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Editorial Team
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Asked: 2026-06-16T03:42:13+00:00

The messages are below: $:~/software/version_1.02/example$ gcc -Wall -Wextra example.c -I../include -L../lib -lnnmf -larpack -llapack

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The messages are below:

$:~/software/version_1.02/example$ gcc -Wall -Wextra example.c -I../include -L../lib -lnnmf -larpack -llapack \
-lblas -o main
In file included from example.c:47:
../include/nmfdriver.h:92:7: warning: no newline at end of file
example.c:53: warning: unused parameter ‘argc’
example.c:53: warning: unused parameter ‘argv’
/usr/bin/ld: cannot find -larpack
collect2: ld returned 1 exit status
$:~/software/version_1.02/example$ ls /usr/lib/*arpack*
/usr/lib/libarpack.so.2  /usr/lib/libarpack.so.2.0.0

The arpack is installed by yum (package manager). I was wondering why it can’t be found.
Does anyone have ideas about how to solve this?

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1 Answer

  1. Editorial Team

    It might be looking for the libraries without the version suffixes.
    Try making a link without a version suffix to one of the versioned ones:

    sudo ln -s /usr/lib/arpack.so.2 /usr/lib/arpack.so
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