Can't link atlas or cblas libraries

[Rick Stevens]

On 09/02/2010 06:25 AM, Jussi Lehtola wrote:
> On Thu, 02 Sep 2010 09:55:58 +0300
> Henrik Mannerström<henrik.mannerstrom at 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.
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