Hi!
I'm trying to compile an emby 2.2 in windows with cygwin, but I can't.

Sorry for my bad english :/

comm.c: En la función ‘install_other_handlers’:
comm.c:4721:3: aviso: declaración implícita de la función ‘sigsetmask’ [-Wimplicit-function-declaration]
   sigsetmask (sigmask (SIGPIPE));
   ^
comm.c:4721:3: aviso: declaración implícita de la función ‘sigmask’ [-Wimplicit-function-declaration]
Makefile:31: recipe for target '.obj/comm.o' failed
make: *** [.obj/comm.o] Error 1

So comm.c is probably missing the line

#include <signal.h>

somewhere near the top of the file.

But you've clearly omitted all of the important parts of the compiler's output, so I have no idea whether this will be enough to fix things for you. Where's the rest of the output?