Re: using iargc()/getarg() form C

[Steve Kargl <sgk at troutmask dot apl dot washington dot edu>]

On Wed, Feb 23, 2005 at 08:24:12AM -0600, Satish Balay wrote:
> On Tue, 22 Feb 2005, Steve Kargl wrote:
> 
> > kargl[221] cat gr.c
> > extern int  _gfortran_iargc(void);
> > int iargc_(void)
> > {
> >   return _gfortran_iargc();
> > }
> > kargl[222] cat foo.f90
> >         program main
> >         integer i
> >         i = iargc()
> >         print *, i
> >         end

Whoops.  I sent the wrong foo program.  Try this one.

program main
  integer i, iargc
  external iargc    ! This line is important.
  i = iargc()
  print *, i
end

troutmask:kargl[220] /usr/tmp/sgk/bin/gfc -o foo -static foo.f90 
/var/tmp/cc8VmR4v.o(.text+0x9): In function `MAIN__':
: undefined reference to `iargc_'
collect2: ld returned 1 exit status
troutmask:kargl[221] /usr/tmp/sgk/bin/gfc -o foo -static foo.f90 gr.o
troutmask:kargl[222] ./foo 1 2 3
           3
troutmask:kargl[228] /usr/tmp/sgk/bin/gfc -static -c foo.f90
troutmask:kargl[229] nm foo.o
0000000000000000 T MAIN__
                 U _gfortran_filename
                 U _gfortran_ioparm
                 U _gfortran_line
                 U _gfortran_st_write
                 U _gfortran_st_write_done
                 U _gfortran_transfer_integer
                 U iargc_


-- 
Steve