can't find qhull and HDF5 libs on octave 3.0 installing

[guez offtsing]

hellow, I try to build octave3 from source on Suse Enterprise Server 9.
But octave
cannot find the qhull lib, so does HDF5.

linux:~/octave-3.0.0 # uname -a
Linux linux 2.6.5-7.191-sn2 #1 SMP Tue Jun 28 14:58:56 UTC 2005 ia64
ia64 ia64 GNU/Linux

linux:~/octave-3.0.0 #./configure CPPFLAGS=-I/usr/local/include
LDFLAGS=-L/usr/local/lib |grep -E "qhull|hdf5"
-------------------------
checking qhull/qhull_a.h usability... no
checking qhull/qhull_a.h presence... no
checking for qhull/qhull_a.h... no
configure: WARNING: Qhull library not found --- This will result in loss
of functionality of some geometry functions.
checking for H5Pcreate in -lhdf5... no
configure: WARNING: HDF5 library not found.  Octave will not be able to
save or load HDF5 data files.
--------------------------
libqhull.a is compiled and put in /usr/local/lib
header files put in dir /usr/local/include/qhull

HDF5 v1.8.0 installed in /usr/local/hdf5, but I copy the .a files and 
.h files to /usr/local/lib & include, too.

Why octave cannot find them? Btw, Sparse suite put in the same paths
don't have any problems.