error building 0.9.1 on Cygwin

[Kevin Worthington]

Got the following error when building in Cygwin on Windows 7 Ultimate.
Any help is appreciated...

                -o objs/src/os/unix/ngx_time.o \
                src/os/unix/ngx_time.c
gcc -c -pipe  -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Wunused-functio
n -Wunused-variable -Wunused-value -Werror -g -D FD_SETSIZE=2048 -I src/core -I
src/event -I src/event/modules -I src/os/unix -I ~/openssl-0.9.8l/.openssl/inclu
de -I objs \
                -o objs/src/os/unix/ngx_errno.o \
                src/os/unix/ngx_errno.c
src/os/unix/ngx_errno.c: In function `ngx_strerror':
src/os/unix/ngx_errno.c:36: error: `NGX_SYS_NERR' undeclared (first use in this
function)
src/os/unix/ngx_errno.c:36: error: (Each undeclared identifier is reported only
once
src/os/unix/ngx_errno.c:36: error: for each function it appears in.)
src/os/unix/ngx_errno.c: In function `ngx_strerror_init':
src/os/unix/ngx_errno.c:57: error: `NGX_SYS_NERR' undeclared (first use in this
function)
make[1]: *** [objs/src/os/unix/ngx_errno.o] Error 1
make[1]: Leaving directory `/home/kworthington/nginx-0.9.1'
make: *** [build] Error 2

Best regards,
Kevin
--
Kevin Worthington
kworthington at gmail.com