cannot find -lg2c

[hersh]

I m trying to use one software EIGNSOFT 3.0 for data analysis.
When I am trying to install the software I am getting following error

solid@ubuntu:~/t/src$ make all
mkdir -p /home/solid/t/src/smartlib
mkdir -p /home/solid/t/src/smarttables
mkdir -p /home/solid/t/src/smartinclude
mkdir -p /home/solid/t/src/../bin
cp *.h /home/solid/t/src/smartinclude
cp eigensrc/*.h /home/solid/t/src/smartinclude
cp nicksrc/*.h /home/solid/t/src/smartinclude
ar -r libnick.a strsubs.o sortit.o vsubs.o statsubs.o linsubs.o getpars.o xsearch.o gauss.o gds.o
cp libnick.a /home/solid/t/src/smartlib/nicklib.a
gcc -I/home/solid/t/src/smartinclude -pthread -o smartpca smartpca.o twsubs.o mcio.o qpsubs.o admutils.o egsubs.o regsubs.o eigsubs.o eigx.o /home/solid/t/src/smartlib/nicklib.a -L/usr/lib -lg2c -lm -llapack -latlas -lblas -Wimplicit
/usr/bin/ld: cannot find -lg2c
collect2: ld returned 1 exit status
make: *** [smartpca] Error 1
solid@ubuntu:~/t/src$

can anyone tell me how can i fix this error? and lg2c is required for what purpose

Thanks
Hersh

[borgene]

I have the same problem. I assume that the libg2c0 package has to be installed.
I took a look at the Makefile, I think that atlan and blas will also need to be installed to get EIGENSOFT compiled.
(I can not yet report results, I'm fighting with a firewall.)

[digitrev]

I'm in the same boat. It seems that the upgrade to Koala uninstalled my nice shiny libg2c.s0.0 file. Another way to put it is


/usr/lib $ ll libg2c.s0
lrwxrwxrwx 1 root root 11 2009-09-30 14:12 libg2c.so -> libg2c.so.0


In other words, I now have a soft link pointing absolutely nowhere. Is this something I can fix?

[fabio.hipolito]

Hello,

I was facing the same problem with LAPACK and ARPACK libraries:

LAPACK error!


owl@owl-laptop:~/Master/Nanoribbons/ArmChair$ make
gfortran -o aPROG -ffixed-line-length-120 ribbon.f -llapack
/usr/bin/ld: cannot find -llapack
collect2: ld returned 1 exit status
make: *** [aPROG] Error 1
owl@owl-laptop:~/Master/Nanoribbons/ArmChair$

ARPACK error!


owl@owl-laptop:~/Master/ABchains/ABchainARPACK$ make
gfortran -o aPROG -ffixed-line-length-120 linLattice.f -larpack
/usr/bin/ld: cannot find -larpack
collect2: ld returned 1 exit status
make: *** [aPROG] Error 1
owl@owl-laptop:~/Master/ABchains/ABchainARPACK$

I followed advise from "hokim" at ubuntuforums thread "How to link lapack & blas?"

http://ubuntuforums.org/showthread.php?t=70001&highlight=%2Fusr%2Fbin%2Fld%3A+find+-llapack

where he recommend installing *-dev and *-headers (* stands for the library name) packages.


How about trying atlas3-base,atlas3-base-dev and atlas3-headers?
atlas3-headers have clapack.h but not cblas.h which, I think, is missed.
But you can get cblas.h from 'sudo apt-get source atlas3-headers'

So open Synapatic or install via aptitude the following library:


liblapack-dev

this has a few dependecies, such as:


libblas-dev
libatlas-dev
...

and solved the LAPACK linking problem, in order to solve the ARPACK problem I installed:


libarapack-dev

and its respective dependencies.

It worked for me, hope it is usefull,
Best regards.

[repettus]

I also have this problem.
I tried
cd /usr/lib
ln -s libg2c.so.0 libg2c.so from http://www.linuxquestions.org/questions/linux-software-2/usrbinld-cannot-find-lg2c-654276/

but no luck. Now this yields another error message"/usr/bin/ld: skipping incompatible /usr/lib64/libg2c.so when searching for -lg2c".

I am trying to compile RIP4 in Ubuntu 9.1 64 bit(grads metafile converter).