hyrise: Linker error when linking to std::filesystem with clang on Pella

Linker fails when compiling hyriseTest or hyriseConsole with clang on Pella. The issue can be resolved by always using std::experimental::filesystem in filesystem.hpp. Although it only occurs on Pella and not on MacOs or Jenkins, I think that it is not caused by a wrong setup. I suspect that this stackoverflow anwser might solve this issue but I am unsure how to link to -lstdc++fs. Linker error:

[100%] Linking CXX executable ../../hyriseTest
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>create_test_data_directory(std::optional<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >&)<<:
/home/Fabian.Wiebe/origin-hyrise/src/test/gtest_main.cpp:17: Warnung: undefinierter Verweis auf >>std::filesystem::create_directory(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>remove_test_data_directory()<<:
/home/Fabian.Wiebe/origin-hyrise/src/test/gtest_main.cpp:22: Warnung: undefinierter Verweis auf >>std::filesystem::remove_all(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>std::filesystem::exists(std::filesystem::__cxx11::path const&)<<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_ops.h:121: Warnung: undefinierter Verweis auf >>std::filesystem::status(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::filesystem::__cxx11::path><<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:183: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:176: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<char [16], std::filesystem::__cxx11::path><<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:183: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
clang: error: linker command failed with exit code 1 (use -v to see invocation)
src/test/CMakeFiles/hyriseTest.dir/build.make:3896: recipe for target 'hyriseTest' failed
make[3]: *** [hyriseTest] Error 1
CMakeFiles/Makefile2:1492: recipe for target 'src/test/CMakeFiles/hyriseTest.dir/all' failed
make[2]: *** [src/test/CMakeFiles/hyriseTest.dir/all] Error 2
CMakeFiles/Makefile2:1504: recipe for target 'src/test/CMakeFiles/hyriseTest.dir/rule' failed
make[1]: *** [src/test/CMakeFiles/hyriseTest.dir/rule] Error 2
Makefile:541: recipe for target 'hyriseTest' failed
make: *** [hyriseTest] Error 2

Linker error with invocation:

[100%] Linking CXX executable ../../hyriseTest
clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8.0.1
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1
Candidate multilib: .;@m64
Selected multilib: .;@m64
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CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>create_test_data_directory(std::optional<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >&)<<:
/home/Fabian.Wiebe/origin-hyrise/src/test/gtest_main.cpp:17: Warnung: undefinierter Verweis auf >>std::filesystem::create_directory(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>remove_test_data_directory()<<:
/home/Fabian.Wiebe/origin-hyrise/src/test/gtest_main.cpp:22: Warnung: undefinierter Verweis auf >>std::filesystem::remove_all(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>std::filesystem::exists(std::filesystem::__cxx11::path const&)<<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_ops.h:121: Warnung: undefinierter Verweis auf >>std::filesystem::status(std::filesystem::__cxx11::path const&)<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::filesystem::__cxx11::path><<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:183: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:176: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
CMakeFiles/hyriseTest.dir/gtest_main.cpp.o: In Funktion >>path<char [16], std::filesystem::__cxx11::path><<:
/usr/bin/../lib/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/fs_path.h:183: Warnung: undefinierter Verweis auf >>std::filesystem::__cxx11::path::_M_split_cmpts()<<
clang: error: linker command failed with exit code 1 (use -v to see invocation)
src/test/CMakeFiles/hyriseTest.dir/build.make:3896: recipe for target 'hyriseTest' failed
make[3]: *** [hyriseTest] Error 1
CMakeFiles/Makefile2:1492: recipe for target 'src/test/CMakeFiles/hyriseTest.dir/all' failed
make[2]: *** [src/test/CMakeFiles/hyriseTest.dir/all] Error 2
CMakeFiles/Makefile2:1504: recipe for target 'src/test/CMakeFiles/hyriseTest.dir/rule' failed
make[1]: *** [src/test/CMakeFiles/hyriseTest.dir/rule] Error 2
Makefile:541: recipe for target 'hyriseTest' failed
make: *** [hyriseTest] Error 2