Beta 2 build failure using Cygwin/XP

Hi,

I tried to build Postgres on XP - and got the following message after
standard configure and make:

 > ./configure
 > ./make
...
make[2]: Leaving directory `/cygdrive/c/postgresql-8.0.0beta2/src/port'
make -C timezone all
make[2]: Entering directory `/cygdrive/c/postgresql-8.0.0beta2/src/timezone'
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes
-Wmissing-declarations -
DFRONTEND -I../../src/include   -c -o localtime.o localtime.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes
-Wmissing-declarations -
DFRONTEND -I../../src/include   -c -o strftime.o strftime.c
gcc -O2 -fno-strict-aliasing -Wall -Wmissing-prototypes
-Wmissing-declarations -
DFRONTEND -I../../src/include   -c -o pgtz.o pgtz.c
pgtz.c:105:2: #error No way to determine TZ? Can this happen?
pgtz.c: In function `get_timezone_offset':
pgtz.c:95: warning: control reaches end of non-void function
make[2]: *** [pgtz.o] Error 1
make[2]: Leaving directory `/cygdrive/c/postgresql-8.0.0beta2/src/timezone'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/cygdrive/c/postgresql-8.0.0beta2/src'
make: *** [all] Error 2

Let me know what additional files you need.

Thanks

--reto