Build Failure in `poisson_shell`: Missing `PICKUP_BENCHMARK` macro and Linker errors (Kokkos)

[youyoulyz]

Hi,

I am trying to compile the benchmark in the poisson_shell directory, but I am encountering build failures due to an incomplete CMakeLists.txt.

There are two main issues:

1. Missing Macro Definition: The CMakeLists.txt directly calls PICKUP_BENCHMARK without including the defining .cmake file, leading to an "Unknown CMake command" error.
2. Linker Errors: Even when the macro is manually included or fixed, the target fails to link against Kokkos (and likely deal.II libraries), resulting in undefined references.

Steps to Reproduce:

1. Navigate to poisson_shell (or poisson_cube).
2. Run CMake:

cmake -D DEAL_II_DIR=/usr/include/dealii -D CMAKE_BUILD_TYPE=Release .

3. Run Make:

make

Error Logs:

1. CMake Configuration Error:

CMake Error at CMakeLists.txt:1 (PICKUP_BENCHMARK):
  Unknown CMake command "PICKUP_BENCHMARK".

2. Linker Error (after attempting to build):

[100%] Linking CXX executable bench
/usr/bin/ld: CMakeFiles/poisson_shell.dir/program.cc.o: in function `Kokkos::RangePolicy<Kokkos::Serial, Kokkos::IndexType<unsigned int> >::check_bounds_validity()':
program.cc:(...): undefined reference to `Kokkos::Impl::log_warning(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/usr/bin/ld: CMakeFiles/poisson_shell.dir/program.cc.o: in function `void dealii::internal::set_initial_guess<float, dealii::MemorySpace::Host>(dealii::LinearAlgebra::distributed::Vector<float, dealii::MemorySpace::Host>&)':
program.cc:(...): undefined reference to `Kokkos::Serial::Serial()'
collect2: error: ld returned 1 exit status

Environment:

• OS: Linux (Ubuntu)
• Compiler: GNU 13.3.0
• deal.II Version: 9.7.1 installed at /usr/include/dealii

Sorry for the disturbulance.
Thanks!