1 files changed, 107 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Binaries/Prerequisites/Numpy.pm b/lib/Lintian/Check/Binaries/Prerequisites/Numpy.pm
new file mode 100644
index 0000000..c1ecfc3
--- /dev/null
+++ b/lib/Lintian/Check/Binaries/Prerequisites/Numpy.pm
@@ -0,0 +1,107 @@
+# binaries/prerequisites/numpy -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 2012 Kees Cook
+# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
+# Copyright (C) 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::Binaries::Prerequisites::Numpy;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+
+use Lintian::Relation;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+const my $NUMPY_REGEX => qr{
+    \Qmodule compiled against ABI version \E (?:0x)?%x
+    \Q but this version of numpy is \E (?:0x)?%x
+}x;
+
+has uses_numpy_c_abi => (is => 'rw', default => 0);
+
+sub visit_installed_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    return
+      if $item->file_type !~ m{^ [^,]* \b ELF \b }x
+      || $item->file_type !~ m{ \b executable | shared [ ] object \b }x;
+
+    # Python extension using Numpy C ABI?
+    if (   $item->name=~ m{^usr/lib/(?:pyshared/)?python2\.\d+/.*(?<!_d)\.so$}
+        || $item->name
+        =~ m{^ usr/lib/python3(?:[.]\d+)? / \S+ [.]cpython- \d+ - \S+ [.]so $}x
+    ){
+        $self->uses_numpy_c_abi(1)
+          if $item->strings =~ / numpy /msx
+          && $item->strings =~ $NUMPY_REGEX;
+    }
+
+    return;
+}
+
+sub installable {
+    my ($self) = @_;
+
+    return
+      if $self->processable->type eq 'udeb';
+
+    my $depends = $self->processable->relation('strong');
+
+    # Check for dependency on python3-numpy-abiN dependency (or strict
+    # versioned dependency on python3-numpy)
+    # We do not allow alternatives as it would mostly likely
+    # defeat the purpose of this relation.  Also, we do not allow
+    # versions for -abi as it is a virtual package.
+    $self->hint('missing-dependency-on-numpy-abi')
+      if $self->uses_numpy_c_abi
+      && !$depends->matches(qr/^python3?-numpy-abi\d+$/,
+        Lintian::Relation::VISIT_OR_CLAUSE_FULL)
+      && (
+        !$depends->matches(
+            qr/^python3-numpy \(>[>=][^\|]+$/,
+            Lintian::Relation::VISIT_OR_CLAUSE_FULL
+        )
+        || !$depends->matches(
+            qr/^python3-numpy \(<[<=][^\|]+$/,
+            Lintian::Relation::VISIT_OR_CLAUSE_FULL
+        )
+      )
+      && $self->processable->name !~ m{\A python3?-numpy \Z}xsm;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et