diff --git a/file.h b/file.h
new file mode 100644
index 00000000..7dd8e744
--- /dev/null
+++ b/file.h
@@ -0,0 +1,94 @@
+/* Copyright (C) 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Make is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Make; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Structure that represents the info on one file
+   that the makefile says how to make.
+   All of these are chained together through `next'.  */
+
+struct file
+  {
+    struct file *next;
+    char *name;
+    struct dep *deps;
+    struct commands *cmds;	/* Commands to execute for this target */
+    char *stem;			/* Implicit stem, if an implicit
+    				   rule has been used */
+    struct dep *also_make;	/* Targets that are made by making this.  */
+    time_t last_mtime;		/* File's modtime, if already known.  */
+    struct file *prev;		/* Previous entry for same file name;
+				   used when there are multiple double-colon
+				   entries for the same file.  */
+
+    /* File that this file was renamed to.  After any time that a
+       file could be renamed, call `check_renamed' (below).  */
+    struct file *renamed;
+
+    /* List of variable sets used for this file.  */
+    struct variable_set_list *variables;
+
+    /* Immediate dependent that caused this target to be remade,
+       or nil if there isn't one.  */
+    struct file *parent;
+
+    short int update_status;	/* Status of the last attempt to update,
+				   or -1 if none has been made.  */
+
+    enum			/* State of the commands.  */
+      {		/* Note: It is important that cs_not_started be zero.  */
+	cs_not_started,		/* Not yet started.  */
+	cs_deps_running,	/* Dep commands running.  */
+	cs_running,		/* Commands running.  */
+	cs_finished		/* Commands finished.  */
+      } command_state ENUM_BITFIELD (2);
+
+    unsigned int double_colon:1;/* Nonzero for double-colon entry */
+    unsigned int precious:1;	/* Non-0 means don't delete file on quit */
+    unsigned int tried_implicit:1;/* Nonzero if have searched
+				     for implicit rule for making
+				     this file; don't search again.  */
+    unsigned int updating:1;	/* Nonzero while updating deps of this file */
+    unsigned int updated:1;	/* Nonzero if this file has been remade.  */
+    unsigned int is_target:1;	/* Nonzero if file is described as target.  */
+    unsigned int cmd_target:1;	/* Nonzero if file was given on cmd line.  */
+    unsigned int phony:1;	/* Nonzero if this is a phony file
+				   ie, a dependent of .PHONY.  */
+    unsigned int intermediate:1;/* Nonzero if this is an intermediate file.  */
+    unsigned int dontcare:1;	/* Nonzero if no complaint is to be made if
+				   this target cannot be remade.  */
+  };
+
+/* Number of intermediate files entered.  */
+
+extern unsigned int num_intermediates;
+
+extern struct file *default_goal_file, *suffix_file, *default_file;
+
+
+extern struct file *lookup_file (), *enter_file ();
+extern void remove_intermediates (), snap_deps ();
+extern void rename_file ();
+
+
+extern time_t f_mtime ();
+#define file_mtime_1(f, v) \
+  ((f)->last_mtime != (time_t) 0 ? (f)->last_mtime : f_mtime ((f), v))
+#define file_mtime(f) file_mtime_1 ((f), 1)
+#define file_mtime_no_search(f) file_mtime_1 ((f), 0)
+
+
+#define check_renamed(file) \
+  while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here.  */