diff -u -r ../nettle-3.3/configure ./configure
--- ../nettle-3.3/configure	2016-10-01 09:28:38.000000000 +0200
+++ ./configure	2017-07-07 08:35:12.539208424 +0200
@@ -7091,6 +7091,7 @@
   CFLAGS="$CFLAGS $CCPIC"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
+#include <stdlib.h>
 
 int
 main ()