make.check-mkl

# check for MKL directory and give user hint how to set it
ifeq ($(MKLROOT),)
    vars_sh  := $(shell which icc 2>/dev/null | perl -pe 's|/bin.*/icc|/mkl/bin/mklvars.sh|')
    vars_csh := $(shell which icc 2>/dev/null | perl -pe 's|/bin.*/icc|/mkl/bin/mklvars.csh|')
    ifeq ($(vars_sh),)
        vars_sh  := /opt/intel/composerxe/mkl/bin/mklvars.sh
        vars_csh := /opt/intel/composerxe/mkl/bin/mklvars.csh
    endif
$(error Set $$MKLROOT, preferably in your environment, e.g., run "source $(vars_sh) intel64" in ~/.bashrc, or "source $(vars_csh) intel64" in ~/.cshrc)
endif

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