--- boost_1_35_0/tools/jam/src/make1.c	2007-11-28 08:21:49.000000000 +0100
+++ boost_1_35_0-gil/tools/jam/src/make1.c	2008-07-21 12:26:16.000000000 +0200
@@ -60,12 +60,13 @@
 # include "make.h"
 # include "command.h"
 # include "execcmd.h"
+# include "debug.h"
 # include "compile.h"
 # include "output.h"
 
 # include <stdlib.h>
 
-#if defined(sun) || defined(__sun)
+#if defined(sun) || defined(__sun) || defined(unix) || defined(__unix)
 #include <unistd.h> /* for unlink */
 #endif