Bug#610291: libgfortran: /usr/bin/ld: cannot find -lgfortran

["Kingsley G. Morse Jr." <kingsley@loaner.com>]

On 01/17/11 13:07, Matthias Klose wrote:
> On 17.01.2011 08:19, Kingsley G. Morse Jr. wrote:
> >Package: libgfortran3
> >Version: 4.4.5-10
> >Severity: normal
> >File: libgfortran
> >
> >
> >Thanks for maintaining libgfortran3.
> >
> >I use it.
> >
> >I happened to notice that building some R packages
> >from their source code elicited an error about
> >not being able to find gfortran's library.
> >
> >Here's one way that I found tne bug.
> >
> >     $ R
> >     >  install.package("amap")
> >     gfortran   -fpic  -O3 -pipe  -g -c pop.f -o pop.o
> >     g++ -shared -o amap.so acprob.o burt.o diss.o distance.o distance_T.o 
> >     hclust.o hclust_T.o kmeans.o pop.o -lpthread -lgfortran -lm 
> >     -L/usr/lib/R/lib -lR
> >     /usr/bin/ld: cannot find -lgfortran
> >     collect2: ld returned 1 exit status
> >     make: *** [amap.so] Error 1
> >     ERROR: compilation failed for package 'amap'
> >
> >The other way was
> >
> >     >  install.package("kernlab")
> >
> >I fixed them by doing
> >
> >     $ ln -s /usr/lib/libgfortran.so.3.0.0 /usr/lib/libgfortran.so
> >
> >If possible, maybe the libgfortran3 package should
> >create a similar symbolic link.
> 
> No, the link is present. which g++ do you use?
> 
>   which g++
>   g++ --print-file-name libgfortran.so

Hi Matthias,

Thank you for replying quickly.

I typed the two commands in your email.

Here's what happened:

    $ which g++
    /usr/bin/g++
    $ ls -l /usr/bin/g++
    lrwxrwxrwx 1 root root 7 2009-03-22 10:49 /usr/bin/g++ -> g++-4.3

    $ g++ --print-file-name libgfortran.so
    /usr/lib/gcc/i486-linux-gnu/4.3.3/../../../../lib/libgfortran.so

Then I removed the symbolic link for
/usr/lib/libgfortran.so that fixed my problem, and
ran g++ again.

    $ rm /usr/lib/libgfortran.so
    $ g++ --print-file-name libgfortran.so
    libgfortran.so

Does that help?

Thanks,
Kingsley