--- SUMA/gts/examples/happrox.c.orig	2019-05-21 18:01:41 UTC
+++ SUMA/gts/examples/happrox.c
@@ -20,7 +20,7 @@
 #include <math.h>
 #include <stdlib.h>
 #include <string.h>
-#include <pgm.h>
+#include <netpbm/pgm.h>
 #include "config.h"
 #ifdef HAVE_GETOPT_H
 #  include <getopt.h>