diff -urN a2ps-4.13.orig/lib/path-concat.c a2ps-4.13/lib/path-concat.c
--- a2ps-4.13.orig/lib/path-concat.c	1999-10-10 22:34:46 +0400
+++ a2ps-4.13/lib/path-concat.c	2005-01-15 21:25:52 +0300
@@ -31,7 +31,6 @@
 #endif
 #include <sys/types.h>
 
-char *malloc ();
 
 #ifndef DIRECTORY_SEPARATOR
 # define DIRECTORY_SEPARATOR '/'