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[77.11.142.233]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e6d8d6963sm54932225e9.4.2026.05.10.21.50.02 for <maintonly@bugs.debian.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 21:50:02 -0700 (PDT) Sender: Anton Gladky <gladky.anton@gmail.com> Received: by gladklaptop.localdomain (Postfix, from userid 1000) id A8D3CF200B5; Mon, 11 May 2026 06:50:01 +0200 (CEST) Subject: bustools: 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 06:50:01 +0200 Message-Id: <20260511045001.A8D3CF200B5@gladklaptop.localdomain> Delivered-To: maintonly@bugs.debian.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Package: src:bustools Version: 0.45.1+dfsg-1 Severity: important Tags: sid forky 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 bustools FTBFS with libeigen3-dev 5.0.1. The full build log is available at: https://debusine.debian.net/debian/developers-gladk-eigen3/artifact/3754744/#L984-files Here is the most probably relevant part of the failing build log: ------------------------------------------------------ - ------------------------------------------------------ [ 61%] Building CXX object src/CMakeFiles/bustools_core.dir/bustools_predict.cpp.o cd /build/reproducible-path/bustools-0.45.1+dfsg/obj-x86_64-linux-gnu/src && /usr/bin/c++ -I/build/reproducible-path/bustools-0.45.1+dfsg/src -I/usr/include/eigen3 -I/usr/include/LBFGSpp -std=c++11 -g -O2 -ffile-prefix-map=/build/reproducible-path/bustools-0.45.1+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -g -g -flto -MD -MT src/CMakeFiles/bustools_core.dir/bustools_predict.cpp.o -MF CMakeFiles/bustools_core.dir/bustools_predict.cpp.o.d -o CMakeFiles/bustools_core.dir/bustools_predict.cpp.o -c /build/reproducible-path/bustools-0.45.1+dfsg/src/bustools_predict.cpp In file included from /usr/include/eigen3/Eigen/Core:22, from /build/reproducible-path/bustools-0.45.1+dfsg/src/bustools_predict.cpp:13: /usr/include/eigen3/Eigen/src/Core/util/Macros.h:749:2: error: #error Eigen requires at least c++14 support. 749 | #error Eigen requires at least c++14 support. | ^~~~~ [ 65%] Building CXX object src/CMakeFiles/bustools_core.dir/bustools_project.cpp.o cd /build/reproducible-path/bustools-0.45.1+dfsg/obj-x86_64-linux-gnu/src && /usr/bin/c++ -I/build/reproducible-path/bustools-0.45.1+dfsg/src -I/usr/include/eigen3 -I/usr/include/LBFGSpp -std=c++11 -g -O2 -ffile-prefix-map=/build/reproducible-path/bustools-0.45.1+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -g -g -flto -MD -MT src/CMakeFiles/bustools_core.dir/bustools_project.cpp.o -MF CMakeFiles/bustools_core.dir/bustools_project.cpp.o.d -o CMakeFiles/bustools_core.dir/bustools_project.cpp.o -c /build/reproducible-path/bustools-0.45.1+dfsg/src/bustools_project.cpp [ 69%] Building CXX object src/CMakeFiles/bustools_core.dir/bustools_sort.cpp.o cd /build/reproducible-path/bustools-0.45.1+dfsg/obj-x86_64-linux-gnu/src && /usr/bin/c++ -I/build/reproducible-path/bustools-0.45.1+dfsg/src -I/usr/include/eigen3 -I/usr/include/LBFGSpp -std=c++11 -g -O2 -ffile-prefix-map=/build/reproducible-path/bustools-0.45.1+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -g -g -flto -MD -MT src/CMakeFiles/bustools_core.dir/bustools_sort.cpp.o -MF CMakeFiles/bustools_core.dir/bustools_sort.cpp.o.d -o CMakeFiles/bustools_core.dir/bustools_sort.cpp.o -c /build/reproducible-path/bustools-0.45.1+dfsg/src/bustools_sort.cpp In file included from /usr/include/eigen3/Eigen/Core:185: /usr/include/eigen3/Eigen/src/Core/util/Meta.h:209:37: error: ‘remove_const_t’ is not a member of ‘std’; did you mean ‘remove_const’? [-Wtemplate-body] 209 | struct is_void : is_same<void, std::remove_const_t<T>> {}; | ^~~~~~~~~~~~~~ | remove_const /usr/include/eigen3/Eigen/src/Core/util/Meta.h:209:37: error: ‘remove_const_t’ is not a member of ‘std’; did you mean ‘remove_const’? [-Wtemplate-body] 209 | struct is_void : is_same<void, std::remove_const_t<T>> {}; | ^~~~~~~~~~~~~~ | remove_const /usr/include/eigen3/Eigen/src/Core/util/Meta.h:209:52: error: template argument 2 is invalid [-Wtemplate-body] 209 | struct is_void : is_same<void, std::remove_const_t<T>> {}; | ^ /usr/include/eigen3/Eigen/src/Core/util/Meta.h:209:53: error: expected ‘{’ before ‘>’ token 209 | struct is_void : is_same<void, std::remove_const_t<T>> {}; | ^~ /usr/include/eigen3/Eigen/src/Core/util/Meta.h:305:27: error: ‘enable_if_t’ is not a member of ‘std’ 305 | struct array_size<T, std::enable_if_t<((T::SizeAtCompileTime & 0) == 0)>> { | ^~~~~~~~~~~ /usr/include/eigen3/Eigen/src/Core/util/Meta.h:305:27: note: ‘std::enable_if_t’ is only available from C++14 onwards /usr/include/eigen3/Eigen/src/Core/util/Meta.h:305:27: error: ‘enable_if_t’ is not a member of ‘std’ /usr/include/eigen3/Eigen/src/Core/util/Meta.h:305:27: note: ‘std::enable_if_t’ is only available from C++14 onwards /usr/include/eigen3/Eigen/src/Core/util/Meta.h:305:71: error: type/value mismatch at argument 2 in template parameter list for ‘template<class T, class EnableIf> struct Eigen::internal::array_size’ ------------------------------------------------------ - ------------------------------------------------------ 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/wYFAmoBX/gACgkQ0+Fzg8+n /wa2yA//cUXQYZL030wsqeTbtXdqNS1AMxS7IzFFDz1QeTamoz8a1tlBVIEDVgrh I6sBNUMWCcEGKyj0iSxRXEKvhJiD0jNCCz11w6hPkX2VKsuqLroI7fmje7LVJI76 +2HZltFNnbKnRIZqWOm9zHdnb47r5BBARdh/Qs5do2y7cZCcERcCOoc4RExFVoYD F/qTwLdaEqcus/yEUdejKASojavrHZ4qPeLf+0stBkrKgkmw3vXboEYvDhT/KQ63 u8BXcvo4MIX4POqRwzbQitbEBfRgsbzi1jaMQLQHmDm0lXndDjHrOzScideeQadp ksoADNWbP9SRnWuENQ2gRiGX0ap+ylxHhmYjBQ0ULObxt9BHps7yDT064CW55aJi Wh+YJO881KUS9BXNOUz3yCGreUuhd2IbUECuAuf2rbQP9THZI4i5xYZpwfg9d+cc pxv+Q3vBknpT9E99oUImg8OqmXqc5p8VBFyWMy4lqXptjLjcoMlu8XHfPj2ey4jY BaruxbZMomGFV/biugfl2iuTlSnB+BqvGsE4liV9xcsH1y0NdChLRS+niH5jpw5U nC6Vj52jWgH1HOhk5QFQW4BlDcvLfchy7HF+aFApCteN0a57XQAJ/h/eA2A7bwAs KJT+eiIl4mm9cdOtDK36kmpWZJ1veWH2SVxicUL+m/7lZhlS0aw= =GYgb -----END PGP SIGNATURE----- ]