Bug#1136235: getdp: FTBFS with libeigen3-dev 5.0 (major version transition)

[Anton Gladky]

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Hash: SHA512

Package: src:getdp
Version: 3.5.0+dfsg1-5
Severity: important
Tags: sid forky ftbfs
User: debian-devel at 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

getdp FTBFS with libeigen3-dev 5.0.1. The full build log is available at:

  https://debusine.debian.net/debian/developers-gladk-eigen3/artifact/3755847/

Here is the most probably relevant part of the failing build log:
    ===========================================
[ 29%] Building CXX object CMakeFiles/getdp.dir/src/functions/BF_NodeXYZ.cpp.o
/usr/bin/mpicxx  -I/usr/include/eigen3 -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/common -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/interface -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/kernel -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/numeric -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/functions -I/usr/lib/x86_64-linux-gnu/openmpi/include -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -I/usr/include/gmsh -I/usr/include/slepc -I/usr/include/petsc -I/usr/include/python3.13 -I/build/reproducible-path/getdp-3.5.0+dfsg1/debian/build/petsc/src/common -g -O2 -ffile-prefix-map=/build/reproducible-path/getdp-3.5.0+dfsg1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++11 -Wall -Wno-misleading-indentation -MD -MT CMakeFiles/getdp.dir/src/functions/BF_NodeXYZ.cpp.o -MF CMakeFiles/getdp.dir/src/functions/BF_NodeXYZ.cpp.o.d -o CMakeFiles/getdp.dir/src/fun
 ctions/BF_NodeXYZ.cpp.o -c /build/reproducible-path/getdp-3.5.0+dfsg1/src/functions/BF_NodeXYZ.cpp
In file included from /usr/include/eigen3/Eigen/Core:22,
                 from /usr/include/eigen3/Eigen/Dense:1,
                 from /usr/include/gmsh/fullMatrix.h:21,
                 from /usr/include/gmsh/nodalBasis.h:9,
                 from /build/reproducible-path/getdp-3.5.0+dfsg1/src/functions/BF_Node.cpp:17:
/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.
      |  ^~~~~
[ 29%] Building CXX object CMakeFiles/getdp.dir/src/functions/BF_Node_2.cpp.o
/usr/bin/mpicxx  -I/usr/include/eigen3 -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/common -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/interface -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/kernel -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/numeric -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/functions -I/usr/lib/x86_64-linux-gnu/openmpi/include -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -I/usr/include/gmsh -I/usr/include/slepc -I/usr/include/petsc -I/usr/include/python3.13 -I/build/reproducible-path/getdp-3.5.0+dfsg1/debian/build/petsc/src/common -g -O2 -ffile-prefix-map=/build/reproducible-path/getdp-3.5.0+dfsg1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++11 -Wall -Wno-misleading-indentation -MD -MT CMakeFiles/getdp.dir/src/functions/BF_Node_2.cpp.o -MF CMakeFiles/getdp.dir/src/functions/BF_Node_2.cpp.o.d -o CMakeFiles/getdp.dir/src/funct
 ions/BF_Node_2.cpp.o -c /build/reproducible-path/getdp-3.5.0+dfsg1/src/functions/BF_Node_2.cpp
[ 30%] Building CXX object CMakeFiles/getdp.dir/src/functions/BF_Node_3.cpp.o
/usr/bin/mpicxx  -I/usr/include/eigen3 -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/common -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/interface -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/kernel -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/numeric -I/build/reproducible-path/getdp-3.5.0+dfsg1/src/functions -I/usr/lib/x86_64-linux-gnu/openmpi/include -I/usr/lib/x86_64-linux-gnu/openmpi/include/openmpi -I/usr/include/gmsh -I/usr/include/slepc -I/usr/include/petsc -I/usr/include/python3.13 -I/build/reproducible-path/getdp-3.5.0+dfsg1/debian/build/petsc/src/common -g -O2 -ffile-prefix-map=/build/reproducible-path/getdp-3.5.0+dfsg1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wall -pedantic -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++11 -Wall -Wno-misleading-indentation -MD -MT CMakeFiles/getdp.dir/src/functions/BF_Node_3.cpp.o -MF CMakeFiles/getdp.dir/src/functions/BF_Node_3.cpp.o.d -o CMakeFiles/getdp.dir/src/funct
 ions/BF_Node_3.cpp.o -c /build/reproducible-path/getdp-3.5.0+dfsg1/src/functions/BF_Node_3.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]

    ===========================================
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
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