[ATrpms-users] Re: FC4 and g77 and f2c

[Axel Thimm]

On Sun, Jun 19, 2005 at 08:50:38PM +0200, André Fettouhi wrote:
> Axel Thimm wrote:
> 
> >On Sun, Jun 19, 2005 at 12:55:17PM +0200, 
> >Andre.Fettouhi at exp2.physik.uni-giessen.de wrote:
> > 
> >
> >>I am trying to compile a c/c++ program that has a few fortran files. 
> >>These are
> >>compiled with the -lg2c option. The program compiled without a problem on 
> >>FC2
> >>and FC3 but on FC4 I get the error message
> >>
> >>[root at pczo Go4FitExample]# make
> >>g++ -O /usr/local/Go4/Go4FitExample/Example3.o
> >>/usr/local/Go4/Go4FitExample/Example3Func.o -L/usr/local/root/lib -lCore 
> >>-lCint
> >>-lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix 
> >>-lPhysics
> >>-pthread -lm -ldl -rdynamic -lMinuit -L/usr/local/Go4/Go4Library -lGo4Fit 
> >>-lg2c
> >>-o  /usr/local/Go4/Go4FitExample/Example3
> >>/usr/bin/ld: cannot find -lg2c
> >>collect2: ld returned 1 exit status
> >>make: *** [/usr/local/Go4/Go4FitExample/Example3] Error 1
> >>
> >>For some reason it can't find libg2c but I have installed all fortran 
> >>libraries
> >>also the compat-gcc etc. to make sure I can compile g77. Strangely I 
> >>can't use
> >>locate lib2gc to find them, but on FC2/FC3 I could.
> >>   
> >>
> >
> >Are you sure you wanted to ask this on the ATrpms' mailing lists?
> >
> >Anyway libg2c is in compat-libf2c-32.
> >
> >You could also use gfortran (and -lgfortran) and rebuild the fortran
> >object files. See also
> >
> >http://www.gnu.org/software/gcc/fortran/usage.html
> >
> >HTH
> > 
> >
> I know Axel this doesn't really fit into the list, the point is that I 
> don't understand why it can't find libg2c when I have compat-libf2c-32 
> installed. I will try to use -lgfortran and see if that works. Thanks 
> for you reply :).

Checking this more carefully, I see that the *.so symlink to
libg2c.so.0 is missing. I.e. only built executables can access the
lib, not compilers.

You can try to add a symlink from libg2c.so.0 to libg2c.so and
retry. You may be lucky. If so, consider reporting to
bugzilla.redhat.com. The g77 compiler is quite useless w/o properly
working libg2c.

But the route to use gfortran is better as a long term solution.
-- 
Axel.Thimm at ATrpms.net
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