Use -fdefault-integer-8 when building lapack from source against ILP64 system blas

and link cholmod to lapack, needs dpotrf

Author: tkelman

deps/Makefile

@@ -1284,6 +1284,9 @@ install-atlas: $(ATLAS_OBJ_TARGET)
 
 ## Mac gfortran BLAS wrapper ##
 GFORTBLAS_FFLAGS :=
+ifeq ($(USE_BLAS64), 1)
+GFORTBLAS_FFLAGS += -fdefault-integer-8
+endif
 ifeq ($(OS),Darwin)
 ifeq ($(USE_SYSTEM_BLAS),1)
 ifeq ($(USE_SYSTEM_LAPACK),0)
@@ -1711,7 +1714,7 @@ $(SUITESPARSE_OBJ_TARGET): $(SUITESPARSE_OBJ_SOURCE)
 	$(INSTALL_NAME_CMD)libcamd.$(SHLIB_EXT) $(build_shlibdir)/libcamd.$(SHLIB_EXT) && \
 	$(CC) -shared $(WHOLE_ARCHIVE) libccolamd.a $(NO_WHOLE_ARCHIVE) -o $(build_shlibdir)/libccolamd.$(SHLIB_EXT) $(LDFLAGS) -L$(build_shlibdir) -lsuitesparseconfig $(RPATH_ORIGIN) && \
 	$(INSTALL_NAME_CMD)libccolamd.$(SHLIB_EXT) $(build_shlibdir)/libccolamd.$(SHLIB_EXT) && \
-	$(CXX) -shared $(WHOLE_ARCHIVE) libcholmod.a $(NO_WHOLE_ARCHIVE) -o $(build_shlibdir)/libcholmod.$(SHLIB_EXT) $(LDFLAGS) -L$(build_shlibdir) -lcolamd -lamd -lcamd -lccolamd -lsuitesparseconfig $(LIBBLAS) $(RPATH_ORIGIN) && \
+	$(CXX) -shared $(WHOLE_ARCHIVE) libcholmod.a $(NO_WHOLE_ARCHIVE) -o $(build_shlibdir)/libcholmod.$(SHLIB_EXT) $(LDFLAGS) -L$(build_shlibdir) -lcolamd -lamd -lcamd -lccolamd -lsuitesparseconfig $(LIBLAPACK) $(LIBBLAS) $(RPATH_ORIGIN) && \
 	$(INSTALL_NAME_CMD)libcholmod.$(SHLIB_EXT) $(build_shlibdir)/libcholmod.$(SHLIB_EXT) && \
 	$(CXX) -shared $(WHOLE_ARCHIVE) libumfpack.a $(NO_WHOLE_ARCHIVE) -o $(build_shlibdir)/libumfpack.$(SHLIB_EXT) $(LDFLAGS) -L$(build_shlibdir) -lcholmod -lcolamd -lamd -lsuitesparseconfig $(LIBBLAS) $(RPATH_ORIGIN) && \
 	$(INSTALL_NAME_CMD)libumfpack.$(SHLIB_EXT) $(build_shlibdir)/libumfpack.$(SHLIB_EXT) && \