Errors like these are usually errors in the cmake files of the project explicitly requesting the dropped v1 signals library.
What is requested in /home/fm/autoenv_ws/src/mrt_cmake_modules/cmake/Modules/FindAutoDeps.cmake:253 And CMakeLists.txt:21 (find_package) ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876788 Title: libboost-signals-dev not present in focal (64 bit) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/boost-defaults/+bug/1876788/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs