install problems with ipc-daemon2

Hi,

I'm having trouble getting a local build of postgres to run on my pc.

I have the following installed on my system:
windows 2000, cygwin 1.5.5, cygipc-2.02-1, gcc 3.3.1-3

I successfully installed postgres-7.3.4-2 using the cygwin setup.exe file
and the following commands worked fine:
$ ipc-daemon2 &
$ initdb -D /usr/share/postgresql/data

I can manually build postgres (so that I can install postgis/GEOS) like
so:
LDFLAGS=-lstdc++ ./configure --enable-multibyte --with-CXX
--prefix=/usr --sysconfdir=/etc --docdir=/usr/doc/postgresql-7.3.4

It configures, compiles and installs just fine. Yet, when I run:
$ ipc-daemon2 &
$ initdb -D /usr/local/pgsql/share/data1

I get the following error msg:
creating template1 in database in /usr/local/pgsql/share/data/base/1...
IpcSemaphoreCreate: semget(key=1, num=17, 03600) failed: Function not
implemented

Any thoughts on why my locally built version doesn't work with
ipc-daemon2?
-Patty