make.check-openblas

# check for OpenBLAS + LAPACK directories and give user hint how to set them

# this assumes LAPACK is part of OpenBLAS library.

ifeq ($(OPENBLASDIR),)
$(error Set $$OPENBLASDIR, preferably in your environment, e.g., run "export OPENBLASDIR=/opt/openblas" in ~/.bashrc, or "setenv OPENBLASDIR /opt/atlas" in ~/.cshrc)
endif

ifeq ($(wildcard $(OPENBLASDIR)),)
$(error $$OPENBLASDIR=$(OPENBLASDIR) does not exist. Please set $$OPENBLASDIR to where OPENBLAS is installed.)
endif