[plt-scheme] v300 - cygwin build errors

Somewhat related to my previous error report - I planned to see if things  
work better with a cygwin-built mzscheme. But the build, well, fails:

make[6]: Entering directory `/cygdrive/e/ittai/tmp/plt/src/mzscheme/src'
gcc -g -O2  -Wall     -I./.. -I./../include -c ./network.c -o network.o
./network.c: In function `scheme_get_host_address':
./network.c:703: error: storage size of 'hints' isn't known
./network.c:716: error: invalid application of `sizeof' to incomplete type  
`addr
info'
./network.c:719: error: `AI_PASSIVE' undeclared (first use in this  
function)
./network.c:719: error: (Each undeclared identifier is reported only once
./network.c:719: error: for each function it appears in.)
...
...

I get the same with 300.1

I ran configure with --prefix=/usr/local/plt --enable-shared, but I tried  
without --enable-shared as well.

Thanks
-- 
Ittai