[R] dyn.load() for windows

[Utsav Boobna]

Hi, 

When I check the dll file by tdump, following error
message was recieved.

C:\Borland\BCC55\Bin>tdump Sample.dll
Turbo Dump  Version 5.0.16.12 Copyright (c) 1988, 2000
Inprise Corporation
                    Display of File SAMPLE.DLL
ERROR: Invalid signature for an .EXE file - found
0C80, expected 5A4D

Please help.

Cheers,
Utsav


--- Duncan Murdoch <dmurdoch at pair.com> wrote:
> On Fri, 9 Jul 2004 03:29:55 -0700 (PDT), Utsav
> Boobna
> <catch_utsav at yahoo.com> wrote :
> 
> >Hi 
> >I am using Borland C++ compiler 5.5 and R 1.7.1
> >
> >got the dll using 
> >
> >c:\> bcc32 -u- -6 -O2 -osample.dll -WDE sample.c
> 
> I don't know the bcc32 command line options.  Can
> you examine the
> sample.dll file (using e.g. "tdump sample.dll", if
> you have tdump, or 
> "objdump -x sample.dll" using the objdump tool from
> our tools
> collection), and make sure it really is a DLL file?
> 
> Once you work out what is necessary to produce a DLL
> that works,
> please write up a short description and send it to
> me to include on my
> page
> 
>
http://www.stats.uwo.ca/faculty/murdoch/software/compilingDLLs/
> 
> I don't think there's anything there now that would
> help you, but you
> might browse it for inspiration...
> 
> Duncan Murdoch
> 
> >
> >
> >Then in R I used
> >
> >> dyn.load("sample.dll")
> >
> >Error in dyn.load(x, as.logical(local),
> >as.logical(now)) : 
> >        unable to load shared library
> "C:/sample.dll":
> >  LoadLibrary failure:  %1 ist keine zulässige
> >Win32-Anwendung.
> >
> >(Its in German ... meaning "%1 is not a valid Win32
> >application.")
> >
> >
> >
> >Thanks,
> >Utsav
> >
> >--- Duncan Murdoch <dmurdoch at pair.com> wrote:
> >> On Fri, 9 Jul 2004 01:58:27 -0700 (PDT), Utsav
> >> Boobna
> >> <catch_utsav at yahoo.com> wrote:
> >> 
> >> >Hi,
> >> >   I compiled several C program files on Borland
> >> C++
> >> >compiler to get one dll output (as instructed in
> >> the
> >> >file readme.package). Now when I try to load
> this
> >> >*.dll to R using dyn.load(), then the machine
> gives
> >> >the error message "*.dll is not a valid windows
> >> >data,....". The out put of R is 
> >> >
> >> >I am working on win2k.
> >> >What could be the possible reason for that?
> >> 
> >> Please show us your code and the exact error
> message
> >> (using cut and
> >> paste).  It might also help if you gave an exact
> >> description of how
> >> you produced the DLL (though I'm not familiar
> with
> >> BC++, someone else
> >> might be), and gave version numbers of BC++ and
> R.
> >> 
> >> Duncan Murdoch
> >>
> >
> >______________________________________________
> >R-help at stat.math.ethz.ch mailing list
>
>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
> 
>