On 15/09/2014, 5:25 PM, Andre Mikulec wrote: > > Hi, > I have a Fortran 77 subroutine (dll). > > On windows XP, how would I 'debug it(Fortran) within R' using gdb? > > This is how I made it. > ---------------------- > > R CMD SHLIB main.f > > gfortran -m32 -O3 -mtune=core2 -c main.f -o main.o > > gcc -m32 -shared -s -static-libgcc -o main.dll tmp.def main.o > -Ld:/RCompile/CRANpkg/extralibs64/local/lib/i386 > -Ld:/RCompile/CRANpkg/extralibs64/local/lib -lgfortran > -LF:/ProgramFiles/R/R-3.1.1/bin/i386 -lR > > > Here is the contents of the file main.f > ----------------------------------------- > > SUBROUTINE NGCD(NA, NB, NGCDO) > IA = NA > IB = NB > 1 IF (IB.NE.0) THEN > ITEMP = IA > IA = IB > IB = MOD(ITEMP, IB) > GOTO 1 > END IF > NGCDO = IA > RETURN > END
I don't think you put in any compile options to include symbolic information. You need to do that. I think the option you want is -gdwarf-2, but I rarely use Fortran, and never use SHLIB, so I could be wrong. I'll assume you can figure out how to do that. Run R under gdb using gdb Rgui Load your DLL. Break to gdb using the menu entry "Misc | Break to debugger". Set a breakpoint, e.g. b main.f:3 to set it on line 3. Then use c to let R continue, and make a call to your code. Then the usual gdb commands will work after it breaks. Duncan Murdoch ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
