--- libeio/configure.ac	2008/05/11 01:00:03	1.3
+++ libeio/configure.ac	2008/10/22 18:15:36	1.4
@@ -13,6 +13,9 @@
   CFLAGS="$CFLAGS -O3"
 fi
 
+dnl somebody will forgive me
+CFLAGS="-D_GNU_SOURCE"
+
 m4_include([libeio.m4])
 
 AC_CONFIG_FILES([Makefile])