--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/make-src-depend	Mon Aug 13 10:28:48 2007 +0200
@@ -0,0 +1,137 @@
+: #-*- Perl -*-
+# Copyright (C) 1998 Free Software Foundation, Inc.
+
+# This file is part of XEmacs.
+#
+# XEmacs 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.
+#
+# XEmacs 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 XEmacs; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# Author: Martin Buchholz
+eval 'exec perl -w -S $0 ${1+"$@"}'
+  if 0;
+
+use strict;
+my ($myName, $srcdir, %exists, %uses, %generated_header);
+
+($myName = $0) =~ s@.*/@@; my $usage ="
+Usage: $myName
+
+Generates Makefile dependencies for the XEmacs src directory.
+The dependencies are written to stdout.
+";
+
+die $usage if @ARGV;
+
+($srcdir = $0) =~ s@[^/]+$@@;
+chdir $srcdir or die "$srcdir: $!";
+
+opendir SRCDIR, "." or die "$srcdir: $!";
+for (grep (/\.[ch]$/, readdir (SRCDIR))) { $exists{$_} = 1; }
+closedir SRCDIR;
+
+for (qw (config.h puresize-adjust.h sheap-adjust.h paths.h Emacs.ad.h)) {
+  $generated_header{$_} = 1;
+}
+
+for my $file (keys %exists) {
+  open (FILE, $file) or die "$file: $!";
+  undef $/; $_ = <FILE>;
+  RemoveComments ($_);
+  s/[ \t]+//g;
+  # Find include dependencies
+  for (/^\#include([^\n]+)/gm) {
+    if (m@^\"([A-Za-z0-9_-]+\.h)\"@) {
+      $uses{$file}{$1} = 1 if exists $exists{$1};
+    } elsif (m@<([A-Za-z0-9_-]+\.h)>@) {
+      $uses{$file}{$1} = 1 if exists $generated_header{$1};
+    } elsif (m@\"../lwlib/([A-Za-z0-9_-]+\.h)\"@) {
+      $uses{$file}{"\$(LWLIB_SRCDIR)/lwlib.h"} = 1;
+    }
+  }
+}
+
+# Make transitive closure of %uses
+while (1) {
+  my $changedP = 0;
+  for my $x (keys %uses) {
+    for my $y (keys %{$uses{$x}}) {
+      for my $z (keys %{$uses{$y}}) {
+	if (! exists $uses{$x}{$z}) {
+	  $uses{$x}{$z} = 1;
+	  $changedP = 1;
+	}
+      }
+    }
+  }
+  last if !$changedP;
+}
+
+# Print file header
+print
+"## This file automatically generated by $myName.  Do not modify.
+
+#ifdef USE_UNION_TYPE
+LISP_UNION_H=lisp-union.h
+#else
+LISP_UNION_H=lisp-disunion.h
+#endif
+";
+
+my @LISP_H = ('lisp.h', 'config.h', sort keys %{$uses{'lisp.h'}});
+#@LISP_H = grep (! /lisp-(dis)?union\.h/, @LISP_H);
+print "LISP_H = @{[grep (!/lisp-(dis)?union\.h/, @LISP_H)]} \$(LISP_UNION_H)\n";
+
+sub PrintDeps {
+  my $file = shift;
+  my $ofile = $file; $ofile =~ s/c$/o/; print "$ofile: ";
+  if (exists $uses{$file}{'lisp.h'}) {
+    delete @{%{$uses{$file}}}{@LISP_H};
+    $uses{$file}{'$(LISP_H)'} = 1;
+  }
+  print "@{[sort keys %{$uses{$file}}]}\n";
+}
+
+sub PrintPatternDeps {
+  my ($pattern, $CPP_SYMBOL) = @_;
+  print "#ifdef $CPP_SYMBOL\n";
+  for my $file (sort grep (/$pattern/ && /\.c$/, keys %uses)) {
+    PrintDeps($file);
+    delete $uses{$file};
+  }
+  print "#endif\n";
+}
+
+PrintPatternDeps ('-msw',     "HAVE_MS_WINDOWS");
+PrintPatternDeps ('-x',       "HAVE_X_WINDOWS");
+PrintPatternDeps ('database', "HAVE_DATABASE");
+PrintPatternDeps ('^mule',    "MULE");
+PrintPatternDeps ('^(?:External|extw-)', "EXTERNAL_WIDGET");
+
+for my $file (sort grep (/\.c$/, keys %uses)) { PrintDeps($file); }
+
+sub RemoveComments {
+  $_[0] =~
+    s{ (
+	[^\"\'/]+ |
+	(?:\"[^\"\\]*(?:\\.[^\"\\]*)*\" [^\"\'/]*)+ |
+	(?:\'[^\'\\]*(?:\\.[^\'\\]*)*\' [^\"\'/]*)+
+       )
+       | / (?:
+	    \*[^*]*\*+(?:[^/*][^*]*\*+)*/
+	    |
+	    /[^\n]*
+	   )
+     }{defined $1 ? $1 : ""}gsxeo;
+}