FAQ: libg2c.so.0: cannot open shared object file: No such file or directory

[Anders Blom]

One of the most common error messages when trying to start VNL/ATK is

'Not available', 'libg2c.so.0: cannot open shared object file: No such file or directory'

Quite obviously, this is because the library libg2c is missing. In many cases it is straightforward to install this library from the relevant package/software/update manager (look for libg2c, libf2c or g77), but one needs to pay some attention to which version to install, especially on 64-bit platforms, since VNL is a 32-bit application and therefore needs the corresponding 32-bit g2c library.

Some more detailed advice on specific platform will appear in further posts on this thread!

In general, a good resource for locating missing libraries to download is http://rpm.pbone.net/ (click "Search", then go to "Advanced Search" to be able to select distribution, otherwise you usually get way too many results in the search).

[Anders Blom]

Either you can use the software manager to locate and install the needed package (search for libg2c.so), or you can download the needed packages manually:

• Download the package libf2c-3.4.6-11.i386.rpm from http://rpm.pbone.net/index.php3/stat/4/idpl/8964536/com/libf2c-3.4.6-11.i386.rpm.html (or a later version). Note that you need the 32-bit library, even on a 64-bit platform, since VNL is a 32-bit application.
• Install the package with the following command (as root):

Code

rpm --install libf2c-3.4.6-11.i386.rpm 

[Anders Blom]

In Software Management mark the package "gcc-g77" for install (need Install CD1).

This will install the following 3 packages:

• glibc-devel-2.3.3-98.32.i686.rpm
• gcc-3.3.3-43.41.i586.rpm
• gcc-g77-3.3.3-43.41.i586.rpm

and the problem should be resolved.

[Anders Blom]

Install the GNU Fortran Compiler Runtime Library (containing libg2c.so) to fix the issue. The library is not located on the installation CDs, so instead use http://rpm.pbone.net to locate a 32-bit version of the library.

• Download the library from ftp://ftp.pbone.net/mirror/ftp5.gwdg.de/pub/opensuse/repositories/home:/algraf/openSUSE_10.3/i586/libg2c33-3.3.3-42.5.i586.rpm (or a later version). Note that you need the 32-bit library, even on a 64-bit platform, since VNL is a 32-bit application.
• Install it with the command (as root):

Code

rpm --install libg2c33-3.3.3-42.5.i586.rpm

[Anders Blom]

Sometimes, after installing the library, you need to link VNL to it: Go to the VNL lib directory and give the command

Code

ln -s /usr/lib/libg2c.so.0.0.0 libg2c.so.0

(or the appropriate location of the lib2c.so.* files).

[artitw]

Missing libg2c.so.0 can be fixed by installing libg2c0 from the Synaptic Package Manager or

Code

sudo apt-get install libg2c0

[srdguezb]

I need to obtain libg2c in Ubuntu 9.10

Any idea about it?

Thank you

[Anders Blom]

See http://quantumwise.com/forum/index.php?topic=432.0. Hope that helps

[lystor]

I need to obtain libg2c in Ubuntu 9.10
Any idea about it?

You can download it for Ubuntu:
http://packages.acl.org.ua/en/search/name/libg2c0

[milenko76]

I need libf2c for Ubuntu 9.04.Where to find it?

[milenko76]

I have downloaded from the link above but computer tells me that the newer version is already installed.
./xtramp: error while loading shared libraries: libf2c.so.2: cannot open shared object file: No such file or directory
Still I get this when I try to run program.
What should I do?

[bhushan_bhujang]

I got an indirect alternative solution to this problem in ubuntu (jaunty)
I downloaded f2c-20000510-5.i386.rpm  (since i could not find the same 32-bit package in .deb) from rpm site then converted .rpm to .deb by alien, i.e
in the terminal type
alien -d f2c-20000510-5.i386.rpm
then execute your problem. It will fix the error.