octave compile error

[Oliver Pinter]

Hi all!

this is the error:

gmake -C src all
gmake[2]: Entering directory `/usr/ports/math/octave/work/octave-3.2.2/src'
making defaults.h from defaults.h.in
defaults.h is unchanged
making oct-conf.h from oct-conf.h.in
oct-conf.h is unchanged
making DOCSTRINGS
/libexec/ld-elf.so.1: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.11 required b
y ./gendoc not found
gmake[2]: *** [DOCSTRINGS] Error 1
gmake[2]: Leaving directory `/usr/ports/math/octave/work/octave-3.2.2/src'
gmake[1]: *** [src] Error 2
gmake[1]: Leaving directory `/usr/ports/math/octave/work/octave-3.2.2'
gmake: *** [all] Error 2
*** Error code 1

Stop in /usr/ports/math/octave.

and the system:
FreeBSD fbsd 7.2-STABLE FreeBSD 7.2-STABLE #9: Tue Sep 15 04:10:15
CEST 2009     root at fbsd:/usr/obj/usr/src/sys/stable  amd64