Gpc July 2000

gpc@gnu.de

35 participants
109 discussions

digest version of mailing list?
by John Oram 06 Jul '00

06 Jul '00

Is there a digest version of this mailing list? I'm looking for a single email once every 24-hour instead of multiple email's per day. Thanks in advance, John Oram Sacramento, CA

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Re:
by Frank Heckenbach 06 Jul '00

06 Jul '00

J. David Bryan wrote: > On 6 Jul 2000, at 16:06, xp2 wrote: > > > The GNU Pascal documentation is also availeble as "pdf", "doc", ASCII file > > or not ? > > As far as I know, the documentation is available only in GNU Texinfo format > as part of the source distribution. You can convert Texinfo to PDF or > Postscript with MiKTeX: It's also available in GNU Info (mostly ASCII, but with markup and cross-references) in source and binary distributions. DVI, PostScript and HTML versions will be made available on the WWW home page starting from the next release. 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

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grx-2.3.1 and gpc 20000705
by Mason Ip 06 Jul '00

06 Jul '00

I have some problems compiling some grx-2.3.1 pascal sample test programs using the latest gpc 20000705. My system is Sun Sparc Solaris 7. Currently I have two versions of gpc on my system. A) Old GPC (and GCC) /opt/GCC2951/bin/gpc -v Reading specs from /opt/GCC2951/lib/gcc-lib/sparc-sun-solaris2.7/2.95.1/specs gpc version 19991030, based on 2.95.1 19990816 (release) B) New GPC (and GCC) /opt/GCC2952/bin/gpc -v Reading specs from /opt/GCC2952/lib/gcc-lib/sparc-sun-solaris2.7/2.95.2/specs gpc version 20000705, based on 2.95.2 19991024 (release) I have fetched GRX (Graphics) source from the URL below. http://www.gnu.de/software/GRX/download/grx-2.3.1.tar.gz. grx-2.3.1 were compiled and (manually) installed to the "Old" and "New" dir's using "Old" and "New" GCC respectively; so far no problem. Problems come when building the sample pascal programs under grx-2.3.1's pascal directory. grx-2.3.1/pascal> ls ./ build-examples* modetest.pas vir_test.pas ../ grx20.gpi taste.pas bgi/ grx20.o txt_test* blt_test.pas grx20.pas txt_test.pas Here I have my tiny script "build-examples" to build the *.pas. grx-2.3.1/pascal> cat build-examples #!/bin/sh for pgm in `echo blt_test modetest taste txt_test vir_test` do echo compiling $pgm echo /opt/GCC2952/bin/gpc -o $pgm $pgm.pas /opt/GCC2952/lib/libgrx20X.a -lX11 /opt/GCC2952/bin/gpc -o $pgm $pgm.pas /opt/GCC2952/lib/libgrx20X.a -lX11 echo ----- done If I use the "Old" gpc from the script (keeping /opt/GCC2952/lib/libgrx20X.a the same), building were OK. With the "New" gpc, *no pascal programs were built*; the following were the script output (see below). I have no idea why the "init_Grx20" sysmol was not resolved by the "New" gpc, using the *same* library (/opt/GCC2952/lib/libgrx20X.a). <-- logging begin ---> compiling blt_test /opt/GCC2952/bin/gpc -o blt_test blt_test.pas /opt/GCC2952/lib/libgrx20X.a -lX11 blt_test.pas:26: type name expected, identifier `Grfont' given blt_test.pas:27: warning: type defaults to `int' in declaration of `F' ----- compiling modetest /opt/GCC2952/bin/gpc -o modetest modetest.pas /opt/GCC2952/lib/libgrx20X.a -lX11 Undefined first referenced symbol in file init_Grx20 /var/tmp/ccsjaOcV1.o ld: fatal: Symbol referencing errors. No output written to modetest collect2: ld returned 1 exit status ----- compiling taste /opt/GCC2952/bin/gpc -o taste taste.pas /opt/GCC2952/lib/libgrx20X.a -lX11 Undefined first referenced symbol in file init_Grx20 /var/tmp/ccXDaydV1.o ld: fatal: Symbol referencing errors. No output written to taste collect2: ld returned 1 exit status ----- compiling txt_test /opt/GCC2952/bin/gpc -o txt_test txt_test.pas /opt/GCC2952/lib/libgrx20X.a -lX11 txt_test.pas:28: type name expected, identifier `Grfont' given txt_test.pas:29: warning: type defaults to `int' in declaration of `F' txt_test.pas: In function `pascal_main_program': txt_test.pas:51: missing `^' in indirect function call txt_test.pas:51: called object is not a procedure or function txt_test.pas:61: assignment from incompatible pointer type txt_test.pas:65: missing `^' in indirect function call txt_test.pas:65: called object is not a procedure or function ----- compiling vir_test /opt/GCC2952/bin/gpc -o vir_test vir_test.pas /opt/GCC2952/lib/libgrx20X.a -lX11 vir_test.pas: In function `pascal_main_program': vir_test.pas:140: called object is not a procedure or function -----

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Re: Calling GNU Pascal procedures from Fortran
by Frank Heckenbach 05 Jul '00

05 Jul '00

Marinier, M. Claude, G. wrote: > I am using GNU Pascal 2.1 (19991030) on Solaris 2.7 from a package. > > I am porting a graphics package from DEC Pascal on VMS to GNU Pascal on > Solaris. The package is used with many Fortran programs. The conversion is > almost complete. All five levels of the package compile and all the Pascal > test programs I have build so far run OK. I cannot get the Fortran test > programs to link. The linker cannot find the graphics package entry > points. For example > > 'undefined reference to init_' > > I have found a lot of information about calling from Pascal but nothing so > far that help me to call from Fortran to Pascal. > > Can someone point me to the appropriate documentation? In the upcoming release, the mechanism for including Pascal code into C programs is changed and documented with examples. For Fortran, it should be similar (if you know how to call C code from Fortran, you should get along -- I don't know Fortran, so I can't give any details). 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

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fatal signal 6
by claude.marinier＠dreo.dnd.ca 05 Jul '00

05 Jul '00

Hi, I am trying to port a 3D graphics package from VMS/Alpha with DEC Pascal to Solaris 7 (a.k.a. Solaris 2.7). I have installed version 19990119 of gpc with version 2.8.1 of gcc. I have successfully compiled the first three levels of the graphics package. When compiling level4.pas, I get a 'fatal error 6' message, a .gpi file but no .o file. I systematically trimmed code (whole functions and procedures) off the end of the source file until is compiled. Most of the implementation section was gone at that point. I tried commenting out the same code with '(*' and '*)' with the same result: it compiled. I then tried to remove only the code on the border, i.e. the compilation failed, I removed another procedure, and it compiled; that last procedure is the one I removed from the full source. This was based on the assumption that some code triggered the failure. The compilation failed with the 'offending' code removed. I abandonned that avenue of research. Then I tried gcc debug options. I specifed '-da' and got about a dozen debug files (.sched2 & .dbr were empty). Specifying '-dJ' did not produce the expected .sched2 file. What is the next step? Try using the latest gcc as a base? Use Modules instead of Units? I would need documentation of those. Convert to Modula2? Is this even possible? How different are the languages? Is there a free compiler out there? Switch to C (use p2c, the Pascal to C translator) and abandon Pascal entirely? Help. Thanks. P.S. I joined the list a few minutes ago. To ensure that I get your reply, please 'cc' to me directly. Thanks. -- Claude Marinier, Information Technology Group claude.marinier(a)dreo.dnd.ca Defence Research Establishment Ottawa (DREO) (613) 998-4901 FAX 998-2675 3701 Carling Avenue, Ottawa, Ontario K1A 0Z4 http://www.dreo.dnd.ca

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Re: Internal compiler error - bug
by Frank Heckenbach 05 Jul '00

05 Jul '00

Clyde Meli wrote: > I'm compiling a PASCAL program under Solaris with gpc version > 19991030 based on gcc 2.95.2. > > > gpc --automake sgamain.pas > generate.pas: In function `Prescale': > generate.pas:33: Internal compiler error in `emit_library_call_value', at gcc-2. > 95.2/gcc/calls.c:3198 > Please submit a full bug report. > See <URL:http://www.gnu.org/software/gcc/faq.html#bugreport> for instructions. > gpc1: gpc exited with status 1 > report.pas:9: module/unit `generate' could not be compiled > > The code which caused the problem looks like: > > Procedure Prescale(umax,uavg,umin:real;VAR a,b:real); > { Calculate scaling coefficients for linear scaling } > CONST > fmultiple = 2.0; { fitness multiple is 2 } > VAR > delta:real; { divisor } > Begin > if umin > (fmultiple * uavg - umax) / (fmultiple - 1.0) { Non-Negative Test } > > then > Begin { Normal Scaling } > Delta:=umax-uavg; > a:=(fmultiple - 1.0) * uavg / delta; > b:=uavg * (umax - real(2) {fmultiple} * uavg) / delta; > End else > > > I fixed the problem termporarily by commenting out (fmultiple - 1.0) as it is > equal to 1.0 currently, and by replacing fmultiple in the other > assignment (b:=uavg*(umax- etc.) by real(2) instead. It seems writing the > constant there triggered a problem with the compiler. Indeed, this was a GPC bug that has been fixed meanwhile. According to the `Fixed Bugs' section in the To-Do list <http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html>: 20000503: Sparc: division by reals (fjf237.pas, matt1.pas) or `Round (real_constant)' (chaput1.pas) make the compiler crash <199911040915.KAA11168@@humulus.daimi.au.dk> Unfortunately, there's been no GPC release since 2000-05-03, so please either wait for the next release, or use the type-casting workaround in the first assignment as well (this should work, I think -- can't verify it, since my development compiler doesn't have this bug anymore): a:= (Real (fmultiple) - 1.0) * uavg / delta; 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

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Re: beta distribution
by Nathalie Jarosz 05 Jul '00

05 Jul '00

>From: Frank Heckenbach <frank(a)g-n-u.de> >To: gpc(a)gnu.de >Subject: Re: beta distribution >Date: Wed, 5 Jul 2000 13:22:37 +0200 > > >You need to link the C code. For a simple C file, you can insert > > >`{$L foo.c}' into the unit, and GPC will automatically compile the C > > >file. For a library libbar.a, you can use `{$L bar}' in the source > > >which is equivalent to `-lbar' on the command line. > > > > I am not sure to understand. Do I have to put {$L randlib.c} in beta.p >like > > this: > >If you have a self-contained file randlib.c. If randlib.c requires >other C files, say baz.c, add `{$L baz.c}' as well. However, if you >have librandlib.a instead, read on. > > > unit beta; > > interface > > {$L randlib.c} > > function genbet(x,y:shortreal):shortreal;C; > > implementation > > end. > > > > and keep my program called 'test' like this: > > > > program betadev; > > uses > > beta; > > begin > > writeln(genbet(100,150)); > > end. > > > > and after if I compile the first one, the following message appears: > > beta.p:5: file `randlib.c' not found > > > > and for the second one: > > Undefined first referenced > > symbol in file > > genbet /var/tmp/cc5OaGYv1.o > > ld: fatal: Symbol referencing errors. No output written to test > > collect2: ld returned 1 exit status > > > > When you say "For a library libbar.a, you can use `{$L bar}' in the >source > > which is equivalent to `-lbar' on the command line.", what is the source >in > > this case? > >GPC doesn't care. For libraries, it expects them to be compiled >already. I.e., if you have librandlib.a (a compiled library), add >`{$L randlib}' in the Pascal source. > >If you have the sources for librandlib, compile them first >(according to the (hopefully) accompanying instructions), to get >librandlib.a (or librandlib.so, a shared library, which can also be >used by `{$L randlib}'). So I will try to summurize all steps I made before still trying to be understood... At first, I have downloaded randlibc-1.3.tar.gz. After having unpacked this file, a randlib.c directory was created and it contains: HOWTOGET* README* doc/ src/ test/ I have received help from Maurice Lombardi to install this randlib routines: ------------------------------------------------------------------ > >From: Maurice Lombardi <Maurice.Lombardi(a)ujf-grenoble.fr> > >To: Nathalie Jarosz <jarosz_n(a)hotmail.com> > >CC: gpc(a)gnu.de > >Subject: Re: beta distribution > >Date: Fri, 30 Jun 2000 16:24:07 +0200 > > > >Have you read these two text files and those contained in the doc folder >? > >Usually they contain > >instructions on whet do do to install the package. >Yes of course but nothing clear to me: > > INSTALLATION > >Directory src contains the C source for most of the routines. The >files com.c and randlib.c constitute RANDLIB. The file randlib.h >contains prototypes for the RANDLIB routines that should be used (and >not for a few internal routines). The C code from these directories >should be compiled and placed in a library. Directory test contains >three test programs for this code. The file randlib.h in directory >test is a copy of that in src. > > >Where have you gotten randlibc-1.3.tar.gz from ? >I get from: >http://odin.mdacc.tmc.edu/anonftp/page_2.html#RANDLIB Well it is simple enough to be made by hand (there are no dependencies). With GNU tools type: cd src gcc -c -O2 com.c gcc -c -O2 linpack.c gcc -c -O2 randlib.c # ^uppercase: meand Optimize # at this point you have created com.o linpack.o randlib.o # to put them in a library librandlib.a type: ar -rv librandlib.a com.o linpack.o randlib.o ranlib librandlib.a # ^ no d: it is a system function #then move librandlib.a into a system wide library directory e.g. /usr/local/lib # randlib.h include /usr/local/include #to check the result cd ../test gcc -O2 -o tstbot tstbot.c -lrandlib ^lowercase: means output ./tstbot #etc..." ----------------------------------------------------------------------- So I did all this but I still don't understand how to use the famous betadev function I would like to use in a pascal program and which is in these randlib routines written in C... Thanks in advance for your help, Nathalie ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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Re: beta distribution
by Nathalie Jarosz 05 Jul '00

05 Jul '00

>From: Frank Heckenbach <frank(a)g-n-u.de> >To: gpc(a)gnu.de >Subject: Re: beta distribution >Date: Fri, 30 Jun 2000 20:35:04 +0200 >You need to link the C code. For a simple C file, you can insert >`{$L foo.c}' into the unit, and GPC will automatically compile the C >file. For a library libbar.a, you can use `{$L bar}' in the source >which is equivalent to `-lbar' on the command line. I am not sure to understand. Do I have to put {$L randlib.c} in beta.p like this: unit beta; interface {$L randlib.c} function genbet(x,y:shortreal):shortreal;C; implementation end. and keep my program called 'test' like this: program betadev; uses beta; begin writeln(genbet(100,150)); end. and after if I compile the first one, the following message appears: beta.p:5: file `randlib.c' not found and for the second one: Undefined first referenced symbol in file genbet /var/tmp/cc5OaGYv1.o ld: fatal: Symbol referencing errors. No output written to test collect2: ld returned 1 exit status When you say "For a library libbar.a, you can use `{$L bar}' in the source which is equivalent to `-lbar' on the command line.", what is the source in this case? Thanks in advance, Nathalie ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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Re: beta distribution
by Frank Heckenbach 05 Jul '00

05 Jul '00

Nathalie Jarosz wrote: > >You need to link the C code. For a simple C file, you can insert > >`{$L foo.c}' into the unit, and GPC will automatically compile the C > >file. For a library libbar.a, you can use `{$L bar}' in the source > >which is equivalent to `-lbar' on the command line. > > I am not sure to understand. Do I have to put {$L randlib.c} in beta.p like > this: If you have a self-contained file randlib.c. If randlib.c requires other C files, say baz.c, add `{$L baz.c}' as well. However, if you have librandlib.a instead, read on. > unit beta; > interface > {$L randlib.c} > function genbet(x,y:shortreal):shortreal;C; > implementation > end. > > and keep my program called 'test' like this: > > program betadev; > uses > beta; > begin > writeln(genbet(100,150)); > end. > > and after if I compile the first one, the following message appears: > beta.p:5: file `randlib.c' not found > > and for the second one: > Undefined first referenced > symbol in file > genbet /var/tmp/cc5OaGYv1.o > ld: fatal: Symbol referencing errors. No output written to test > collect2: ld returned 1 exit status > > When you say "For a library libbar.a, you can use `{$L bar}' in the source > which is equivalent to `-lbar' on the command line.", what is the source in > this case? GPC doesn't care. For libraries, it expects them to be compiled already. I.e., if you have librandlib.a (a compiled library), add `{$L randlib}' in the Pascal source. If you have the sources for librandlib, compile them first (according to the (hopefully) accompanying instructions), to get librandlib.a (or librandlib.so, a shared library, which can also be used by `{$L randlib}'). 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

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Re:
by Nathalie Jarosz 05 Jul '00

05 Jul '00

>From: Frank Heckenbach <frank(a)g-n-u.de> >To: gpc(a)gnu.de >Subject: Re: >Date: Tue, 4 Jul 2000 19:33:48 +0200 > > Here is the routine which is involved: > > > > function travel(djk:real;md:mat;A:minitable;Ak:real;ns,j:integer):real; > > {probability of an individual leaving patch j to reach patch k} > > const > > alpha = 4.910; > > zim = 0.263; > > lambda = 0.175; > > var > > Sj,t : real; > > begin > > Sj:=connect(md,A,ns,j); > > t:=(exp(-alpha*djk)*pow2(Ak,zim))/((lambda/Sj)+Sj); > > travel:=t; > > end; > >This is exactly the same GPC bug that Clyde Meli has just reported. >As I wrote last night, this bug has been fixed meanwhile. According >to the `Fixed Bugs' section in the To-Do list ><http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html>: > >20000503: Sparc: division by reals (fjf237.pas, matt1.pas) or >`Round (real_constant)' (chaput1.pas) make the compiler crash ><199911040915.KAA11168@@humulus.daimi.au.dk> > >(Sparc is the processor used in Sun's machines.) > >Until there is a new GPC release with this bug fixed, you can work >around by type-casting the constants to Real: > >const > alpha = Real (4.910); > zim = Real (0.263); > lambda = Real (0.175); Ok, but I need these true values, so?... Nathalie ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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Gpc July 2000