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2651
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1 #!/usr/bin/perl -w
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2 #
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3 # Try the new and old versions of configure with various command lines to see
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4 # if they produce identical output.
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5 #
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6 # Invocation: $0 /path/to/old/configure /path/to/new/configure
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7 #
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8 # Since not all tests use --srcdir, invoke this script from a directory where
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9 # configure can automatically find its input files (Makefile.in.in, etc). If
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10 # interrupted, it probably will leave its temporary directories behind. In
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11 # that case, it will error on next invocation, but remove the directories.
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12 # The next invocation will then succeed.
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13 #
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14
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15 use strict;
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16 use File::Basename;
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17
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18 # Files generated by configure. There should be no functional difference
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19 # between these files generated by 2.13 and those generated by 2.59.
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20 my @output_files =
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21 (
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22 "Installation",
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23 "Makefile.in",
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24 "./Makefile",
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25 "./GNUmakefile",
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26 "dynodump/Makefile.in",
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27 "dynodump/Makefile",
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28 "lib-src/Makefile.in",
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29 "lib-src/Makefile",
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30 "lib-src/GNUmakefile",
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31 # "lib-src/config.values", # This is specific to the version of autoconf.
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32 "lib-src/ellcc.h",
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33 "lwlib/Makefile.in",
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34 "lwlib/Makefile",
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35 "lwlib/GNUmakefile",
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36 "lwlib/config.h",
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37 "modules/ldap/Makefile.in",
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38 "modules/ldap/Makefile",
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39 "modules/ldap/GNUmakefile",
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40 "modules/postgresql/Makefile.in",
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41 "modules/postgresql/Makefile",
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42 "modules/postgresql/GNUmakefile",
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43 "netinstall/Makefile.in",
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44 "netinstall/Makefile",
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45 "src/Makefile.in",
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46 "src/Makefile",
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47 "src/GNUmakefile",
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48 "src/config.h",
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49 "src/paths.h",
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50 "src/xemacs.def.in",
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51 "src/xemacs.def",
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52 );
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53
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54 # The list of complete command line arguments to test against. Since the
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55 # command line arguments have changed between 2.13 and 2.59 this hash maps from
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56 # old => new. If new is 'undef' then the old arguments are used instead.
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57 my %config_args =
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58 (
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59 " " => undef,
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60 "--prefix=/tmp/foo" => undef,
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61 "--with-gnome" => undef,
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62 "--with-mule" => "--enable-mule",
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63 # My build flags for MacOS X. Needs /sw (fink) to be present.
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64 # "--prefix=/Users/malcolmp/prefix --site-prefixes=/sw --with-sound=none --with-database=no --without-ldap --without-postgresql" =>
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65 # "--prefix=/Users/malcolmp/prefix --with-site-prefixes=/sw --disable-sound --disable-database --without-ldap --without-postgresql",
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66 # My build flags for Linux (powerpc64)
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67 "--prefix=/usr/local/gcc3-world --package-path=/usr/local/lib/xemacs" =>
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68 "--prefix=/usr/local/gcc3-world --with-package-path=/usr/local/lib/xemacs",
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69 "--use_union_type" => "--enable-union-type",
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70 "--use_kkcc" => "--enable-kkcc",
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71 "--xemacs-compiler=g++" => "--with-xemacs-compiler=g++",
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72 "--lispdir=/tmp/foo" => "--with-lispdir=/tmp/foo",
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73 "--moduledir=/tmp/foo" => "--with-moduledir=/tmp/foo",
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74 "--etcdir=/tmp/foo" => "--with-etcdir=/tmp/foo",
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75 "--infopath=/tmp/foo" => "--with-infopath=/tmp/foo",
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76 "--archlibdir=/tmp/foo" => "--with-archlibdir=/tmp/foo",
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77 "--docdir=/tmp/foo" => "--with-docdir=/tmp/foo",
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78 "--package-prefix=/tmp/foo" => "--with-package-prefix=/tmp/foo",
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79 "--package-path=/tmp/foo" => "--with-package-path=/tmp/foo",
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80 "--datadir=/tmp/foo" => undef,
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81 "--mandir=/tmp/foo" => undef,
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82 "--infodir=/tmp/foo" => undef,
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83 "--libdir=/tmp/foo" => undef,
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84 "--exec-prefix=/tmp/foo" => undef,
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85 "--with-athena=3d" => undef,
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3094
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86 "--with-mule --with-xft=emacs --debug --error-checking=all --with-xim=xlib --with-widgets=athena --with-athena=3d --with-dialogs=athena --memory-usage-stats --use-number-lib=gmp --site-prefixes=/opt/local:/sw --with-ldap=no --use-union-type" => "--enable-mule --with-xft=emacs --enable-debug --enable-error-checking=all --with-xim=xlib --enable-widgets=athena --with-athena=3d --enable-dialogs=athena --enable-memory-usage-stats --enable-bignum=gmp --with-site-prefixes=/opt/local:/sw --with-ldap=no --enable-union-type"
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2651
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87 );
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88
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89 die "Usage: $0 /path/to/configure-2.13 /path/to/configure-2.59\n" if scalar(@ARGV) != 2;
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90
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91 my $old_configure = $ARGV[0];
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92 my $new_configure = $ARGV[1];
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93 my $old_dir = dirname($old_configure);
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94 my $new_dir = dirname($new_configure);
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95
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96 foreach my $old_arg (keys %config_args) {
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97 mkdir "/tmp/old" or die "$0: Cannot create /tmp/old: $!\n";
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98 mkdir "/tmp/new" or die "$0: Cannot create /tmp/new: $!\n";
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99
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100 my $new_arg = $config_args{$old_arg};
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101 $new_arg = $old_arg if ! defined($new_arg);
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102
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103 print "--------------------------------------------------\n";
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104 print "$old_configure $old_arg\n";
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105 print "$new_configure $new_arg\n";
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106
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107 chdir "/tmp/old" or die "$0: Cannot cd to /tmp/old: $!\n";
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108 system ("$old_configure $old_arg >/tmp/old-output.txt\n") == 0 or
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109 die "$0: $old_configure $old_arg failed\n";
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110
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111 chdir "/tmp/new" or die "$0: Cannot cd to /tmp/new: $!\n";
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112 system ("$new_configure $new_arg >/tmp/new-output.txt\n") == 0 or
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113 die "$0: $new_configure $new_arg failed\n";
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114
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115 foreach my $file (@output_files) {
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116 if (-r "/tmp/old/$file" && -r "/tmp/new/$file") {
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117 # Strip out parts that always differ: Paths and the 'Generated by configure'
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118 # lines.
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119 system("for i in /tmp/old/$file /tmp/new/$file ; do sed -e '/HAVE_DECL_SYS_SIGLIST/d' -e '\\!$old_configure!d' -e '\\!$new_configure!d' -e '/EMACS_CONFIG_OPTIONS/d' -e '/Generated.*configure/d' -e '\\!$old_dir!s///' -e '\\!$new_dir!s///' -e '\\!/tmp/new!s///' -e '\\!/tmp/old!s///' <\$i >\$i.processed ; done");
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120 # Compare the processed versions. These should be the same.
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121 system "diff -U 0 -L old-$file -L new-$file /tmp/old/$file.processed /tmp/new/$file.processed";
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122 }
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123 }
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124 chdir "/";
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125 system("rm -rf /tmp/old /tmp/new");
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126 }
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127
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128 END {
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129 chdir "/";
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130 system("rm -rf /tmp/old /tmp/new");
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131 }
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