Re: [R] Debugging R/Fortran in Windows

From: Uwe Ligges <>
Date: Fri 09 Sep 2005 - 18:51:07 EST

James Wettenhall wrote:

> Hi,
> I'm trying to debug an R interface to a Fortran subroutine from Windows.
> (Yes, I know I should try Unix/Linux as well, but a quick attempt
> suggested that the (MinGW g77) Fortran compiler I have installed on my
> Windows laptop works better on this Fortran code.)
> I'm trying to follow the instructions in the "Writing R Extensions" Manual:
> Start R under the debugger after setting a breakpoint for WinMain.
> gdb .../bin/Rgui.exe
> (gdb) break WinMain
> (gdb) run
> But when I run gdb on Rgui.exe, I get the message:
> "no debugging symbols found"
> and then when I try "break WinMain", I get:
> "No symbol table is loaded. use the 'file' command."
> I'm using R 2.1.1 on Windows 2000 and gdb 5.2.1 from MSys's MinGW.
> I'm calling a Fortran function (several times) from R. And I seem to have
> the basic two-way data communication working - I appear to have
> succesfully passed all required data types (integer, real, double
> precision) to and from Fortran with sensible results both from within R
> and from using WRITE(FILENUM,*) from within Fortran. But unfortunately
> there is still evidence of memory leakage.
> Any suggestions would be greatly appreciated.

James, please read the posting guide which asks you to read the R for Windows FAQ (which includes an answer on the question "How do I debug code that I have compiled and dyn.load-ed?").

It also tells you to send a question like this (given it is not answered in the manuals or FAQs etc.) to R-devel rather than R-help.

[hence further responses on this thread seem to be more appropriate for R-devel]


> Regards,
> James
> ______________________________________________
> mailing list
> PLEASE do read the posting guide! mailing list PLEASE do read the posting guide! Received on Fri Sep 09 18:52:33 2005

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