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601 cbradney 1
#!/usr/bin/env perl
3 paul 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
#
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# 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!
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#
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
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#   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,
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#   but WITHOUT ANY WARRANTY; without even the implied warranty of
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#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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#   Library General Public License for more details.
25
 
26
#   You should have received a copy of the GNU Library General Public License
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#   along with this library; see the file COPYING.LIB.  If not, write to
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#   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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#   Boston, MA 02111-1307, USA.
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601 cbradney 31
use strict;
32
 
33
use File::Path;
34
 
3 paul 35
my $ac_subs=$ARGV[0];
36
my $ac_sacfiles = $ARGV[1];
37
my $ac_given_srcdir=$ARGV[2];
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my $ac_given_INSTALL=$ARGV[3];
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601 cbradney 40
my @comp_match;
41
my @comp_subs;
42
 
3 paul 43
#print "ac_subs=$ac_subs\n";
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#print "ac_sacfiles=$ac_sacfiles\n";
45
#print "ac_given_srcdir=$ac_given_srcdir\n";
46
#print "ac_given_INSTALL=$ac_given_INSTALL\n";
47
 
601 cbradney 48
my $configure_input;
3 paul 49
my ($srcdir, $top_srcdir);
50
my $INSTALL;
51
my $bad_perl = ($] < 5.005);
601 cbradney 52
my $created_file_count = 0;
3 paul 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 $pat (@subs) {
601 cbradney 64
        if (  ($pat =~ m/s%([^%]*)%([^%]*)%g/ )
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           || ($pat =~ m/s%([^%]*)%([^%]*)%;t/ )
66
           || ($pat =~ m/s,([^,]*),(.*),;t/)
67
           || ($pat =~ m%s/([^/]*)/([^/]*)/g% )
68
           || ($pat =~ m%s/([^/]*)/([^/]*)/;t% )
3 paul 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 {
601 cbradney 106
          die "Uhh. Malformed pattern in $ac_subs ($pat)"
3 paul 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.
601 cbradney 142
        if (! -d "$ac_dir") { mkpath "$ac_dir", 0, 0777; }
3 paul 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%.*/%%;
601 cbradney 178
    $configure_input="$ac_file.  Generated from $fname by config.pl.";
3 paul 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
 
601 cbradney 184
    patch_file($ac_file, $ac_file_inputs);
185
    ++$created_file_count;
3 paul 186
}
187
 
601 cbradney 188
print "config.pl: fast created $created_file_count file(s).\n";
189
 
3 paul 190
sub patch_file {
601 cbradney 191
    my ($outf, $infiles) = @_;
3 paul 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) = @_;
601 cbradney 231
    my $ret = eval "return sub { my \$ref=shift; \$\$ref =~ s%\Q$pat\E%\Q$sub\E%g; }";
3 paul 232
    if ($@) {
233
        print "can't create CODE: $@\n";
234
    }
235
    return $ret;
236
}