admin/conf.change.pl

   1 #!/usr/bin/env perl
   2
   3 # this script patches a config.status file, to use our own perl script
   4 # in the main loop
   5 # we do it this way to circumvent hacking (and thereby including)
   6 # autoconf function (which are GPL) into our LGPL acinclude.m4.in
   7 # written by Michael Matz <matz@kde.org>
   8 # adapted by Dirk Mueller <mueller@kde.org>
   9 #
  10 #   This file is free software; you can redistribute it and/or
  11 #   modify it under the terms of the GNU Library General Public
  12 #   License as published by the Free Software Foundation; either
  13 #   version 2 of the License, or (at your option) any later version.
  14
  15 #   This library is distributed in the hope that it will be useful,
  16 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 #   Library General Public License for more details.
  19
  20 #   You should have received a copy of the GNU Library General Public License
  21 #   along with this library; see the file COPYING.LIB.  If not, write to
  22 #   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 #   Boston, MA 02111-1307, USA.
  24
  25 # we have to change two places
  26 # 1. the splitting of the substitutions into chunks of 90 (or even 48 in
  27 #    later autoconf's
  28 # 2. the big main loop which patches all Makefile.in's
  29
  30 use strict;
  31 use File::Basename;
  32
  33 my $ac_aux_dir = dirname($0);
  34 my ($flag);
  35 my $ac_version = 0;
  36 my $vpath_seen = 0;
  37 $flag = 0;
  38
  39 while (<>) {
  40 # usage of $flag: 0 -- we have seen nothing yet
  41 #   1 -- we are in (1)
  42 #   2 -- we have ended (1)
  43 #   3 -- we are in (2)
  44 #   4 -- we ended (2)
  45
  46     if ($flag == 4) {
  47         print;
  48     } elsif ($flag == 0) {
  49 # 1. begins with (including): "ac_max_sed_\S+\s*=\s*[0-9]+..."
  50 #    ends with (excluding) "CONFIG_FILE=..."
  51 #    in later autoconf (2.14.1) there is no CONFIG_FILES= line,
  52 #    but instead the (2) directly follow (1)
  53         if (/^\s*ac_max_sed_([a-z]+).*=\s*([0-9]+)/ ) {
  54             $flag = 1;
  55             if ($1 eq 'lines') {
  56                 # lets hope its different with 2141,
  57                 # wasn't able to verify that
  58               if ($2 eq '48') {
  59                 $ac_version = 250;
  60               }
  61               else {
  62                 $ac_version = 2141;
  63               }
  64             } elsif ($1 eq 'cmds') {
  65                 $ac_version = 213;
  66             }
  67             # hmm, we don't know the autoconf version, but we try anyway
  68         } else {
  69             print;
  70         }
  71     } elsif ($flag == 1) {
  72         if (/^\s*CONFIG_FILES=/ && ($ac_version != 250)) {
  73              print;
  74              $flag = 2;
  75         } elsif (/^\s*for\s+ac_file\s+in\s+.*CONFIG_FILES/ ) {
  76              $flag = 3;
  77         }
  78     } elsif ($flag == 2) {
  79 # 2. begins with: "for ac_file in.*CONFIG_FILES"  (the next 'for' after (1))
  80 #    end with: "rm -f conftest.s\*"
  81 # on autoconf 250, it ends with '# CONFIG_HEADER section'
  82 #
  83 # gg: if a post-processing commands section is found first,
  84 #    stop there and insert a new loop to honour the case/esac.
  85 # (pattern: /^\s+#\sRun the commands associated with the file./)
  86
  87         if (/^\s*for\s+ac_file\s+in\s+.*CONFIG_FILES/ ) {
  88             $flag = 3;
  89         } else {
  90             print;
  91         }
  92     } elsif ($flag == 3) {
  93         if (/^\s*rm\s+-f\s+conftest/ ) {
  94             $flag = 4;
  95             &insert_main_loop();
  96         } elsif (/^\s*rm\s+-f\s+.*ac_cs_root/ ) {
  97             $flag = 4;
  98             &insert_main_loop();
  99             #die "hhhhhhh";
 100             if ($ac_version != 2141) {
 101                 print STDERR "hmm, don't know autoconf version\n";
 102             }
 103         } elsif (/^\#\s*CONFIG_(HEADER|COMMANDS) section.*|^\s+#\s(Run) the commands associated/) {
 104           $flag = 4;
 105           my $commands = defined $2;
 106           &insert_main_loop();
 107           $commands && insert_command_loop();
 108           if($ac_version != 250) {
 109             print STDERR "hmm, something went wrong :-(\n";
 110           }
 111         } elsif (/VPATH/ ) {
 112             $vpath_seen = 1;
 113         }
 114     }
 115 }
 116
 117 die "wrong input (flag != 4)" unless $flag == 4;
 118 print STDERR "hmm, don't know autoconf version\n" unless $ac_version;
 119
 120 sub insert_main_loop {
 121
 122   if ($ac_version == 250) {
 123     &insert_main_loop_250();
 124   }
 125   else {
 126     &insert_main_loop_213();
 127   }
 128 }
 129
 130 sub insert_main_loop_250 {
 131
 132   print <<EOF;
 133   #echo Doing the fast build of Makefiles -- autoconf $ac_version
 134 EOF
 135     if ($vpath_seen) {
 136         print <<EOF;
 137         # VPATH subst was seen in original config.status main loop
 138   echo '/^[     ]*VPATH[        ]*=[^:]*\$/d' >>\$tmp/subs.sed
 139 EOF
 140       }
 141   print <<EOF;
 142   rm -f \$tmp/subs.files
 143   for ac_file in .. \$CONFIG_FILES ; do
 144       if test "x\$ac_file" != x..; then
 145           echo \$ac_file >> \$tmp/subs.files
 146       fi
 147   done
 148   if test -f \$tmp/subs.files ; then
 149       perl $ac_aux_dir/config.pl "\$tmp/subs.sed" "\$tmp/subs.files" "\$srcdir" "\$INSTALL"
 150   fi
 151   rm -f \$tmp/subs.files
 152
 153 fi
 154 EOF
 155   return;
 156 }
 157
 158 sub insert_main_loop_213 {
 159     print <<EOF;
 160 #echo Doing the fast build of Makefiles -- autoconf $ac_version
 161 if test "x\$ac_cs_root" = "x" ; then
 162     ac_cs_root=conftest
 163 fi
 164 EOF
 165     if ($vpath_seen) {
 166       print <<EOF;
 167 # VPATH subst was seen in original config.status main loop
 168 echo '/^[       ]*VPATH[        ]*=[^:]*\$/d' >> \$ac_cs_root.subs
 169 EOF
 170     }
 171     print <<EOF;
 172 rm -f \$ac_cs_root.sacfiles
 173 for ac_file in .. \$CONFIG_FILES ; do
 174     if test "x\$ac_file" != x..; then
 175         echo \$ac_file >> \$ac_cs_root.sacfiles
 176     fi
 177 done
 178 if test -f \$ac_cs_root.sacfiles ; then
 179     perl $ac_aux_dir/config.pl "\$ac_cs_root.subs" "\$ac_cs_root.sacfiles" "\$ac_given_srcdir" "\$ac_given_INSTALL"
 180 fi
 181 rm -f \$ac_cs_root.s*
 182
 183 EOF
 184     return;
 185 }
 186
 187 sub insert_command_loop {
 188     print <<EOF;
 189   for ac_file in .. \$CONFIG_FILES ; do
 190 EOF
 191 }