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#!/usr/bin/env perl
# a script for use by autoconf to make the Makefiles
# from the Makefile.in's
#
# the original autoconf mechanism first splits all substitutions into groups
# of ca. 90, and than invokes sed for _every_ Makefile.in and every group
# (so around 2-3 times per Makefile.in). So this takes forever, as sed
# has to recompile the regexps every time.
#
# this script does better. It changes all Makefile.ins in one process.
# in tdelibs the time for building Makefile went down from 2:59 min to 13 sec!
#
# written by Michael Matz <[email protected]>
# adapted by Dirk Mueller <[email protected]>
# This file is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
# You should have received a copy of the GNU Library General Public License
# along with this library; see the file COPYING.LIB. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
use strict;
use File::Path;
my $ac_subs=$ARGV[0];
my $ac_sacfiles = $ARGV[1];
my $ac_given_srcdir=$ARGV[2];
my $ac_given_INSTALL=$ARGV[3];
my @comp_match;
my @comp_subs;
#print "ac_subs=$ac_subs\n";
#print "ac_sacfiles=$ac_sacfiles\n";
#print "ac_given_srcdir=$ac_given_srcdir\n";
#print "ac_given_INSTALL=$ac_given_INSTALL\n";
my $configure_input;
my ($srcdir, $top_srcdir);
my $INSTALL;
my $bad_perl = ($] < 5.005);
my $created_file_count = 0;
open(CF, "< $ac_subs") || die "can't open $ac_subs: $!";
my @subs = <CF>;
my $pat;
close(CF);
chomp @subs;
@comp_match=();
@comp_subs=();
if ($bad_perl) {
print "Using perl older than version 5.005\n";
foreach $pat (@subs) {
if ( ($pat =~ m/s%([^%]*)%([^%]*)%g/ )
|| ($pat =~ m/s%([^%]*)%([^%]*)%;t/ )
|| ($pat =~ m/s,([^,]*),(.*),;t/)
|| ($pat =~ m%s/([^/]*)/([^/]*)/g% )
|| ($pat =~ m%s/([^/]*)/([^/]*)/;t% )
) {
# form : s%bla%blubb%g
# or s%bla%blubb%;t t (autoconf > 2.13 and < 2.52 ?)
# or s,bla,blubb,;t t (autoconf 2.52)
my $srch = $1;
my $repl = $2;
$repl =~ s/\\(.)/$1/g;
push @comp_subs, make_closure($srch, $repl);
} elsif ( ($pat =~ /%([^%]*)%d/ )
|| ($pat =~ m%/([^/]*)/d% )
) {
push @comp_subs, make_closure($1, "");
} else {
die "Uhh. Malformed pattern in $ac_subs ($pat)"
unless ( $pat =~ /^\s*$/ ); # ignore white lines
}
}
} else {
foreach $pat (@subs) {
if ( ($pat =~ /s%([^%]*)%([^%]*)%g/ ) ||
($pat =~ /s%([^%]*)%([^%]*)%;t/ ) ||
($pat =~ /s,([^,]*),(.*),;t/) ) {
# form : s%bla%blubb%g
# or s%bla%blubb%;t t (autoconf > 2.13 and < 2.52 ?)
# or s,bla,blubb,;t t (autoconf 2.52)
my $srch = $1;
my $repl = $2;
push @comp_match, eval "qr/\Q$srch\E/"; # compile match pattern
$repl =~ s/\\(.)/$1/g;
push @comp_subs, $repl;
} elsif ( ($pat =~ /%([^%]*)%d/ )
|| ($pat =~ m%/([^/]*)/d% )
) {
push @comp_match, eval "qr/\Q$1\E/";
push @comp_subs, "";
} else {
die "Uhh. Malformed pattern in $ac_subs ($pat)"
unless ( $pat =~ /^\s*$/ ); # ignore white lines
}
}
}
undef @subs;
# read the list of files to be patched, form:
# ./Makefile arts/Makefile arts/examples/Makefile arts/flow/Makefile
open(CF, "< $ac_sacfiles") || die "can't open $ac_sacfiles: $!";
my @ac_files = <CF>;
close(CF);
chomp @ac_files;
my $ac_file;
foreach $ac_file (@ac_files) {
next if $ac_file =~ /\.\./;
next if $ac_file =~ /^\s*$/;
my $ac_file_in;
my ($ac_dir, $ac_dots, $ac_dir_suffix);
if ($ac_file =~ /.*:.*/ ) {
($ac_file_in = $ac_file) =~ s%[^:]*:%%;
$ac_file =~ s%:.*%%;
} else {
$ac_file_in = $ac_file.".in";
}
# Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
# Remove last slash and all that follows it. Not all systems have dirname.
($ac_dir = $ac_file) =~ s%/[^/][^/]*$%%;
if ( ($ac_dir ne $ac_file) && ($ac_dir ne ".")) {
# The file is in a subdirectory.
if (! -d "$ac_dir") { mkpath "$ac_dir", 0, 0777; }
($ac_dir_suffix = $ac_dir) =~ s%^./%%;
$ac_dir_suffix="/".$ac_dir_suffix;
# A "../" for each directory in $ac_dir_suffix.
($ac_dots = $ac_dir_suffix) =~ s%/[^/]*%../%g;
} else {
$ac_dir_suffix="";
$ac_dots="";
}
if ($ac_given_srcdir eq ".") {
$srcdir=".";
if ($ac_dots) {
( $top_srcdir = $ac_dots) =~ s%/$%%;
} else { $top_srcdir="."; }
} elsif ($ac_given_srcdir =~ m%^/%) {
$srcdir=$ac_given_srcdir.$ac_dir_suffix;
$top_srcdir = $ac_given_srcdir;
} else {
$srcdir = $ac_dots.$ac_given_srcdir.$ac_dir_suffix;
$top_srcdir = $ac_dots.$ac_given_srcdir;
}
if ($ac_given_INSTALL) {
if ($ac_given_INSTALL =~ m%^/% ) {
$INSTALL = $ac_given_INSTALL;
} else {
$INSTALL = $ac_dots.$ac_given_INSTALL;
}
}
print "fast creating $ac_file\n";
unlink $ac_file;
my $ac_comsub="";
my $fname=$ac_file_in;
$fname =~ s%.*/%%;
$configure_input="$ac_file. Generated from $fname by config.pl.";
my $ac_file_inputs;
($ac_file_inputs = $ac_file_in) =~ s%^%$ac_given_srcdir/%;
$ac_file_inputs =~ s%:% $ac_given_srcdir/%g;
patch_file($ac_file, $ac_file_inputs);
++$created_file_count;
}
print "config.pl: fast created $created_file_count file(s).\n";
sub patch_file {
my ($outf, $infiles) = @_;
my $filedata;
my @infiles=split(' ', $infiles);
my $i=0;
my $name;
foreach $name (@infiles) {
if (open(CF, "< $name")) {
while (<CF>) {
$filedata .= $_;
}
close(CF);
} else {
print STDERR "can't open $name: $!"."\n";
}
}
$filedata =~ s%\@configure_input\@%$configure_input%g;
$filedata =~ s%\@srcdir\@%$srcdir%g;
$filedata =~ s%\@top_srcdir\@%$top_srcdir%g;
$filedata =~ s%\@INSTALL\@%$INSTALL%g;
if ($bad_perl) {
while ($i <= $#comp_subs) {
my $ref = $comp_subs[$i];
&$ref(\$filedata);
$i++;
}
} else {
while ($i <= $#comp_match) {
$filedata =~ s/$comp_match[$i]/$comp_subs[$i]/g;
$i++;
}
}
open(CF, "> $outf") || die "can't create $outf: $!";
print CF $filedata;
close(CF);
}
sub make_closure {
my ($pat, $sub) = @_;
my $ret = eval "return sub { my \$ref=shift; \$\$ref =~ s%\Q$pat\E%\Q$sub\E%g; }";
if ($@) {
print "can't create CODE: $@\n";
}
return $ret;
}
|
