Gpc

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5400 discussions

Re: it's running :-)
by J.J. van der Heijden 11 Oct '96

11 Oct '96

On Tue, 8 Oct 1996 21:04:16 +0100 (MET), Peter Gerwinski <peter(a)agnes.dida.physik.uni-essen.de> wrote: >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. > There's a more subtle way to do this: Edit the "specs" file in your main djgpp directory. Locate the section [gcc] and copy it into a new section [gpc] The variables in each section are passed to this program as environment variables, but they don't clutter your real environment. You have to set one env. var "DJGPP" (case sensitive if you're in win95!) to point to the directory where "specs" lives. This is all documented in the DJGPP FAQ >> - 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? > It's AT&T syntax, not intel. Essentially, you have to read the arguments to an instruction in reverse. I think there was some explanation of this in the djgpp docs too (not sure), and there's a intel->at&t asm converter around somewhere (but probably won't do inline GPC asm). >> - 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 ... > There are a number of dpmi functions in the djgpp's C library. You _should_ be able to use these, if you declare them properly as external C style functions. These are the functions who's names start with __dpmi. I say _should_ because I have never tried this. >> 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. > Yes, djgpp's DPMI functions are all documented in the djgpp C lib reference. (libc.inf) Please send us any working snapshots of code, then we have documentation! JanJaap --- "Nothing shocks me, I'm a scientist", Indiana Jones

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Re: gpc-1.2-2.7.2
by J.J. van der Heijden 10 Oct '96

10 Oct '96

On Thu, 10 Oct 1996 12:15:33 +0200, schuh(a)informatik.uni-siegen.de <schuh(a)informatik.uni-siegen.de> wrote: >Hello, > >I have a Problem with the gpc-1.2-2.7.2 under Sun's SunOS 4.1.4. > >The first Problem was to compile gpc: >------------------------------------- >... >../gcc-2.7.2/obstack.o `if [ -f "../gcc-2.7.2/alloca.o" ]; then echo >"../gcc-2.7.2/alloca.o" ; else true ; fi` `if [ -f "../gcc-2.7.2/malloc.o" ]; then echo >"../gcc-2.7.2/malloc.o" ; else true ; fi` >collect2: ld returned 2 exit status >ld: Undefined symbol > _emit_string_move > _emit_string_pad > _maybe_find_function_data > _dbxout_set_type_status > _version_flag >*** Error code 1 >make: Fatal error: Command failed for target `gpc1' > > > >Now I delete > stor-layout.o dbxout.o expr.o fold-const.o optabs.o convert.o function.o toplev.o >from the gcc-source and I can build the Pascal-Compiler. > These are the symptoms of a VPATH problem of your `make' utility. You have two options: 1) ugrade to a recent version of GNU make 2) use different directories for GCC sources and object code when you build GCC > > >My second Problem ist to test the Compiler from the 'gpc/test'-directory: >-------------------------------------------------------------------------- >[schuh@pi20]test make >for x in head.pas nohead.pas cstparam.pas switches.pas bitmanip.pas incdec.pas minimax.pas mem.pas abso.pas asmnames.pas openarr.pas varrec.pas ; do \ > rm -f a.out 2>/dev/null ; \ > ../gpc -B../ -L../rts -g -O3 --automake="-g -O3 -B../" $x 2>/dev/null ; \ > echo -n "$x: " ; \ > if [ -f "a.out" ] ; then ./a.out ; else echo "failed" ; fi ; \ >done ; \ >rm myunit.o myunit.gpi a.out 2>/dev/null ; >*** Error code 1 >make: Fatal error: Command failed for target `bptest' > > >What make I wrong? >I hope that anybody can help me to fix this problem! Some more output would be nice, so we know which test(s) failed. Please add "-v" to the compiler flags in the Makefile, then rerun the tests. --- "Nothing shocks me, I'm a scientist", Indiana Jones

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getenv()
by John Michael Black 10 Oct '96

10 Oct '96

OK, I got the declarations to compile perfectly, but how do I use the function? It's not compatible with string types, so I can't do any assigning or string-testing. Here is how I declare the function: function getenv(s: __CString__): __CString__; C; Is there a way to assign the result into a string? -john

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gpc-1.2-2.7.2
by schuh＠informatik.uni-siegen.de 10 Oct '96

10 Oct '96

Hello, I have a Problem with the gpc-1.2-2.7.2 under Sun's SunOS 4.1.4. The first Problem was to compile gpc: ------------------------------------- ... ../gcc-2.7.2/obstack.o `if [ -f "../gcc-2.7.2/alloca.o" ]; then echo "../gcc-2.7.2/alloca.o" ; else true ; fi` `if [ -f "../gcc-2.7.2/malloc.o" ]; then echo "../gcc-2.7.2/malloc.o" ; else true ; fi` collect2: ld returned 2 exit status ld: Undefined symbol _emit_string_move _emit_string_pad _maybe_find_function_data _dbxout_set_type_status _version_flag *** Error code 1 make: Fatal error: Command failed for target `gpc1' Now I delete stor-layout.o dbxout.o expr.o fold-const.o optabs.o convert.o function.o toplev.o from the gcc-source and I can build the Pascal-Compiler. My second Problem ist to test the Compiler from the 'gpc/test'-directory: -------------------------------------------------------------------------- [schuh@pi20]test make for x in head.pas nohead.pas cstparam.pas switches.pas bitmanip.pas incdec.pas minimax.pas mem.pas abso.pas asmnames.pas openarr.pas varrec.pas ; do \ rm -f a.out 2>/dev/null ; \ ../gpc -B../ -L../rts -g -O3 --automake="-g -O3 -B../" $x 2>/dev/null ; \ echo -n "$x: " ; \ if [ -f "a.out" ] ; then ./a.out ; else echo "failed" ; fi ; \ done ; \ rm myunit.o myunit.gpi a.out 2>/dev/null ; *** Error code 1 make: Fatal error: Command failed for target `bptest' What make I wrong? I hope that anybody can help me to fix this problem! bye Frank _\\|//_ (' O-O ') ---------------------------ooO-(_)-Ooo--------------------------- < email: schuh(a)informatik.uni-siegen.de >

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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/

2 1

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

1 0

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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