Index: reportlab-3.5.56/src/rl_addons/renderPM/gt1/gt1-namecontext.c
===================================================================
--- reportlab-3.5.56.orig/src/rl_addons/renderPM/gt1/gt1-namecontext.c
+++ reportlab-3.5.56/src/rl_addons/renderPM/gt1/gt1-namecontext.c
@@ -1,6 +1,10 @@
 /* A module for a simple "name context", i.e. lisp-style atoms */
 
 #include "gt1-misc.h"
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/socket.h>
 
 #include "gt1-namecontext.h"
 #if defined(_WIN32) || defined(macintosh) || defined(__APPLE__)