--- a/auto/modules
+++ b/auto/modules
@@ -1,3 +1,42 @@
+
+if [ $EVENT_SELECT = NO -a $EVENT_FOUND = NO ]; then
+    EVENT_SELECT=YES
+fi
+
+if [ $EVENT_SELECT = YES ]; then
+    CORE_SRCS="$CORE_SRCS $SELECT_SRCS"
+    EVENT_MODULES="$EVENT_MODULES $SELECT_MODULE"
+fi
+
+
+if [ $EVENT_POLL = NO -a $EVENT_FOUND = NO ]; then
+    EVENT_POLL=YES
+fi
+
+if [ $EVENT_POLL = YES ]; then
+    CORE_SRCS="$CORE_SRCS $POLL_SRCS"
+    EVENT_MODULES="$EVENT_MODULES $POLL_MODULE"
+fi
+
+
+if [ $TEST_BUILD_DEVPOLL = YES ]; then
+    CFLAGS="$CFLAGS -D HAVE_DEVPOLL=1 -D TEST_BUILD_DEVPOLL=1"
+    EVENT_MODULES="$EVENT_MODULES $DEVPOLL_MODULE"
+    CORE_SRCS="$CORE_SRCS $DEVPOLL_SRCS"
+fi
+
+if [ $TEST_BUILD_EPOLL = YES ]; then
+    CFLAGS="$CFLAGS -D HAVE_EPOLL=1 -D TEST_BUILD_EPOLL=1"
+    EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE"
+    CORE_SRCS="$CORE_SRCS $EPOLL_SRCS"
+fi
+
+if [ $TEST_BUILD_SIGIO = YES ]; then
+    CFLAGS="$CFLAGS -D HAVE_SIGIO=1 -D TEST_BUILD_SIGIO=1"
+    EVENT_MODULES="$EVENT_MODULES $SIGIO_MODULE"
+    CORE_SRCS="$CORE_SRCS $SIGIO_SRCS"
+fi
+
 
 HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES \
                      $HTTP_CHUNKED_FILTER_MODULE \