problem with installing symbolic toolbox

[Mukesh]

i m a newbie for octave. basically i m a matlab user but now i dont hav access 
to that and i need to move to octave. i installed octave-2.1.71 a couple of 
days back. but unfortunatelty the most needful package symbolic toolbox was not 
there. i found symbolic toolbox from net developed by ben sapp. i installed all 
the required packages (ginac-1.3.2 + cln-1.1.9) but no success. there was some 
errors.

-------------------------------------------------------------------------
In file included from src/symbols.cc:32:
src/ov-vpa.h: In constructor `octave_vpa::octave_vpa(const GiNaC::ex&)':
src/ov-vpa.h:62: `ex_to_numeric' undeclared in namespace `GiNaC'
-------------------------------------------------------------------------

I found another option octave-forge-2005.06.13 that gives latest symbolic
toolbox and lot more. but unfortunately when i tried installing it,
there was some error during make. 

-------------------------------------------------------------------------
g++ -c -fPIC -I/usr/local/include/octave-2.1.71 
-I/usr/local/include/octave-2.1.71/octave -I/usr/local/include -mieee-fp -g -O2 
-DHAVE_OCTAVE_21 creadpdb.cc -o creadpdb.o
creadpdb.cc: In function `octave_value_list Fcreadpdb(const octave_value_list&,
  int)':
creadpdb.cc:97: `lseek' undeclared (first use this function)
creadpdb.cc:97: (Each undeclared identifier is reported only once for each
  function it appears in.)
creadpdb.cc:242: `close' undeclared (first use this function)
make[2]: *** [creadpdb.oct] Error 1
make[2]: Target `all' not remade because of errors.
-------------------------------------------------------------------------

I want to know if there is any successful way to install symbolic toolbox. I dont hav too much idea abt the makefiles.. so plz be detailed while explaing anything in that area.. 
thanx in advance!!

regards
mukesh




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