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[77.11.142.233]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4548e4bb87bsm22120437f8f.2.2026.05.10.22.22.39 for <maintonly@bugs.debian.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 22:22:39 -0700 (PDT) Sender: Anton Gladky <gladky.anton@gmail.com> Received: by gladklaptop.localdomain (Postfix, from userid 1000) id 1826FF200B5; Mon, 11 May 2026 07:22:39 +0200 (CEST) Subject: lbfgspp: FTBFS with libeigen3-dev 5.0 (major version transition) From: Anton Gladky <gladk@debian.org> To: <maintonly@bugs.debian.org> User-Agent: mail (GNU Mailutils 3.20) Date: Mon, 11 May 2026 07:22:39 +0200 Message-Id: <20260511052239.1826FF200B5@gladklaptop.localdomain> Delivered-To: maintonly@bugs.debian.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Package: src:lbfgspp Version: 0.4.0-1 Severity: important Tags: sid forky ftbfs User: debian-devel@lists.debian.org Usertags: eigen3-5.0 Dear Maintainer, your package depends on libeigen3-dev. The upstream released a new major version of this mathematical library, 5.0.0. Some basic information about new features and changes in this version can be found here: https://libeigen.gitlab.io/releases/5.0/ This is a major version change and may require code changes in packages depending on eigen3. The key breaking changes include: - Minimum required C++ standard is now C++14 - Changes in the build system integration - Some API name changes lbfgspp FTBFS with libeigen3-dev 5.0.1. The full build log is available at: https://debusine.debian.net/debian/developers-gladk-eigen3/artifact/3757053/ Here is the most probably relevant part of the failing build log: =========================================== - -- Performing Test WALL_SUPPORTED - -- Performing Test WALL_SUPPORTED - Success CMake Error at CMakeLists.txt:41 (find_package): Could not find a configuration file for package "Eigen3" that is compatible with requested version "3.0". The following configuration files were considered but not accepted: /usr/share/eigen3/cmake/Eigen3Config.cmake, version: 5.0.1 The version found is not compatible with the version requested. - -- Configuring incomplete, errors occurred! cd obj-x86_64-linux-gnu && tail -v -n \+0 CMakeCache.txt =========================================== libeigen3-dev_5.0.1-1 is available in experimental. When this package version lands into unstable (probably at the beginning of June 2026), this bug will be increased in severity to serious. Thanks, Anton -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEu71F6oGKuG/2fnKF0+Fzg8+n/wYFAmoBZ50ACgkQ0+Fzg8+n /wb61g//T0UQ9UAvu/tQU3HFpyqDvGLujtWXdjMP38i4RRsmqH/Z7L3BqJv9ZL6n FIk4Q9Vu0vgZoCYugev82Xu2tNlDGC+8gEoM2SOm9rVgPY4NV/pfic45tMfPMiQL CzBucpGcuDy9xsDGZCKTolUjTWtgjdXg+Mx8WzfWzsfKWYgl15yuio2e7cq1IvPY YVsFFEpT2CcLAT3UbSQMo1VMk3fnEA5+AJ09vZpAaFdhmZbG8B38b/KiOFDD47iV wbJxE++nEJgDGbAcGKWdY6p8FnbgJqIrhRH8NSdU+VPAN3/Na5nzczfh2INzmxTF IzaDQHERxuK4PEM5XJqTDEnmM92N9nh6maBiMkfWEFV78ksPM8MgyDcyXPs/wRzc cgGnK8F9/LvCRVbJm1BgQOODoQWx6aS/Le6gxF1Y6l3oUjoJCY6wHKFd+G0SG6l8 0h03cY1IA3qqONtrlRaP24GJewwpvzpXWdKmcCXpScLsxd+VQlxNnJj9JI7zA9PM lxtsAuMtrTeSvbnEU9u3pDCyqfGXjR84IwZKrgcRYbzuubAWhYgfd1cq2VYhzHmS IXYEFOfJ4hBZrBYwMwS1TYfh001Kt/phmFFEBfYtvVRpb+uzyLyRozuEuYrvR3Ob 6xfGpTpxI8JfzjrFxxtUez7dY+ssjeFidN/d8N6n45UtER+wq80= =2ave -----END PGP SIGNATURE----- ]