$ uname -s -r -v -m -o
CYGWIN_NT-6.1-WOW64 1.7.17(0.262/5/3) 2012-10-19 14:39 i686 Cygwin

$ bzr pull
$ ./autogen.sh
$ env CFLAGS="-ggdb3 -O2" ./configure --with-w32 --without-x --enable-check-lisp-object-type
$ make bootstrap

...
gcc -std=gnu99 -c -I/usr/include/noX -Demacs  -I. -I/home/tetsurou/Checkout/bzr.savannah.gnu.org/emacs/local/src  -I../lib -I/home/tetsurou/Checkout/bzr.savannah.gnu.org/emacs/local/src/../lib           -I/usr/include/libxml2           -MMD -MF deps/w32fns.d -MP   -I/usr/include/p11-kit-1      -ggdb3 -O2 w32fns.c
w32fns.c: In function ‘Fx_show_tip’:
w32fns.c:5795:26: error: request for member ‘i’ in something not a structure or union
Makefile:327: recipe for target `w32fns.o' failed
make[2]: *** [w32fns.o] Error 1