[plt-dev] Cygwin 1.7.1-1 build question: undefined reference to `_scheme_add_namespace_option'

Hi,

Building trunk on Cygwin 1.7.1-1 on Windows XP, the build errors out here:

<snip>
make mzschemecgc
make[3]: Entering directory `/home/grettke/scheme/plt/src-trunk/src/build/mzsche
me'
gcc -I. -I../../mzscheme/include -g -O2  -Wall     -DINITIAL_COLLECTS_DIRECTORY=
'"'"`cd ../../mzscheme/../../collects; pwd`"'"' -c ../../mzscheme/main.c -o main
.o
gcc -o mzschemecgc main.o  libmzscheme.a libmzgc.a  -ldl -lm  -liconv
libmzscheme.a(dynext.o): In function `scheme_init_dynamic_extension':
/home/grettke/scheme/plt/src-trunk/src/build/mzscheme/src/../../../mzscheme/src/
schemex.inc:540: undefined reference to `_scheme_add_namespace_option'
<snip>

I think that I've got everything installed that it needs as configure
didn't bail; I had followed the "build dir" simple approach of mkdir
build, cd build, ..configure, make, make install from the src dir as
per the docs.

Is this a cutting-edge trunk thing that I should wait out?

Or, may you please advise me on how I may go about debugging this? I'm
not sure where to start. Nothing showed up in search on this, either.

Best wishes,

Grant