liblapacke64-dev 3.9.0-1build1 (riscv64 binary) in ubuntu focal

 LAPACK version 3.X is a comprehensive FORTRAN library that does
 linear algebra operations including matrix inversions, least
 squared solutions to linear sets of equations, eigenvector
 analysis, singular value decomposition, etc. It is a very
 comprehensive and reputable package that has found extensive
 use in the scientific community.
 .
 This package contains development files for the C language library for LAPACK,
 including a static version of the library.
 Compiled with C flag "-DHAVE_LAPACK_CONFIG_H -DLAPACK_ILP64".