>> (SHA256) lapack-3.1.1.tgz: OK
===>  lapack-3.1.1p2 depends on: blas-* - not found
===>  Verifying install for blas-* in math/blas
===>  Building for blas-1.0p4
Can't open /usr/ports/pobj/blas-1.0/lapack-3.2.0/manpages/blas/man/manl/*.l: No such file or directory.
/bin/sh: cd: /usr/ports/pobj/blas-1.0/lapack-3.2.0/manpages/blas/man/manl - No such file or directory
*** Error code 1

Stop in /usr/ports/math/blas (line 51 of Makefile).
*** Error code 1

Stop in /usr/ports/math/blas (line 2473 of /usr/ports/infrastructure/mk/bsd.port.mk).