diff -aur grass-6.2.3.orig/raster/r.terraflow/IOStream/include/ami_stream.h grass-6.2.3/raster/r.terraflow/IOStream/include/ami_stream.h
--- grass-6.2.3.orig/raster/r.terraflow/IOStream/include/ami_stream.h	2004-11-09 14:29:58.000000000 +0100
+++ grass-6.2.3/raster/r.terraflow/IOStream/include/ami_stream.h	2008-03-21 01:03:36.000000000 +0100
@@ -51,6 +51,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <unistd.h>
+#include <cstring>
 
 #include <iostream>
 using namespace std;