--- iothread.cpp.orig
+++ iothread.cpp
@@ -11,6 +11,7 @@
#include <signal.h>
#include <fcntl.h>
#include <queue>
+#include <sys/select.h>
#ifdef _POSIX_THREAD_THREADS_MAX
#if _POSIX_THREAD_THREADS_MAX < 64