DOCSTRINGS error while building a 64 bit version of 3.50 for OS X

[Liam Groener]

I've been trying to build a 64 bit version of the development version of Octave 
for OS X 10.6. Today, I got a different type of error than the ones I've gotten 
before and this time I don't know how to proceed. The error message is:

make[4]: `munge-texi' is up to date.
./munge-texi ../.. ../../scripts/DOCSTRINGS ../../src/DOCSTRINGS < var.txi > 
var.texi-t
mv var.texi-t var.texi
../../run-octave -f -q -H -p . --eval "geometryimages ('voronoi', 'txt');"
dyld: Symbol not found: 
__ZNSt15basic_stringbufIcSt11char_traitsIcESaIcEE7seekoffElSt12_Ios_SeekdirSt13_Ios_Openmode
  Referenced from: 
/Users/liamg/build45/octave/src/.libs/liboctinterp-3.3.50+.dylib
  Expected in: flat namespace
 in /Users/liamg/build45/octave/src/.libs/liboctinterp-3.3.50+.dylib
make[3]: *** [voronoi.txt] Trace/BPT trap
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Any ideas on what I should try next? Maybe a missing header in one of my 
sources?

Liam G.