Gpc January 2000

gpc@gnu.de

27 participants
41 discussions

Re: DOS, CRT Units?
by Russ Whitaker 08 Jan '00

08 Jan '00

Jeff Miller wrote > Where can I find Borland compatible > replacement units (system, dos, crt)? They should be in a directory named units. Also of interest is a directory named demos. try find /usr/local -name units and find /usr/local -name demos The duplicate copies under /usr/local/src should be used as back-ups J.I.C. Hopes this helps Russ <russwhit(a)mind.net>

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DOS, CRT Units?
by miller＠otago.ac.nz 08 Jan '00

08 Jan '00

Sorry for this newbie question: Where can I find Borland compatible replacement units (system, dos, crt)? The gpc FAQ led me to believe that they do not yet exist, but people are discussing them so they must! If it matters, I'm using the version of gpc running under EMX on OS/2. I'm trying to develop some statistical programs that will run under any version of gpc, however. Thanks for your help, Jeff Prof Jeff Miller Dept of Psychology University of Otago Dunedin, New Zealand International FAX: 64-3-479-8335 miller(a)otago.ac.nz http://psy.otago.ac.nz:800/staff/miller/welcome.htm

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Problem building gcc-2.95.2/gpc
by Martin Liddle 08 Jan '00

08 Jan '00

I have successfully built gcc-2.95.2 and gpc on one of my Linux systems. I have just done a fresh install of Linux (RedHat 6.0) on a different system. I have installed the gcc-2.95.2 sources and the latest gpc snapshot (from the same tar files as used for the first installation). I have successfully applied the gpc patches. However when I try to ../gcc-29.2/configure --enable-languages=c++,pascal the process fails almost immediately with the message "config.guess failed to determine the host type. You need to specify one". By running configure on the first system I deduce the host type should be i586-pc-linux-gnu however specifying this leads to another error message. Clearly something is wrong with my Linux installation on the second machine (I guess a required package is not installed) but I can't figure out what to do. Anybody any suggestions as to what to do next? -- Martin Liddle, Tynemouth Computer Services, 27 Garforth Close, Cramlington, Northumberland, England, NE23 6EW. Phone: 01670-712624. Fax: 01670-717324.

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Trying to compile GPC19991030
by Alfredo Cesar Fontana 06 Jan '00

06 Jan '00

Hello: Happy New Year!. I've trying to compile GPC 19991030 in RedHat Linux 5.2, 6.1, within then gcc 2.8.1 ( same as I did with the GPC 19990118 ) but I met that the set_word_size and set_word_big_endian in the pascal_init function in the file util.c are undeclared. I also try to compile within the gcc 2.95 source ( RH Linux 6.1 ). But there is not recognice the pascal language. Is there any suggestion? ... Alfredo

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Re: GPC Strings
by Frank Heckenbach 06 Jan '00

06 Jan '00

"Larry Carter" wrote: > Hi everyone, > > I apologize if this subject has been discussed already, but since I could > find no mention of it on either the GPC to-do pages or in the mailing list > archives I thought that I would bring it up. > > I know that the current GPC string standard has no length limitation, but > do you have to define the max length when declaring varaiables? And if so, > why? One nice thing about Delphi's "AnsiStrings" is that they are > dynamically assigned their length based on the length of the string > assigned. Also, they are reference counted so that copies of a string do > actually take up memory. > > The reason that I am wondering about this is that I am writing a small > unix utility that needs to parse file names (with path in some cases) and so > I need strings long enough to accomodate these names. However, I don't want > to be wasting memory declaring for example, > > strWork : String(2048); > > just to hold "HelloWorld.c" or even "/home/user/HelloWorld.c" but still be > able to take care of those evil ones like > "/usr/X11R6/lib/X11/shared/icons/samples/commercial/YourFriendlyNeighborhood > ComputerGuy.txt" as an example (ok, a stupid one, but...). > > > Is there a way to do this with existing GPC strings? If not, what about > supporting Delphi's string type that would allow > > strWork : String; > > and still accomodate any string needs up to available memory? This is planned ("undiscriminated strings" on the To-Do list), but currently we don't have the time to implement it, so it will have to wait... :-( Currently, the only way to do what you want is to use pointers and allocate memory dynamically as you need it. You can do: var p : ^String; { without length limitation } [...] New (p, 42); { allocate space for a string of length 42 } p^ := 'some text which is no longer then 42 chars'; [...] Dispose (p); 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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GPC Strings
by Larry Carter 06 Jan '00

06 Jan '00

Hi everyone, I apologize if this subject has been discussed already, but since I could find no mention of it on either the GPC to-do pages or in the mailing list archives I thought that I would bring it up. I know that the current GPC string standard has no length limitation, but do you have to define the max length when declaring varaiables? And if so, why? One nice thing about Delphi's "AnsiStrings" is that they are dynamically assigned their length based on the length of the string assigned. Also, they are reference counted so that copies of a string do actually take up memory. The reason that I am wondering about this is that I am writing a small unix utility that needs to parse file names (with path in some cases) and so I need strings long enough to accomodate these names. However, I don't want to be wasting memory declaring for example, strWork : String(2048); just to hold "HelloWorld.c" or even "/home/user/HelloWorld.c" but still be able to take care of those evil ones like "/usr/X11R6/lib/X11/shared/icons/samples/commercial/YourFriendlyNeighborhood ComputerGuy.txt" as an example (ok, a stupid one, but...). Is there a way to do this with existing GPC strings? If not, what about supporting Delphi's string type that would allow strWork : String; and still accomodate any string needs up to available memory? Larry Carter lcarter(a)hbtn.portland.or.us

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Porting to gpc
by Moore, Jason 05 Jan '00

05 Jan '00

I am a novice gpc user trying to port some code from an old Unix compiler to gpc. We have the following scattered throughout the code. Most of this code was written before I got here, so I take no credit. PString = STRING[255]; pPString = ^PString; . . . PPtr : pPString; . . . PPtr^ := ''; . . . PPtr^[0] := CHR(I); gpc is complaining about the PPtr^[0] line. If I change it to say "PPtr^ := CHR(I);" the compiler is happy, but we use this method several times to get the length of arrays or strings. Is there anyway to get gpc to allow this or does it violate the Pascal standard? -Jason

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/usr/i486-linux/bin/ld: cannot open -l-
by Andreas Neumann 05 Jan '00

05 Jan '00

Hello! I tried to compile a pascal program on SuSE Linux 6.3 and got the following error: ------------------------------------------------------- /usr/i486-linux/bin/ld: cannot open -l-: Datei oder Verzeichnis nicht gefunden collect2: ld returned 1 exit status ------------------------------------------------------- seems like it compiles without problems but cannot link - seems like a file or lib is missing or a path is not set correctly any idea what the problem could be? Thanks for help, Andreas PS: the small demo files that come with gpc compile and run correctly -- ---------------------------------------------- Andreas Neumann - Department of Cartography Swiss Federal Institute of Technology (ETH) ETH Hoenggerberg, CH-8093 Zurich, Switzerland Phone: ++41-1-633 3037, Fax: ++41-1-633 1153 e-mail: andreas.neumann(a)karto.baug.ethz.ch www: http://www.karto.ethz.ch/~an/ Private Address: Rebbergstrasse 16/102, CH-8037 Zurich Phone: ++41-1-273 66 68

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Integrating a compiler into the GCC back end
by Tim Josling 04 Jan '00

04 Jan '00

Hi, I am working on a COBOL compiler. My plan is to integrate into the GCC back end. I am looking at how to do this. Currently I have about 19,000 lines of code, which is the preprocessor plus the cobol nucleus grammar parser (cobol is a big language), at timjosling.homepage.com. Currently I have the book 'Using and Porting GCC', plus a sample integration of a toy language, as well as the fortran and pascal implementations. Which I am poring through at the moment. Given that you guys have already done this, I was wondering if there is anyone there who may be able/willing to answer some questions for me if I get roadblocked? I am not asking to be spoon fed, but sometimes someone just knows the answer to a question that may take ages to work out by yourself. Any suggestions about starting points, documentation, who to speak to, pros and cons of using the gcc back end are more than welcome. Tim Josling

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GNU Pascal DLL Support
by Grace C. Jewitt 03 Jan '00

03 Jan '00

I am president of a small company (Interstate Robotics) formed as a corporation in April, 1997 in Wilmington, Delaware in order to exploit cost/performance opportunities that exist in niche markets that require video data acquisition, storage, processing, and display capability. To date we have focused on developing and obtaining patent protection for core technologies to include Direct Device Interfaces (DDIs) and a visual programming tool. The visual programming tool provides an efficient means of developing applications by drawing flow diagrams to represent the interaction between software components. A DDI is an Application Program Interface (API) and device driver hybrid providing desktop and/or Web-enabled applications with direct, language-independent access to a physical device in order to simultaneously optimize speed of execution and minimize utilization of computer resources. Existing DDIs which expose the functionality of graphics, timer/scheduler, physical memory, and video data acquisition devices. Our current projects are listed on the Global Project Marketing Network at http://gpmn.com. All of our source code is in BP 7.0. In order to utilize GNU Pascal it would need to provide the capability to make and use DLLs. Is this the case? Regards Grace Jewitt

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Gpc January 2000