diff --git a/math/suitesparse/Makefile b/math/suitesparse/Makefile
index 11d6657abc78..813d6962c56b 100644
--- a/math/suitesparse/Makefile
+++ b/math/suitesparse/Makefile
@@ -16,12 +16,19 @@ COMMENT=	UFspace is a set of packages for sparse matrices calculation
 
 BUILD_DEPENDS=  ${LOCALBASE}/lib/libmetis.a:${PORTSDIR}/math/metis
 
+.if defined(WITH_BLAS)
+LIB_DEPENDS+=	blas.1:${PORTSDIR}/math/blas
+BLAS=	-L${LOCALBASE}/lib -lblas
+LAPACK=	-L${LOCALBASE}/lib -llapack
+.else
+LIB_DEPENDS+=	atlas.1:${PORTSDIR}/math/atlas
+BLAS=	-L${LOCALBASE}/lib -lf77blas -latlas -lg2c
+LAPACK=	-L${LOCALBASE}/lib -lalapack -lcblas
+.endif
+
 USE_GMAKE=	yes
 ALL_TARGET=
 
-BLAS=		-L${LOCALBASE}/lib -lf77blas -latlas -lg2c
-LAPACK=		-L${LOCALBASE}/lib -lalapack -lcblas
-
 post-patch:
 	@${REINPLACE_CMD} -e 's,%%CC%%,${CC},g' \
 			  -e 's,%%CFLAGS%%,${CFLAGS},g' \
diff --git a/math/ufsparse/Makefile b/math/ufsparse/Makefile
index 11d6657abc78..813d6962c56b 100644
--- a/math/ufsparse/Makefile
+++ b/math/ufsparse/Makefile
@@ -16,12 +16,19 @@ COMMENT=	UFspace is a set of packages for sparse matrices calculation
 
 BUILD_DEPENDS=  ${LOCALBASE}/lib/libmetis.a:${PORTSDIR}/math/metis
 
+.if defined(WITH_BLAS)
+LIB_DEPENDS+=	blas.1:${PORTSDIR}/math/blas
+BLAS=	-L${LOCALBASE}/lib -lblas
+LAPACK=	-L${LOCALBASE}/lib -llapack
+.else
+LIB_DEPENDS+=	atlas.1:${PORTSDIR}/math/atlas
+BLAS=	-L${LOCALBASE}/lib -lf77blas -latlas -lg2c
+LAPACK=	-L${LOCALBASE}/lib -lalapack -lcblas
+.endif
+
 USE_GMAKE=	yes
 ALL_TARGET=
 
-BLAS=		-L${LOCALBASE}/lib -lf77blas -latlas -lg2c
-LAPACK=		-L${LOCALBASE}/lib -lalapack -lcblas
-
 post-patch:
 	@${REINPLACE_CMD} -e 's,%%CC%%,${CC},g' \
 			  -e 's,%%CFLAGS%%,${CFLAGS},g' \