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:
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[ 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’