Are you using the trunk's version of STLPort? The STLPort in trunk has modifications for use in android. Though it assumes it doesn't have RTTI and exceptions. You would need to add -D__ANDROID__ as well, since it is this that STLPort checks for. I'm still trying to compile and your email was *very* valuable. Maybe creating a android.jam in the tools/ dir in boost.build would be better.
Glad the post has been helpful -- I probably should have re-tested without the STLPort references. Originally I had been using the standard non-modified NDK and the STLPort from the "ndk-wrappers" posts found on the NDK group. Later I found RTTI and exceptions just too hard to live without and upgraded to the Crystax modified NDK which contains it's own STL (no need for a external STLPort). I'll try re-compiling without any STLPort references now. A android.jam would be great -- So far I've found the jam build system very overwhelming though... I have no clue where to start on something like that. Bryan