[R] R-2.0.1 Gentoo g77 problem

[Gabriel Rossetti]

Thank you for your help,

I tried Ioannis's f2c approach (Thanks Ioannis!!), and it works with the source from the R-Project site, but not with the Gentoo Portage system. I did have to use the source version, because I really need R, which I have to say Good job to all that work on it, it is really a great program! I would really rather have the gentoo ebuild, to keep my system clean. I then read the Gentoo forum page, and tried the symlinks, but no luck. I don't know how you did if Charles, but the links don't do much, I get :

...
...
checking how to get verbose linking output from g77... configure: WARNING: compilation failed

checking for Fortran libraries of g77...
checking for dummy main to link with Fortran libraries... none
checking for Fortran name-mangling scheme... configure: error: cannot compile a simple Fortran program
See `config.log' for more details.

I did compile gcc with fortran support, and gcc -v does give me f77, but I still can't get the R ebuild to build. I asked a classmate if he had any problems with R, he had non, I haven't had the pssibility to see if his system has the same gcc and such versions as me. I hope that I'll get it working one day!

Thanks again for all of your replys and have a good easter!

Gabriel Rossetti
University of Applied Science 
of Western Switzerland (EIVD)
E+I Department


----- Original Message -----
From: "Charles C. Berry" <cberry at tajo.ucsd.edu>
To: "Dimakos Ioannis" <idimakos at upatras.gr>
Subject: Re: [R] R-2.0.1 Gentoo g77 problem
Date: Wed, 9 Mar 2005 15:08:04 -0800

> 
> 
> Dimakos said:
> 
> > As I pointed out in a private message to the original poster, g77 is not
> > found in the gentoo system.  However, the system does provide f2c which
>   [ Dimakos' full text below]
> 
> 
> It IS found on my gentoo system:
> 
> bash-2.05b$ g77 -fversion
> GNU Fortran (GCC) 3.3.5  (Gentoo Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1)
> Copyright (C) 2002 Free Software Foundation, Inc.
> [snip]
> 
> This is where portage puts it:
> 
> ------------------------
> 
> bash-2.05b$ locate g77
> 
> [stuff deleted]
> 
> /usr/share/gcc-data/sparc-unknown-linux-gnu/3.3.5/man/man1/g77.1.gz
> /usr/sparc-unknown-linux-gnu/gcc-bin/3.3.5/g77
> /usr/sparc-unknown-linux-gnu/gcc-bin/3.3.5/sparc-unknown-linux-gnu-g77
> 
> [more stuff deleted]
> 
> bash-2.05b$ locate f771
> /usr/lib/gcc-lib/sparc-unknown-linux-gnu/3.3.5/f771
> 
> ------------------------
> 
> As someone else noted you have to set the USE flags to include 
> 'f77' or 'g77' and emerge gcc.
> 
> But setting USE = f77 did not leave a link or copy of g77 in 
> /usr/bin. Hence, the symlink referred to in my message below.
> 
> Apparently, Gabriel and I are not the only ones to come up against 
> this. There are a number of discussions like this one:
> 
> 	http://forums.gentoo.org/viewtopic.php?t=266985
> 
> where the solution was to copy or symlink /usr/bin/gcc to /usr/bin/g77.
> 
> Chuck
> 
> On Thu, 10 Mar 2005, Dimakos Ioannis wrote:
> 
> >> On Wed, 9 Mar 2005, Gabriel Rossetti wrote:
> >>
> >>> Hello,
> >>>
> >>> I use Gentoo and I can't get R 2.0.1 to compile. I used the portage
> >>> system, Gentoo's source package sytem, and after it uncompresses the
> >>> source to R, it says that I don't have a fortran compiler. It told me to
> >>> use f77 flag and re-emerge gcc, which I did with the f77 and fortran
> >>> flags, but it still won't compile. Does anyone have any ideas? I suspect
> >>> that gcc has changed it's interworkings, because if I do a gcc -v it
> >>> says that I can compile fortran(f77) programs, but I don't have g77. If
> >>> anyone has any ideas or workarounds, it would be great. I really need it
> >>> for a P&S class. Thanks!
> >>
> >>
> >> After experiencing similar problems and noticing that g77 was nowhere to
> >> be found, I symlinked /usr/bin/g77 --> /usr/bin/gcc.
> >>
> >> R then built and passed 'make check'.
> >
> > As I pointed out in a private message to the original poster, g77 is not
> > found in the gentoo system.  However, the system does provide f2c which
> > will translate fortran to C code and then R-2.0.1 passes configure, and
> > make and make check and make install and everything
> >
> > HTH,
> >
> > ICD
> >
> > -- Ioannis C. Dimakos
> > University of Patras
> > Department of Elementary Education
> > Patras, GR-26500 GREECE
> > http://www.elemedu.upatras.gr/dimakos/
> > http://yannishome.port5.com/
> >
> > -- Ioannis C. Dimakos
> > University of Patras
> > Department of Elementary Education
> > Patras, GR-26500 GREECE
> > http://www.elemedu.upatras.gr/dimakos/
> > http://yannishome.port5.com/
> >
> 
> Charles C. Berry                        (858) 534-2098
>                                           Dept of Family/Preventive Medicine
> E mailto:cberry at tajo.ucsd.edu	         UC San Diego
> http://hacuna.ucsd.edu/members/ccb.html  La Jolla, San Diego 92093-0717

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