Lintian::Relation::Version - Comparison operators on Debian versions

Originally written by Russ Allbery <rra@debian.org> for Lintian and adapted to use libapt-pkg-perl by Adam D. Barratt <adam@adam-barratt-org.uk>.

This module provides five functions for comparing version numbers. The underlying implementation uses "libapt-pkg-perl" to ensure that the results match what dpkg will expect.

versions_equal(A, B) Returns true if A is equal to B ("=") and false otherwise. versions_lte(A, B) Returns true if A is less than or equal ("<=") to B and false otherwise. versions_gte(A, B) Returns true if A is greater than or equal (">=") to B and false otherwise. versions_lt(A, B) Returns true if A is less than ("<<") B and false otherwise. versions_gt(A, B) Returns true if A is greater than (">>") B and false otherwise. versions_compare(A, OP, B) Returns true if A OP B, where OP is one of "=", "<=", ">=", "<<", or ">>", and false otherwise. versions_comparator (A, B) Returns -1, 0 or 1 if the version A is (respectively) less than, equal to or greater than B. This is useful for (e.g.) sorting a list of versions: foreach my $version (sort versions_comparator @versions) { ... }

Lintian::Relation::Version - Comparison operators on Debian versions

lintian(1) Lintian v2.122.0ubuntu1 2025-05-01 Lintian::Relation::Version(3)

print encode_utf8("yes\n") if versions_equal('1.0', '1.00'); print encode_utf8("yes\n") if versions_gte('1.1', '1.0'); print encode_utf8("no\n") if versions_lte('1.1', '1.0'); print encode_utf8("yes\n") if versions_gt('1.1', '1.0'); print encode_utf8("no\n") if versions_lt('1.1', '1.1'); print encode_utf8("yes\n") if versions_compare('1.1', '<=', '1.1');