diff --git a/src/cmd/postscript/common/ext.h b/src/cmd/postscript/common/ext.h
new file mode 100644
index 0000000..e260cee
--- /dev/null
+++ b/src/cmd/postscript/common/ext.h
@@ -0,0 +1,40 @@
+/*
+ *
+ * External varibles - most are in glob.c.
+ *
+ */
+
+extern char	**argv;			/* global so everyone can use them */
+extern int	argc;
+
+extern int	x_stat;			/* program exit status */
+extern int	debug;			/* debug flag */
+extern int	ignore;			/* what we do with FATAL errors */
+
+extern long	lineno;			/* line number */
+extern long	position;		/* byte position */
+extern char	*prog_name;		/* and program name - for errors */
+extern char	*temp_file;		/* temporary file - for some programs */
+extern char	*fontencoding;		/* text font encoding scheme */
+
+extern int	dobbox;			/* enable BoundingBox stuff if TRUE */
+extern double	pageheight;		/* only for BoundingBox calculations! */
+extern double	pagewidth;
+
+extern int	reading;		/* input */
+extern int	writing;		/* and output encoding */
+
+extern char	*optarg;		/* for getopt() */
+extern int	optind;
+
+extern void	interrupt();
+//extern char	*tempnam(char*,char*);
+/* 
+ * extern char	*malloc();
+ * extern char	*calloc();
+ * extern char	*strtok();
+ * extern long	ftell();
+ * extern double	atof();
+ * extern double	sqrt();
+ * extern double	atan2();
+ */