build on cygwin enabled

AUTHORS

@@ -4,6 +4,7 @@ Contributors
 Alexej Lotz
 Asko Kauppi
 Barak Amar
+Bernd Prager
 Chris Wong
 Conrad D. Steenberg
 Dhruva Krishnamurthy

configure.in

@@ -200,6 +200,9 @@ case "${host_os}" in
         on_mingw32="yes"
         install_man="no"
         ;;
+    *cygwin*)
+        AC_DEFINE(ZMQ_HAVE_CYGWIN, 1, [Have Cygwin])
+        ;;
     *)
         AC_MSG_ERROR([unsupported system: ${host_os}.])
         ;;

src/poller.hpp

@@ -61,6 +61,8 @@ namespace zmq
     typedef devpoll_t poller_t;
 #elif defined ZMQ_HAVE_OPENVMS
     typedef select_t poller_t;
+#elif defined ZMQ_HAVE_CYGWIN
+    typedef select_t poller_t;
 #else
 #error Unsupported platform
 #endif