1 files changed, 99 insertions, 0 deletions
diff --git a/lib/Lintian/Check/BuildSystems/Autotools/Libtool.pm b/lib/Lintian/Check/BuildSystems/Autotools/Libtool.pm
new file mode 100644
index 0000000..3f0865a
--- /dev/null
+++ b/lib/Lintian/Check/BuildSystems/Autotools/Libtool.pm
@@ -0,0 +1,99 @@
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 1999 Joey Hess
+# Copyright (C) 2000 Sean 'Shaleh' Perry
+# Copyright (C) 2002 Josip Rodin
+# Copyright (C) 2007 Russ Allbery
+# Copyright (C) 2013-2018 Bastien ROUCARIES
+# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
+# Copyright (C) 2020-2021 Felix Lechner
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, you can find it on the World Wide
+# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+package Lintian::Check::BuildSystems::Autotools::Libtool;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+const my $ACCEPTABLE_LIBTOOL_MAJOR => 5;
+const my $ACCEPTABLE_LIBTOOL_MINOR => 2;
+const my $ACCEPTABLE_LIBTOOL_DEBIAN => 2;
+
+# Check if the package build-depends on autotools-dev, automake,
+# or libtool.
+my $LIBTOOL = Lintian::Relation->new->load('libtool | dh-autoreconf');
+has libtool_in_build_depends => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        return $self->processable->relation('Build-Depends-All')
+          ->satisfies($LIBTOOL);
+    }
+);
+
+sub visit_patched_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    $self->pointed_hint('ancient-libtool', $item->pointer)
+      if $item->basename eq 'ltconfig'
+      && $item->name !~ m{^ debian/ }sx
+      && !$self->libtool_in_build_depends;
+
+    if (   $item->basename eq 'ltmain.sh'
+        && $item->name !~ m{^ debian/ }sx
+        && !$self->libtool_in_build_depends) {
+
+        if ($item->bytes =~ /^VERSION=[\"\']?(1\.(\d)\.(\d+)(?:-(\d))?)/m) {
+            my ($version, $major, $minor, $debian)=($1, $2, $3, $4);
+
+            $debian //= 0;
+
+            $self->pointed_hint('ancient-libtool', $item->pointer, $version)
+              if $major < $ACCEPTABLE_LIBTOOL_MAJOR
+              || (
+                $major == $ACCEPTABLE_LIBTOOL_MAJOR
+                && (
+                    $minor < $ACCEPTABLE_LIBTOOL_MINOR
+                    || (   $minor == $ACCEPTABLE_LIBTOOL_MINOR
+                        && $debian < $ACCEPTABLE_LIBTOOL_DEBIAN)
+                )
+              );
+        }
+    }
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et