Gpc October 1996

gpc@gnu.de

22 participants
67 discussions

getting/setting environment variables
by Peter Gerwinski 10 Oct '96

10 Oct '96

According to John Michael Black: > Okay, here's another question. Is there a standard in Pascal that > retrieves and/or sets environment variables, like C's getenv()? If not, I > suppose I would declare and external procedure just like the others. I don't know of a de-jure Pascal standard for getenv(). Borland uses the C standard: Function GetEnv ( Index: String ): String; The "Tools" Unit of BO5 implements Borland's GetEnv by using C's one, Greetings, Peter e-mail: peter.gerwinski(a)uni-essen.de home address: D\"usseldorfer Str. 35, 45145 Essen, Germany WWW: http://agnes.dida.physik.uni-essen.de/~peter/

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external system() call
by Peter Gerwinski 10 Oct '96

10 Oct '96

According to John Michael Black: > procedure system(s: string); C; Use __CString__ instead of String. String is a Schema type, __CString__ a pointer to chars. Greetings, Peter

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getting/setting environment variables
by John Michael Black 10 Oct '96

10 Oct '96

Okay, here's another question. Is there a standard in Pascal that retrieves and/or sets environment variables, like C's getenv()? If not, I suppose I would declare and external procedure just like the others. -john

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it's running :-)
by Peter Gerwinski 09 Oct '96

09 Oct '96

According to Andreas Bauer: > - I've installed GPC into H:\GPC including DJGPP and the BINUTILS, > I think it's all v2. When running gpc.exe says: > ld.exe: cannot open -lgpc: No such file or directory (ENOENT) > Do i have to pass params to gpc or to set an environment-var ? DJGPP (including GPC) searches for libraries and such things in a specific directory structure. Normally, an environment variable points to the DJGPP directory, e.g. "H:\DJGPP", where there is a configuration file for the rest of the story. If you set it up in another directory tree structure, you have to specify library pathes either manually (-L) or by another environment variable which should be in the DJGPP documentation. > - I noticed that the output of GPC can't be redirected to a file. > Is there any posibility to write the compiler-output into a file ? Yes: gpc foo.pas -o foo.exe 2>foo.err Errors go to the "error device", therefore ">foo.err" is not sufficient. > - Can you tell me if it's possible to use standard x86-assembly with > gpc? Or is there at least a complete documentation of the gnu-assembler > anywhere ? I can hardly get used to it :( I have the same problem. Look into the GNU C documentation, section "Extensions to ASM" or similar. There is a description, but I had problems to understand it. Anybody out there who could explain to both of us how to use that inline assembler syntax? > - What must be done so that i can access the DPMI-interface through pascal > without using assembly language ? I think you *must* use assembly language. Interrupts and such things are not in Pascal's language standard. However it would be nice to have a Unit with a function (written in assembler) which solves this task ... > Is there any docu about that topic ? I don't know of such a thing. There could be some hints in the DJGPP and/or EMX documentation. > - I created a program accessing an "array[1..4000000] of byte". > All i got was an exception. How large must the stack be for this > application and why the stack ? I don't know why the stack is used, and I will change it (and use the data segment instead) unless somebody can tell me why the stack is preferable for the main program. However, if you put the array into a Unit (or Module), it will be accepted. Greetings, Peter e-mail: peter.gerwinski(a)uni-essen.de home address: D\"usseldorfer Str. 35, 45145 Essen, Germany WWW: http://agnes.dida.physik.uni-essen.de/~peter/

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external system() call
by John Michael Black 09 Oct '96

09 Oct '96

Perhaps I am not familiar enough with external calls, but I cannot get the following program to do anything: -------- program test_system; procedure system(s: string); C; begin system('ls -l'); end. -------- It is not a question of writing output to the screen, because even commands like "mkdir" do nothing. Any suggestions? -john

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it's running :-)
by andi.tio＠hit.handshake.de 08 Oct '96

08 Oct '96

Hi I'm a former (experienced) BP programmer and i'd like to move to GPC. Here are a few questions: - I've installed GPC into H:\GPC including DJGPP and the BINUTILS, I think it's all v2. When running gpc.exe says: ld.exe: cannot open -lgpc: No such file or directory (ENOENT) Do i have to pass params to gpc or to set an environment-var ? - I noticed that the output of GPC can't be redirected to a file. Is there any posibility to write the compiler-output into a file ? - Can you tell me if it's possible to use standard x86-assembly with gpc? Or is there at least a complete documentation of the gnu-assembler anywhere ? I can hardly get used to it :( - What must be done so that i can access the DPMI-interface through pascal without using assembly language ? Is there any docu about that topic ? - I created a program accessing an "array[1..4000000] of byte". All i got was an exception. How large must the stack be for this application and why the stack ? Thank you for any hints. Bye Andreas

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Re: Known GPC bugs
by JanJaap van der Heijden 07 Oct '96

07 Oct '96

At 12:57 PM 9/23/96 +0200, you wrote: >Hello folks, > >I updated the "known bugs" section of the Texinfo documentation >of the (experimental) gpc-1.2-2.7.2 pre-release. The new file >"bugs.texi" can be found at > Maybe we should get one of those systems where people can file bug reports in HTML forms. I have seen these before, but can't remember ever having seen a ready-to-go distribution. Anybody got any ideas? JanJaap -- The latest & greates in software, hardware and manswear -- Bono Vox (U2)

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OS/2 PM programs and DLL's
by Peter Gerwinski 07 Oct '96

07 Oct '96

According to Allan Derickson: > Is it possible at this point to make OS/2 Presentation Manager programs > with GNU Pascal? Yes, just as with GNU C in the EMX environment. Look into the EMX documentation and example programs (written in C). Use the "asmname" directive to access OS/2 API functions. I will release a version of BO5 which runs with the OS/2 pm not too far in the future. Peter e-mail: peter.gerwinski(a)uni-essen.de home address: D\"usseldorfer Str. 35, 45145 Essen, Germany WWW: http://agnes.dida.physik.uni-essen.de/~peter/

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OS/2 PM programs and DLL's
by alland＠whidbey.com 06 Oct '96

06 Oct '96

Hello, Is it possible at this point to make OS/2 Presentation Manager programs with GNU Pascal? Same question with OS/2 DLL's. If so, what is the format of the code? I have been totally unsuccessful with both. Allan D. Derickson -- Derickson Forestry Services -- Freeland, WA USA ----------------------------------------------------------- alland(a)whidbey.com -----------------------------------------------------------

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subscribe sixconse@sc.ehu.es
by Ikasle Kontseilua 05 Oct '96

05 Oct '96

subscribe sixconse(a)sc.ehu.es

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Gpc October 1996