > > -- > > > Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/ > > > GPC To-Do list, latest features, fixed bugs: > > > http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html > > > > I've deleted all the *.o ,*.gpi and *.gpm and tried it again > > but now this happens: > > > > bash-2.03# gpc --automake test.pas > > cpp: -lang-c: linker input file unused since linking not done > > gpc: installation problem, cannot exec `cc1': No such file or directory > > gpc1: gpc exited with status 1 > > gpc1: gpc exited with status 1 > > > > And all the unit files are in the correct dir (as saved in the tar-file) >Please copy or symlink cc1, cpp and possibly other files from the >GCC installation. E.g. do: > >ln -s `gcc --print-file-name=.`/* `gpc --print-file-name=.` > >and ignore errors about files that already exist. > >Frank > >-- >Frank Heckenbach, frank(a)g-n-u.de, http://fjf.gnu.de/ >GPC To-Do list, latest features, fixed bugs: >http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html >------------------------------------------------------- Thank you for your help. It works fine now. I can compile all the units who're included. Thanks very much, -- Leon <-<-<-<-<-<-<-<-<-<-<-< ->->->->->->->->->->->-

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Help Needed
by Montaz Ali 03 Nov '00

03 Nov '00

Dear Colleagues I am a pascal programmer and used to do programming in Unix environment. Now I am in a new place where it has only Linux machine. I would like to call a fortran routine from a main pascal program. I used to do this in Sun machine using the following command pc -o output pf.p ff.o where ff.o is made using f77 -c ff.f; out is executable file. In side my pascal program I defined (declared) the fortran subroutine as follows: function xx(var ...; var ...) :double; external fortran OR function xx(var ...; var ...) :double; external; (I believe here is my problem; above lines) In my current machine I have g77 (fortran equivalent) and gpc. I can get ff.o but when I use on-line commamd : gpc -o output pf.p ff.o. It gave me problems. There is not enough document in man pages to help me? Your help will be highly appciated? Best Regards Dr M Ali ----------------------------------------------- Centre for Control Theory and Optimization Department of Computational and Applied Mathematics University of the Witwatersrand Private Bag 3, Wits, 2050, Johannesburg, South Africa Tel: +27 (0)11 7176139 (W), Tel: +27 (0)11 403 0250 (H) Fax: +27 (0)11 403-9317 (W), http://www.cam.wits.ac.za/~mali/ Email : mali(a)cs.wits.ac.za

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Gpc November 2000