File baselibs.conf of Package lapack
liblapack3 libblas3 lapack requires "liblapack3-<targettype> = <version>" blas requires -lapack-<targettype> requires "libblas3-<targettype> = <version>"
liblapack3 libblas3 lapack requires "liblapack3-<targettype> = <version>" blas requires -lapack-<targettype> requires "libblas3-<targettype> = <version>"