message: cmake: Fix fizzy-bench linking with stdc++fs
diff: @@ -6,3 +6,11 @@ add_executable(fizzy-bench bench.cpp)
  target_compile_features(fizzy-bench PRIVATE cxx_std_17)
  target_link_libraries(fizzy-bench PRIVATE fizzy::fizzy fizzy::test-utils benchmark::benchmark)
  target_include_directories(fizzy-bench PRIVATE ${fizzy_include_dir})
  +
  +if(UNIX AND NOT APPLE)
  + # For libstdc++ up to version 8 (included) this is needed for proper <filesystem> support.
  + # Otherwise, the result program will crash on first use (no linker errors).
  + # For libstdc++ 9, this is not needed, but cause no harm.
  + # Clang compiler on linux may select libstdc++8 in some configurations.
  + target_link_libraries(fizzy-bench PRIVATE stdc++fs)
  +endif()
  