admin/config.pl

   1 #!/usr/bin/env perl
   2 # a script for use by autoconf to make the Makefiles
   3 # from the Makefile.in's
   4 #
   5 # the original autoconf mechanism first splits all substitutions into groups
   6 # of ca. 90, and than invokes sed for _every_ Makefile.in and every group
   7 # (so around 2-3 times per Makefile.in). So this takes forever, as sed
   8 # has to recompile the regexps every time.
   9 #
  10 # this script does better. It changes all Makefile.ins in one process.
  11 # in kdelibs the time for building Makefile went down from 2:59 min to 13 sec!
  12 #
  13 # written by Michael Matz <matz@kde.org>
  14 # adapted by Dirk Mueller <mueller@kde.org>
  15
  16 #   This file is free software; you can redistribute it and/or
  17 #   modify it under the terms of the GNU Library General Public
  18 #   License as published by the Free Software Foundation; either
  19 #   version 2 of the License, or (at your option) any later version.
  20
  21 #   This library is distributed in the hope that it will be useful,
  22 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  23 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24 #   Library General Public License for more details.
  25
  26 #   You should have received a copy of the GNU Library General Public License
  27 #   along with this library; see the file COPYING.LIB.  If not, write to
  28 #   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  29 #   Boston, MA 02111-1307, USA.
  30
  31 use strict;
  32
  33 use File::Path;
  34
  35 my $ac_subs=$ARGV[0];
  36 my $ac_sacfiles = $ARGV[1];
  37 my $ac_given_srcdir=$ARGV[2];
  38 my $ac_given_INSTALL=$ARGV[3];
  39
  40 my @comp_match;
  41 my @comp_subs;
  42
  43 #print "ac_subs=$ac_subs\n";
  44 #print "ac_sacfiles=$ac_sacfiles\n";
  45 #print "ac_given_srcdir=$ac_given_srcdir\n";
  46 #print "ac_given_INSTALL=$ac_given_INSTALL\n";
  47
  48 my $configure_input;
  49 my ($srcdir, $top_srcdir);
  50 my $INSTALL;
  51 my $bad_perl = ($] < 5.005);
  52 my $created_file_count = 0;
  53
  54 open(CF, "< $ac_subs") || die "can't open $ac_subs: $!";
  55 my @subs = <CF>;
  56 close(CF);
  57 chomp @subs;
  58 @comp_match=();
  59 @comp_subs=();
  60
  61 if ($bad_perl) {
  62     print "Using perl older than version 5.005\n";
  63     foreach my $pat (@subs) {
  64         if (  ($pat =~ m/s%([^%]*)%([^%]*)%g/ )
  65            || ($pat =~ m/s%([^%]*)%([^%]*)%;t/ )
  66            || ($pat =~ m/s,([^,]*),(.*),;t/)
  67            || ($pat =~ m%s/([^/]*)/([^/]*)/g% )
  68            || ($pat =~ m%s/([^/]*)/([^/]*)/;t% )
  69            ) {
  70             # form : s%bla%blubb%g
  71             # or     s%bla%blubb%;t t   (autoconf > 2.13 and < 2.52 ?)
  72             # or     s,bla,blubb,;t t   (autoconf 2.52)
  73             my $srch = $1;
  74             my $repl = $2;
  75             $repl =~ s/\\(.)/$1/g;
  76             push @comp_subs, make_closure($srch, $repl);
  77
  78         } elsif ( ($pat =~ /%([^%]*)%d/ )
  79            || ($pat =~ m%/([^/]*)/d% )
  80            ) {
  81             push @comp_subs, make_closure($1, "");
  82         } else {
  83             die "Uhh. Malformed pattern in $ac_subs ($pat)"
  84                 unless ( $pat =~ /^\s*$/ );   # ignore white lines
  85         }
  86     }
  87 } else {
  88     foreach my $pat (@subs) {
  89        if ( ($pat =~ /s%([^%]*)%([^%]*)%g/ ) ||
  90             ($pat =~ /s%([^%]*)%([^%]*)%;t/ ) ||
  91             ($pat =~ /s,([^,]*),(.*),;t/) ) {
  92          # form : s%bla%blubb%g
  93          # or     s%bla%blubb%;t t   (autoconf > 2.13 and < 2.52 ?)
  94          # or     s,bla,blubb,;t t   (autoconf 2.52)
  95          my $srch = $1;
  96          my $repl = $2;
  97          push @comp_match, eval "qr/\Q$srch\E/";  # compile match pattern
  98          $repl =~ s/\\(.)/$1/g;
  99          push @comp_subs, $repl;
 100       } elsif ( ($pat =~ /%([^%]*)%d/ )
 101                 || ($pat =~ m%/([^/]*)/d% )
 102               ) {
 103         push @comp_match, eval "qr/\Q$1\E/";
 104         push @comp_subs, "";
 105       } else {
 106           die "Uhh. Malformed pattern in $ac_subs ($pat)"
 107           unless ( $pat =~ /^\s*$/ );   # ignore white lines
 108       }
 109     }
 110 }
 111 undef @subs;
 112
 113 # read the list of files to be patched, form:
 114 # ./Makefile arts/Makefile arts/examples/Makefile arts/flow/Makefile
 115
 116 open(CF, "< $ac_sacfiles") || die "can't open $ac_sacfiles: $!";
 117 my @ac_files = <CF>;
 118 close(CF);
 119 chomp @ac_files;
 120
 121
 122 my $ac_file;
 123 foreach $ac_file (@ac_files) {
 124     next if $ac_file =~ /\.\./;
 125     next if $ac_file =~ /^\s*$/;
 126     my $ac_file_in;
 127     my ($ac_dir, $ac_dots, $ac_dir_suffix);
 128
 129     if ($ac_file =~ /.*:.*/ ) {
 130         ($ac_file_in = $ac_file) =~ s%[^:]*:%%;
 131         $ac_file =~ s%:.*%%;
 132     } else {
 133         $ac_file_in = $ac_file.".in";
 134     }
 135
 136 # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
 137
 138 # Remove last slash and all that follows it.  Not all systems have dirname.
 139     ($ac_dir = $ac_file) =~ s%/[^/][^/]*$%%;
 140     if ( ($ac_dir ne $ac_file) && ($ac_dir ne ".")) {
 141 # The file is in a subdirectory.
 142         if (! -d "$ac_dir") { mkpath "$ac_dir", 0, 0777; }
 143         ($ac_dir_suffix = $ac_dir) =~ s%^./%%;
 144         $ac_dir_suffix="/".$ac_dir_suffix;
 145 # A "../" for each directory in $ac_dir_suffix.
 146         ($ac_dots = $ac_dir_suffix) =~ s%/[^/]*%../%g;
 147     } else {
 148         $ac_dir_suffix="";
 149         $ac_dots="";
 150     }
 151
 152     if ($ac_given_srcdir eq ".") {
 153         $srcdir=".";
 154         if ($ac_dots) {
 155             ( $top_srcdir = $ac_dots) =~ s%/$%%;
 156         } else { $top_srcdir="."; }
 157     } elsif ($ac_given_srcdir =~ m%^/%) {
 158         $srcdir=$ac_given_srcdir.$ac_dir_suffix;
 159         $top_srcdir = $ac_given_srcdir;
 160     } else {
 161         $srcdir = $ac_dots.$ac_given_srcdir.$ac_dir_suffix;
 162         $top_srcdir = $ac_dots.$ac_given_srcdir;
 163     }
 164
 165     if ($ac_given_INSTALL) {
 166         if ($ac_given_INSTALL =~ m%^/% ) {
 167             $INSTALL = $ac_given_INSTALL;
 168         } else {
 169             $INSTALL = $ac_dots.$ac_given_INSTALL;
 170         }
 171     }
 172
 173     print "fast creating $ac_file\n";
 174     unlink $ac_file;
 175     my $ac_comsub="";
 176     my $fname=$ac_file_in;
 177     $fname =~ s%.*/%%;
 178     $configure_input="$ac_file.  Generated from $fname by config.pl.";
 179
 180     my $ac_file_inputs;
 181     ($ac_file_inputs = $ac_file_in) =~ s%^%$ac_given_srcdir/%;
 182     $ac_file_inputs =~ s%:% $ac_given_srcdir/%g;
 183
 184     patch_file($ac_file, $ac_file_inputs);
 185     ++$created_file_count;
 186 }
 187
 188 print "config.pl: fast created $created_file_count file(s).\n";
 189
 190 sub patch_file {
 191     my ($outf, $infiles) = @_;
 192     my $filedata;
 193     my @infiles=split(' ', $infiles);
 194     my $i=0;
 195
 196     foreach my $name (@infiles) {
 197         if (open(CF, "< $name")) {
 198             while (<CF>) {
 199                 $filedata .= $_;
 200             }
 201             close(CF);
 202         } else {
 203             print STDERR "can't open $name: $!"."\n";
 204         }
 205     }
 206
 207     $filedata =~ s%\@configure_input\@%$configure_input%g;
 208     $filedata =~ s%\@srcdir\@%$srcdir%g;
 209     $filedata =~ s%\@top_srcdir\@%$top_srcdir%g;
 210     $filedata =~ s%\@INSTALL\@%$INSTALL%g;
 211
 212     if ($bad_perl) {
 213         while ($i <= $#comp_subs) {
 214             my $ref = $comp_subs[$i];
 215             &$ref(\$filedata);
 216             $i++;
 217         }
 218     } else {
 219         while ($i <= $#comp_match) {
 220             $filedata =~ s/$comp_match[$i]/$comp_subs[$i]/g;
 221             $i++;
 222         }
 223     }
 224     open(CF, "> $outf") || die "can't create $outf: $!";
 225     print CF $filedata;
 226     close(CF);
 227 }
 228
 229 sub make_closure {
 230     my ($pat, $sub) = @_;
 231     my $ret = eval "return sub { my \$ref=shift; \$\$ref =~ s%\Q$pat\E%\Q$sub\E%g; }";
 232     if ($@) {
 233         print "can't create CODE: $@\n";
 234     }
 235     return $ret;
 236 }