--- gforth/envos.fs.in	2007/12/31 18:40:24	1.5
+++ gforth/envos.fs.in	2008/08/09 21:26:21	1.9
@@ -1,6 +1,6 @@
 \ envos.fs set os-specific environmental queries 	07jul97jaw
 
-\ Copyright (C) 1997,1999,2000,2003,2006,2007 Free Software Foundation, Inc.
+\ Copyright (C) 1997,1999,2000,2003,2006,2007,2008 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
@@ -29,3 +29,15 @@ set-current
 : libtool-command ( -- c-addr u ) \ gforth
 \G name of the GNU libtool command
     s" @GNU_LIBTOOL@" ;
+
+: libtool-cc ( -- c-addr u ) \ gforth
+\G invocation string of the C compiler used for libtool
+    s" @CC@" ;
+
+\ test for the presence of libffi or ffcall
+@FFCALLFLAG@ constant ffcall-present \ libffi present (on building)
+@LIBFFIFLAG@ constant libffi-present \ ffcall libs present (on building)
+
+: include-ffi.h-string ( -- c-addr u )
+  s" #include <@FFI_H_NAME@>" ;
+