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1 : #-*- Perl -*-
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2
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3 ### make-src-depend --- update the Makefile dependency information for XEmacs
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4
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5 # Copyright (C) 1998 Free Software Foundation, Inc.
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6
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7 ## Author: Martin Buchholz <martin@xemacs.org>
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8 ## Maintainer: XEmacs Development Team
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9
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10 ## This file is part of XEmacs.
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11
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12 ## XEmacs is free software; you can redistribute it and/or modify it
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13 ## under the terms of the GNU General Public License as published by
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14 ## the Free Software Foundation; either version 2, or (at your option)
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15 ## any later version.
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16
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17 ## XEmacs is distributed in the hope that it will be useful, but
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18 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ## General Public License for more details.
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21
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22 ## You should have received a copy of the GNU General Public License
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23 ## along with XEmacs; see the file COPYING. If not, write to the Free
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24 ## Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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25 ## 02111-1307, USA.
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26
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428
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27 eval 'exec perl -w -S $0 ${1+"$@"}'
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28 if 0;
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29
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30 use strict;
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31 my ($myName, $srcdir, %exists, %uses, %generated_header);
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32
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33 ($myName = $0) =~ s@.*/@@; my $usage ="
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34 Usage: $myName
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35
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36 Generates Makefile dependencies for the XEmacs src directory.
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37 The dependencies are written to stdout.
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38 ";
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39
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40 die $usage if @ARGV;
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41
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42 ($srcdir = $0) =~ s@[^/]+$@@;
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43 $srcdir = "." if $srcdir eq "";
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44 chdir $srcdir or die "$srcdir: $!";
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45
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46 opendir SRCDIR, "." or die "$srcdir: $!";
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47 for (grep (/\.[ch]$/, readdir (SRCDIR))) { $exists{$_} = 1; }
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48 closedir SRCDIR;
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49
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50 for (qw (config.h sheap-adjust.h paths.h Emacs.ad.h)) {
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51 $generated_header{$_} = 1;
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52 }
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53
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54 # Although this is not technically true, it ought to be true,
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55 # and makes the generated Makefile smaller.
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56 $uses{'lisp.h'}{'config.h'} = 1;
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57
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58 for my $file (keys %exists) {
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59 open (FILE, $file) or die "$file: $!";
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60 undef $/; $_ = <FILE>;
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61 RemoveComments ($_);
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62 s/[ \t]+//g;
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63 # Find include dependencies
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64 for (/^\#include([^\n]+)/gm) {
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65 if (m@^\"([A-Za-z0-9._-]+\.[ch])\"@) {
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66 $uses{$file}{$1} = 1 if exists $exists{$1};
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67 } elsif (m@<([A-Za-z0-9._-]+\.h)>@) {
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68 $uses{$file}{$1} = 1 if exists $generated_header{$1};
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69 } elsif (m@\"../lwlib/([A-Za-z0-9._-]+\.h)\"@) {
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70 $uses{$file}{"\$(LWLIB_SRCDIR)/lwlib.h"} = 1;
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71 }
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72 }
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73 }
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74
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75 # Make transitive closure of %uses
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76 while (1) {
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77 my $changedP = 0;
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78 for my $x (keys %uses) {
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79 for my $y (keys %{$uses{$x}}) {
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80 for my $z (keys %{$uses{$y}}) {
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81 if (! exists $uses{$x}{$z}) {
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82 $uses{$x}{$z} = 1;
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83 $changedP = 1;
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84 }
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85 }
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86 }
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87 }
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88 last if !$changedP;
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89 }
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90
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91 # Print file header
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92 print
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93 "## This file is automatically generated by \`$myName'. Do not modify.
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94
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95 #if defined(USE_UNION_TYPE)
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96 LISP_UNION_H=lisp-union.h
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97 #else
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98 LISP_UNION_H=lisp-disunion.h
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99 #endif
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100 ";
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101
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102 my @LISP_H = ('lisp.h', sort keys %{$uses{'lisp.h'}});
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103 print "
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104 #if defined(QUICK_BUILD)
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105 CONFIG_H=
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106 LISP_H=
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107 #else
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108 CONFIG_H=config.h
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109 LISP_H=@{[grep (!/lisp-(dis)?union\.h/, @LISP_H)]} \$(LISP_UNION_H)
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110 #endif
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111
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112 ";
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113
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114 sub PrintDeps {
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115 my $file = shift;
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116 my $ofile = $file; $ofile =~ s/c$/o/; print "$ofile: ";
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117 if (exists $uses{$file}{'lisp.h'}) {
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118 delete @{%{$uses{$file}}}{@LISP_H};
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119 $uses{$file}{'$(LISP_H)'} = 1;
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120 }
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121 # Note: If both config.h and lisp.h are dependencies, config.h got deleted
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122 # by the last clause.
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123 if (exists $uses{$file}{'config.h'}) {
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124 delete $uses{$file}{'config.h'};
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125 $uses{$file}{'$(CONFIG_H)'} = 1;
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126 }
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127 print "@{[sort keys %{$uses{$file}}]}\n";
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128 }
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129
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130 sub PrintPatternDeps {
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131 my ($pattern, $CPP_SYMBOL) = @_;
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132 print "#if defined($CPP_SYMBOL)\n";
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133 for my $file (sort grep (/$pattern/ && /\.c$/, keys %uses)) {
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134 PrintDeps($file);
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135 delete $uses{$file};
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136 }
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137 print "#endif\n";
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138 }
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139
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140 PrintPatternDeps ('-msw\\.', "HAVE_MS_WINDOWS");
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141 PrintPatternDeps ('-xlike', "HAVE_XLIKE");
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142 # X-specific files: *-x.c *-x-impl.h xgccache.c balloon_help.c x*.h Emacs*.[ch]
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143 PrintPatternDeps ('-x\\.|xgccache|balloon_help|^Emacs', "HAVE_X_WINDOWS");
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144 PrintPatternDeps ('-tty\\.', "HAVE_TTY");
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145 # GTK-specific files: *-gtk.[ch] *-gtk-*.[ch] gtk-*.[ch] emacs-marshals.c emacs-widget-accessors.c glade.c ui-byhand.c
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146 PrintPatternDeps ('gtk|emacs-marshals|emacs-widget-accessors|glade|ui-byhand', "HAVE_GTK");
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147 PrintPatternDeps ('^database', "HAVE_DATABASE");
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148 PrintPatternDeps ('^mule', "MULE");
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149 PrintPatternDeps ('^(?:External|extw-)', "EXTERNAL_WIDGET");
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150
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151 for my $file (sort grep (/\.c$/, keys %uses)) { PrintDeps($file); }
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152
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153 # Surprisingly robust regexp to remove comments from arbitrary C code
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154 sub RemoveComments {
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155 $_[0] =~
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156 s{ (
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157 [^\"\'/]+ |
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158 (?:\"[^\"\\]*(?:\\.[^\"\\]*)*\" [^\"\'/]*)+ |
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159 (?:\'[^\'\\]*(?:\\.[^\'\\]*)*\' [^\"\'/]*)+
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160 )
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161 | / (?:
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162 \*[^*]*\*+(?:[^/*][^*]*\*+)*/
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163 |
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164 /[^\n]*
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165 )
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166 }{defined $1 ? $1 : ""}gsxeo;
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167 }
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