clang: error: unknown argument: '-fjit'

[bobhan1]

I follow the getting started in wiki to build and install the project on ubuntu, but it can't work.

$ /bin/clang++ test1.cpp -o test1 -fjit
$ clang: error: unknown argument: '-fjit'

Test info:

********************
Testing Time: 788.21s
********************
Failing Tests (117):
    Clang :: CodeGen/atomics-inlining.c
    Clang :: CodeGen/long_double_fp128.cpp
    Clang :: CodeGen/ppc-signbit.c
    Clang :: CodeGen/ppc64-complex-parms.c
    Clang :: CodeGen/ppc64-complex-return.c
    Clang :: CodeGen/ppc64-elf-abi.c
    Clang :: CodeGen/ppc64-qpx-vector.c
    Clang :: CodeGen/ppc64-soft-float.c
    Clang :: CodeGen/ppc64-vector.c
    Clang :: CodeGen/ppc64le-aggregates.c
    Clang :: CodeGen/ppc64le-f128Aggregates.c
    Clang :: CodeGen/transparent-union.c
    Clang :: CodeGenCXX/float128-declarations.cpp
    Clang :: CodeGenCXX/homogeneous-aggregates.cpp
    Clang :: CodeGenCXX/observe-noexcept.cpp
    Clang :: Driver/le32-unknown-nacl.cpp
    Clang :: OpenMP/declare_target_codegen.cpp
    Clang :: OpenMP/declare_target_link_codegen.cpp
    Clang :: OpenMP/distribute_codegen.cpp
    Clang :: OpenMP/distribute_firstprivate_codegen.cpp
    Clang :: OpenMP/distribute_lastprivate_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_firstprivate_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_lastprivate_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_private_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_simd_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/distribute_parallel_for_simd_private_codegen.cpp
    Clang :: OpenMP/distribute_private_codegen.cpp
    Clang :: OpenMP/distribute_simd_codegen.cpp
    Clang :: OpenMP/distribute_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/distribute_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/distribute_simd_private_codegen.cpp
    Clang :: OpenMP/distribute_simd_reduction_codegen.cpp
    Clang :: OpenMP/nvptx_declare_target_var_ctor_dtor_codegen.cpp
    Clang :: OpenMP/openmp_offload_codegen.cpp
    Clang :: OpenMP/target_codegen.cpp
    Clang :: OpenMP/target_codegen_global_capture.cpp
    Clang :: OpenMP/target_codegen_registration.cpp
    Clang :: OpenMP/target_depend_codegen.cpp
    Clang :: OpenMP/target_firstprivate_codegen.cpp
    Clang :: OpenMP/target_map_codegen.cpp
    Clang :: OpenMP/target_parallel_codegen.cpp
    Clang :: OpenMP/target_parallel_codegen_registration.cpp
    Clang :: OpenMP/target_parallel_depend_codegen.cpp
    Clang :: OpenMP/target_parallel_for_codegen.cpp
    Clang :: OpenMP/target_parallel_for_codegen_registration.cpp
    Clang :: OpenMP/target_parallel_for_depend_codegen.cpp
    Clang :: OpenMP/target_parallel_for_simd_codegen.cpp
    Clang :: OpenMP/target_parallel_for_simd_codegen_registration.cpp
    Clang :: OpenMP/target_parallel_for_simd_depend_codegen.cpp
    Clang :: OpenMP/target_parallel_if_codegen.cpp
    Clang :: OpenMP/target_parallel_num_threads_codegen.cpp
    Clang :: OpenMP/target_private_codegen.cpp
    Clang :: OpenMP/target_reduction_codegen.cpp
    Clang :: OpenMP/target_simd_codegen.cpp
    Clang :: OpenMP/target_simd_codegen_registration.cpp
    Clang :: OpenMP/target_simd_depend_codegen.cpp
    Clang :: OpenMP/target_teams_codegen.cpp
    Clang :: OpenMP/target_teams_codegen_registration.cpp
    Clang :: OpenMP/target_teams_depend_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_codegen_registration.cpp
    Clang :: OpenMP/target_teams_distribute_depend_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_firstprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_lastprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_depend_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_firstprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_lastprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_private_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_reduction_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_codegen_registration.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_depend_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_private_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_parallel_for_simd_reduction_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_private_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_reduction_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_codegen_registration.cpp
    Clang :: OpenMP/target_teams_distribute_simd_depend_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_private_codegen.cpp
    Clang :: OpenMP/target_teams_distribute_simd_reduction_codegen.cpp
    Clang :: OpenMP/target_teams_num_teams_codegen.cpp
    Clang :: OpenMP/target_teams_thread_limit_codegen.cpp
    Clang :: OpenMP/taskloop_reduction_codegen.cpp
    Clang :: OpenMP/taskloop_simd_reduction_codegen.cpp
    Clang :: OpenMP/teams_codegen.cpp
    Clang :: OpenMP/teams_distribute_codegen.cpp
    Clang :: OpenMP/teams_distribute_firstprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_lastprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_copyin_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_firstprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_lastprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_private_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_reduction_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_simd_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_simd_private_codegen.cpp
    Clang :: OpenMP/teams_distribute_parallel_for_simd_reduction_codegen.cpp
    Clang :: OpenMP/teams_distribute_private_codegen.cpp
    Clang :: OpenMP/teams_distribute_reduction_codegen.cpp
    Clang :: OpenMP/teams_distribute_simd_codegen.cpp
    Clang :: OpenMP/teams_distribute_simd_firstprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_simd_lastprivate_codegen.cpp
    Clang :: OpenMP/teams_distribute_simd_private_codegen.cpp
    Clang :: OpenMP/teams_distribute_simd_reduction_codegen.cpp
    Clang :: OpenMP/teams_firstprivate_codegen.cpp
    Clang :: OpenMP/teams_private_codegen.cpp

  Expected Passes    : 13941
  Expected Failures  : 19
  Unsupported Tests  : 91
  Unexpected Failures: 117
make[3]: *** [tools/clang/test/CMakeFiles/check-clang.dir/build.make:58: tools/clang/test/CMakeFiles/check-clang] Error 1
make[2]: *** [CMakeFiles/Makefile2:45282: tools/clang/test/CMakeFiles/check-clang.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:45289: tools/clang/test/CMakeFiles/check-clang.dir/rule] Error 2
make: *** [Makefile:12133: check-clang] Error 2

[cnergyone]

Most likely it is finding another clang already installed on your system. Make your PATH variable point to where the newly JITy clang is installed. You should do make install after the build.