Index: head/converters/pdf2djvu/files/patch-sys-uuid.cc
===================================================================
--- head/converters/pdf2djvu/files/patch-sys-uuid.cc
+++ head/converters/pdf2djvu/files/patch-sys-uuid.cc
@@ -0,0 +1,11 @@
+--- sys-uuid.cc.orig	2019-06-23 11:41:41 UTC
++++ sys-uuid.cc
+@@ -17,6 +17,8 @@
+ #include "autoconf.hh"
+ #include "system.hh"
+ 
++#include <cstring>
++
+ #if WIN32
+ 
+ #include <cassert>