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428
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1 : #-*- Perl -*-
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2 # Copyright (C) 1998 Free Software Foundation, Inc.
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3
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4 # This file is part of XEmacs.
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5 #
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6 # XEmacs is free software; you can redistribute it and/or modify it
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7 # under the terms of the GNU General Public License as published by the
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8 # Free Software Foundation; either version 2, or (at your option) any
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9 # later version.
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10 #
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11 # XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 # for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with XEmacs; see the file COPYING. If not, write to
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18 # the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 # Boston, MA 02111-1307, USA.
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20
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21 # Author: Martin Buchholz
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22 eval 'exec perl -w -S $0 ${1+"$@"}'
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23 if 0;
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24
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25 use strict;
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26 my ($myName, $srcdir, %exists, %uses, %generated_header);
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27
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28 ($myName = $0) =~ s@.*/@@; my $usage ="
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29 Usage: $myName
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30
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31 Generates Makefile dependencies for the XEmacs src directory.
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32 The dependencies are written to stdout.\n";
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33
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34 die $usage if @ARGV;
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35
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36 ($srcdir = $0) =~ s@[^/]+$@@;
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37 $srcdir = "." if $srcdir eq "";
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38 chdir $srcdir or die "$srcdir: $!";
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39
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40 opendir SRCDIR, "." or die "$srcdir: $!";
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41 for (grep (/\.[ch]$/, readdir (SRCDIR))) { $exists{$_} = 1; }
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42 closedir SRCDIR;
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43
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44 for (qw (config.h sheap-adjust.h paths.h Emacs.ad.h)) {
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45 $generated_header{$_} = 1;
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46 }
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47
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48 for my $file (keys %exists) {
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49 open (FILE, $file) or die "$file: $!";
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50 undef $/; $_ = <FILE>;
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51 RemoveComments ($_);
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52 s/[ \t]+//g;
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53 # Find include dependencies
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54 for (/^\#include([^\n]+)/gm) {
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55 if (m@^\"([A-Za-z0-9_-]+\.h)\"@) {
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56 $uses{$file}{$1} = 1 if exists $exists{$1};
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57 } elsif (m@<([A-Za-z0-9_-]+\.h)>@) {
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58 $uses{$file}{$1} = 1 if exists $generated_header{$1};
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59 } elsif (m@\"../lwlib/([A-Za-z0-9_-]+\.h)\"@) {
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60 $uses{$file}{"\$(LWLIB_SRCDIR)/lwlib.h"} = 1;
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61 }
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62 }
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63 }
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64
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65 # Make transitive closure of %uses
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66 while (1) {
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67 my $changedP = 0;
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68 for my $x (keys %uses) {
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69 for my $y (keys %{$uses{$x}}) {
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70 for my $z (keys %{$uses{$y}}) {
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71 if (! exists $uses{$x}{$z}) {
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72 $uses{$x}{$z} = 1;
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73 $changedP = 1;
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74 }
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75 }
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76 }
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77 }
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78 last if !$changedP;
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79 }
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80
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81 # Print file header
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82 print
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83 "## This file automatically generated by $myName. Do not modify.
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84
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85 #ifdef USE_UNION_TYPE
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86 LISP_UNION_H=lisp-union.h
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87 #else
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88 LISP_UNION_H=lisp-disunion.h
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89 #endif
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90 ";
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91
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92 my @LISP_H = ('lisp.h', 'config.h');
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93 #@LISP_H = grep (! /lisp-(dis)?union\.h/, @LISP_H);
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94 print "LISP_H = @{[grep (!/lisp-(dis)?union\.h/, @LISP_H)]} \$(LISP_UNION_H)\n";
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95
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96 sub PrintDeps {
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97 my $file = shift;
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98 my $ofile = $file; $ofile =~ s/c$/o/; print "$ofile: ";
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99 if (exists $uses{$file}{'lisp.h'}) {
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100 delete @{%{$uses{$file}}}{@LISP_H};
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101 $uses{$file}{'$(LISP_H)'} = 1;
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102 }
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103 print "@{[sort keys %{$uses{$file}}]}\n";
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104 }
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105
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106 sub PrintPatternDeps {
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107 my ($pattern, $CPP_SYMBOL) = @_;
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108 print "#ifdef $CPP_SYMBOL\n";
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109 for my $file (sort grep (/$pattern/ && /\.c$/, keys %uses)) {
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110 PrintDeps($file);
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111 delete $uses{$file};
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112 }
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113 print "#endif\n";
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114 }
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115
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116 PrintPatternDeps ('-msw', "HAVE_MS_WINDOWS");
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117 PrintPatternDeps ('-x', "HAVE_X_WINDOWS");
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118 PrintPatternDeps ('database', "HAVE_DATABASE");
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119 PrintPatternDeps ('^mule', "MULE");
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120 PrintPatternDeps ('^(?:External|extw-)', "EXTERNAL_WIDGET");
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121
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122 for my $file (sort grep (/\.c$/, keys %uses)) { PrintDeps($file); }
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123
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124 sub RemoveComments {
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125 $_[0] =~
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126 s{ (
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127 [^\"\'/]+ |
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128 (?:\"[^\"\\]*(?:\\.[^\"\\]*)*\" [^\"\'/]*)+ |
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129 (?:\'[^\'\\]*(?:\\.[^\'\\]*)*\' [^\"\'/]*)+
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130 )
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131 | / (?:
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132 \*[^*]*\*+(?:[^/*][^*]*\*+)*/
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133 |
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134 /[^\n]*
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135 )
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136 }{defined $1 ? $1 : ""}gsxeo;
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137 }
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