On 09/02/2010 06:25 AM, Jussi Lehtola wrote:
On Thu, 02 Sep 2010 09:55:58 +0300 Henrik Mannerströmhenrik.mannerstrom@gmail.com wrote:
Hello,
On my Fedora 11, when I try to compile a program that uses BLAS the linking fails:
/usr/bin/ld: cannot find -lcblas
I have packages blas, blas-devel, atlas and atlas-devel installed. There exists a symlink for libcblas.so: /usr/lib64/atlas/libcblas.so -> ./libcblas.so.3.0 but 'ldconfig-p' does not find it, only the so.3-file: libcblas.so.3 (libc6,x86-64) => /usr/lib64/atlas/libcblas.so.3 .
What should I do to be able to compile programs with BLAS and LAPACK? Do I need to complete the installation of the devel-packages by hand?
You need to pass the linker option -L/usr/lib64/atlas so that the linker finds the libraries.
The OP should also check /etc/ld.so.conf.d and verify that there is an atlas-x86_64.conf file in there. If not:
# echo "/usr/lib64/atlas" >/etc/ld.so.conf.d/atlas-x86_64.conf
Then, as root, run "ldconfig -v". This will remove the need to specify the "-L" option to the linker. ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, C2 Hosting ricks@nerd.com - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - First Law of Work: - - If you can't get it done in the first 24 hours, work nights. - ----------------------------------------------------------------------