[libc-dev] libc project can't be built together with other projects

[Siva Chandra via libc-dev]

I normally build clang and LLD along with libc and have not seen any
problems. I added openmp to that list now and could build without any
problems. My CMake line was:

$> cmake ../llvm -G Ninja
-DLLVM_ENABLE_PROJECTS="libc;clang;lld;openmp"
-DLLVM_USE_SANITIZER=Address

Can you share the cmake command line that is causing problems for you?

On Mon, Dec 2, 2019 at 2:41 PM Itaru Kitayama via libc-dev
<libc-dev at lists.llvm.org> wrote:
>
> If I add, for example, openmp to the list of projects, CMake errors out:
>
> [...]
> -- Performing Test HAVE_POSIX_REGEX
> -- Performing Test HAVE_POSIX_REGEX -- success
> -- Performing Test HAVE_STEADY_CLOCK
> -- Performing Test HAVE_STEADY_CLOCK
> -- Performing Test HAVE_STEADY_CLOCK -- success
> -- Configuring done
> CMake Error at cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-all" does not exist.
> Call Stack (most recent call first):
>   CMakeLists.txt:987 (add_lit_target)
>
>
> CMake Error at cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target "check-all" does
>   not exist.
> Call Stack (most recent call first):
>   CMakeLists.txt:987 (add_lit_target)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-openmp" does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:190 (add_openmp_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/CMakeLists.txt:95 (construct_check_openmp_target)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target "check-openmp"
>   does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:190 (add_openmp_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/CMakeLists.txt:95 (construct_check_openmp_target)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-ompt" does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/runtime/test/CMakeLists.txt:36 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target "check-ompt" does
>   not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/runtime/test/CMakeLists.txt:36 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-libomp" does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/runtime/test/CMakeLists.txt:33 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target "check-libomp"
>   does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/runtime/test/CMakeLists.txt:33 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-libomptarget" does not
>   exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/libomptarget/test/CMakeLists.txt:15 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target
>   "check-libomptarget" does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/libomptarget/test/CMakeLists.txt:15 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang" of target "check-libarcher" does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/tools/archer/tests/CMakeLists.txt:29 (add_openmp_testsuite)
>
>
> CMake Error at /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1456 (add_dependencies):
>   The dependency target "clang-resource-headers" of target "check-libarcher"
>   does not exist.
> Call Stack (most recent call first):
>   /fefs/home/r1050/projects/llvm-project/llvm/cmake/modules/AddLLVM.cmake:1477 (add_lit_target)
>   /fefs/home/r1050/projects/llvm-project/openmp/cmake/OpenMPTesting.cmake:175 (add_lit_testsuite)
>   /fefs/home/r1050/projects/llvm-project/openmp/tools/archer/tests/CMakeLists.txt:29 (add_openmp_testsuite)
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