File pwlib-gcc7.patch of Package pwlib

Index: pwlib_v1_11_0/src/ptlib/unix/channel.cxx
===================================================================
--- pwlib_v1_11_0.orig/src/ptlib/unix/channel.cxx
+++ pwlib_v1_11_0/src/ptlib/unix/channel.cxx
@@ -161,6 +161,7 @@
 
 #include <ptlib.h>
 #include <sys/ioctl.h>
+#include <sys/uio.h>
 
 
 #include "../common/pchannel.cxx"