diff -ur /usr/ports-old/math/octave/Makefile Makefile
--- /usr/ports-old/math/octave/Makefile	2008-09-07 20:31:50.000000000 -0500
+++ Makefile	2008-09-18 23:20:37.000000000 -0500
@@ -25,7 +25,10 @@
 		glpk.16:${PORTSDIR}/math/glpk \
 		hdf5:${PORTSDIR}/science/hdf5 \
 		umfpack.1:${PORTSDIR}/math/suitesparse \
-		qhull:${PORTSDIR}/math/qhull
+		qhull:${PORTSDIR}/math/qhull \
+		ptmalloc:${PORTSDIR}/devel/ptmalloc
+
+CONFIGURE_ENV+=	LIBS="-L${LOCALBASE}/lib -lptmalloc"
 
 LATEST_LINK=    octave-devel