Link OpenBLAS64 only if not using MKL

src/make.inc

@@ -98,9 +98,11 @@ override CXXLDFLAGS=-L/usr/lib64 -L$(HDF5_LIB) -lhdf5 $(STATICFLAG)
 ifdef USE_LAPACK
 override CXXLDFLAGS+= $(LAPACK_LDFLAGS)
 ifdef USE_OPENMP
+ifndef USE_MKL
 override CXXLDFLAGS+= -lopenblas64
 endif
 endif
+endif
 override CXXLDFLAGS+= $(LDFLAGS)
 endif