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#!/usr/bin/perl -w
=head1 NAME
dh_autoreconf - Call autoreconf -f -i and keep track of the changed files.
=cut
use strict;
use Debian::Debhelper::Dh_Lib;
use Cwd;
=head1 SYNOPSIS
B<dh_autoreconf> [S<I<debhelper options>>] [B<-X>I<item>] [B<--mode=>I<mode>]
[S<I<program> B<--> I<params>>]
=head1 DESCRIPTION
dh_autoreconf is responsible for calling autoreconf and creating the files
debian/autoreconf.before and debian/autoreconf.after which contain checksums
of all files before/after the build. It is complemented by dh_autoreconf_clean
which creates a list of all changed and added files and removes them.
Please note that dh_autoreconf can only be run once. Thus, if you need to
run multiple commands, use a script or similar. An example is given in
L<dh-autoreconf(7)>.
=head1 FILES
=over 4
=item debian/autoreconf
This file can contain a list of directories. If present, dh_autoreconf will
only scan the given directories for changes. If no special command is given
to dh_autoreconf, it will also forward the directory list to autoreconf
which causes it to be run only on those sub directories.
=back
=head1 OPTIONS
=over 4
=item B<-X>I<item> B<--exclude=>I<item>
Exclude files that contain "item" anywhere in their filename from being
checked for changes. This means that those files won't be deleted by
C<dh_autoreconf_clean> even if there are changes. You may use this option
multiple times to build up a list of things to exclude.
Starting with version 3, the directories of common version control systems
such as cvs, git, hg, svn, and bzr are excluded automatically.
=item B<--mode=>I<mode>
Change the way in which modifications to files are detected. The default mode
is I<md5> for using MD5 checksums, but there is also I<timesize> for using
the time of the last modification and the file size.
=item B<--as-needed>
Enable support for -Wl,--as-needed in all ltmain.sh files identical to
the one of the libtool package. This only works in the MD5 mode (the
default one). The changes are reverted in dh_autoreconf_clean. You should
not prevent LIBTOOLIZE from running with this, as it only works correctly
with libtoolize running.
=item B<-D>I<dir> B<--sourcedirectory>=I<dir>
Run everything in the source directory. Supported only in debhelper compat
level 10 for backwards compatibility.
=item I<program> B<--> I<params>
Run the program given by I<program> with the arguments given by I<params>
instead of autoreconf -f -i. If you need to run multiple commands, put them in
a script and pass the script instead (or add a target to debian/rules).
=back
=head1 ENVIRONMENT
For each tool executed by L<autoreconf(1)>, one can export a variable with
the uppercase name of the tool to the specific program which shall be run,
including B<true> to prevent the tool in question from being run. The following
example shows the beginning of a debian/rules for a package where automake
1.11 shall be run instead of the default automake version and libtoolize
shall not be run:
#!/usr/bin/make -f
export AUTOMAKE = automake-1.11
export LIBTOOLIZE = true
=cut
my $opt_sourcedir;
init(options => { "mode=s" => \$dh{MODE},
"D=s" => \$opt_sourcedir,
"sourcedirectory=s" => \$opt_sourcedir,
"as-needed" => \$dh{AS_NEEDED}});
my $exception;
my @directories;
my $find_options='! -ipath "./debian/*" -a ';
my @exclude_default = ("'*/.git/*'", "'*/.hg/*'", "'*/.bzr/*'", "'*/.svn/*'",
"'*/CVS/*'");
$find_options .= ("! \\( -path " . join(" -o -path ", @exclude_default) .
" \\) -a ");
if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
$find_options .= "! \\( $dh{EXCLUDE_FIND} \\) -a ";
}
# Find ltmain.sh
my $LTMAIN = "/usr/share/libtool/build-aux/ltmain.sh";
$LTMAIN = "/usr/share/libtool/config/ltmain.sh" if (! -e "$LTMAIN");
if ($dh{AS_NEEDED}) {
$find_options = "$LTMAIN . " . $find_options;
}
if (-e "debian/autoreconf") {
@directories=filearray("debian/autoreconf", ".");
$find_options = join(" ",@directories)." ".$find_options;
} elsif (not @ARGV) {
# No debian/autoreconf and no arguments - perhaps there is nothing
# to do.
my $dir = '.';
$dir = $opt_sourcedir if defined($opt_sourcedir);
if (not -f "${dir}/configure.ac" and not -f "${dir}/configure.in") {
# Nothing to do, exit early.
exit(0);
}
}
if (-e "debian/autoreconf.before" || -e "debian/autoreconf.after") {
warning("Only runs once, see dh-autoreconf(7)");
exit(0);
}
my %modes = (
'md5' => "find $find_options -type f -exec md5sum {} + -o -type l -printf \"symlink %p\n\"",
'timesize' => "find $find_options -type f -printf \"%s|%T@ %p\n\" -o -type l -printf \"symlink %p\n\""
);
my $find = $modes{$dh{MODE} || "md5"} ||
error("Unknown value $dh{MODE} passed to --mode");
complex_doit("$find > debian/autoreconf.before");
eval {
# Run autoreconf to recreate the needed files.
my $pwd = getcwd();
chdir $opt_sourcedir if (defined($opt_sourcedir) && !compat(9));
@ARGV ? doit(@ARGV, @{$dh{U_PARAMS}}) : doit('autoreconf', '-f', '-i', @directories);
chdir $pwd;
1;
} or do {
$exception = $@;
};
complex_doit("$find > debian/autoreconf.after");
# Let's fail here if autoreconf failed.
die $exception if (defined $exception);
# Fix ltmain.sh to support -Wl,--as-needed
if ($dh{AS_NEEDED}) {
open(FILE, 'debian/autoreconf.after') or die($!);
my $ltcheck = "";
while(<FILE>) {
chomp($_);
my ($checksum, $filename) = split;
if ($filename eq "$LTMAIN") {
$ltcheck = $checksum;
} elsif ($filename =~ m/\/ltmain.sh$/ and $checksum eq $ltcheck) {
doit("patch", "-f", "--no-backup-if-mismatch", "-i",
"/usr/share/dh-autoreconf/ltmain-as-needed.diff",
$filename);
}
}
close(FILE);
}
=head1 SEE ALSO
L<debhelper(7)>, L<dh_autoreconf_clean(1)>, L<dh-autoreconf(7)>
=head1 AUTHOR
Julian Andres Klode <jak@debian.org>
=cut
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