libcudaxx and mingw

[3rav]

I have error with Ninja generator:

-- The CXX compiler identification is Clang 13.0.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/clang++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- The C compiler identification is Clang 13.0.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/clang.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Enabled CUDA architectures: sm_35 sm_50 sm_52 sm_53 sm_60 sm_61 sm_62 sm_70 sm_72 sm_75 sm_80 compute_80
-- Configuring for standalone build.
-- Found LLVM_CONFIG_PATH as C:/msys64/mingw64/bin/llvm-config.exe
-- Found ZLIB: C:/msys64/mingw64/lib/libz.dll.a (found version "1.2.11")
-- Found LibXml2: C:/msys64/mingw64/lib/libxml2.dll.a (found version "2.9.12")
-- Found PythonInterp: C:/msys64/mingw64/bin/python.exe (found version "3.9.7")
-- Looking for fopen in c
-- Looking for fopen in c - not found
-- Looking for __gcc_personality_v0 in gcc_s
-- Looking for __gcc_personality_v0 in gcc_s - not found
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG - Success
-- Performing Test LIBCXX_HAS_COMMENT_LIB_PRAGMA
-- Performing Test LIBCXX_HAS_COMMENT_LIB_PRAGMA - Failed
-- Performing Test LIBCXX_HAVE_CXX_ATOMICS_WITHOUT_LIB
-- Performing Test LIBCXX_HAVE_CXX_ATOMICS_WITHOUT_LIB - Failed
CMake Warning at libcxx/cmake/Modules/CheckLibcxxAtomic.cmake:54 (message):
  Host compiler appears to require libatomic, but cannot find it.
Call Stack (most recent call first):
  libcxx/cmake/config-ix.cmake:76 (include)
  libcxx/CMakeLists.txt:488 (include)


-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Looking for ccos in m
-- Looking for ccos in m - found
-- Looking for clock_gettime in rt
-- Looking for clock_gettime in rt - not found
-- Performing Test LIBCXX_SUPPORTS_EHS_FLAG
-- Performing Test LIBCXX_SUPPORTS_EHS_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_EHA_FLAG
-- Performing Test LIBCXX_SUPPORTS_EHA_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_FNO_EXCEPTIONS_FLAG
-- Performing Test LIBCXX_SUPPORTS_FNO_EXCEPTIONS_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_GR_FLAG
-- Performing Test LIBCXX_SUPPORTS_GR_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_FNO_RTTI_FLAG
-- Performing Test LIBCXX_SUPPORTS_FNO_RTTI_FLAG - Success
-- Generating custom __config for non-DLL Windows build
-- Performing Test LIBCXX_SUPPORTS_ZL_FLAG
-- Performing Test LIBCXX_SUPPORTS_ZL_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIB_FLAG
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIB_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG
-- Performing Test LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_STD_COLON_CXX11_FLAG
-- Performing Test LIBCXX_SUPPORTS_STD_COLON_CXX11_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_NOSTDINCXX_FLAG
-- Performing Test LIBCXX_SUPPORTS_NOSTDINCXX_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_EQ_HIDDEN_FLAG
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_EQ_HIDDEN_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WALL_FLAG
-- Performing Test LIBCXX_SUPPORTS_WALL_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_FLAG
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_W_FLAG
-- Performing Test LIBCXX_SUPPORTS_W_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WWRITE_STRINGS_FLAG
-- Performing Test LIBCXX_SUPPORTS_WWRITE_STRINGS_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_UNUSED_PARAMETER_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_UNUSED_PARAMETER_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_LONG_LONG_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_LONG_LONG_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WERROR_EQ_RETURN_TYPE_FLAG
-- Performing Test LIBCXX_SUPPORTS_WERROR_EQ_RETURN_TYPE_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_SEMI_FLAG
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_SEMI_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_USER_DEFINED_LITERALS_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_USER_DEFINED_LITERALS_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_COVERED_SWITCH_DEFAULT_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_COVERED_SWITCH_DEFAULT_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_IGNORED_ATTRIBUTES_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_IGNORED_ATTRIBUTES_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_ERROR_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_ERROR_FLAG - Success
CMake Warning at C:/msys64/mingw64/lib/cmake/llvm/AddLLVM.cmake:1732 (message):
  LLVM_EXTERNAL_LIT set to C:/_/M/mingw-w64-clang/src/llvm/utils/lit/lit.py,
  but the path does not exist.
Call Stack (most recent call first):
  C:/msys64/mingw64/lib/cmake/llvm/AddLLVM.cmake:1777 (get_llvm_lit_path)
  C:/msys64/mingw64/lib/cmake/llvm/AddLLVM.cmake:1822 (add_lit_target)
  libcxx/test/CMakeLists.txt:81 (add_lit_testsuite)


-- there is no pre-generated ABI list for the requested libc++ configuration. check-cxx-abilist target is not supported
-- Configuring done
-- Generating done
-- Build files have been written to: C:/msys64/usr/local/pkg_libcxx/src/build-x86_64-w64-mingw32
ninja: error: 'C:/msys64/usr/local/pkg_libcxx/src/libcudacxx-1.5.0/include/__config', needed by 'libcxx/__generated_config', missing and no known rule to make it

but with "MSYS Makefiles" generator error occurs at 95%:

C:/msys64/usr/local/pkg_libcxx/src/libcudacxx-1.5.0/libcxx/src/support/win32/thread_win32.cpp:133:5: error: redefinition of '__libcpp_condvar_destroy'
int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv)
    ^
C:/msys64/usr/local/pkg_libcxx/src/libcudacxx-1.5.0/libcxx/include/__threading_support:429:5: note: previous definition is here
int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv)
    ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[2]: *** [libcxx/src/CMakeFiles/cxx_static.dir/build.make:594: libcxx/src/CMakeFiles/cxx_static.dir/support/win32/thread_win32.cpp.obj] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:540: libcxx/src/CMakeFiles/cxx_static.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

[wmaxey]

Please add full steps for what you are trying to do, generally consumers do not need to build or configure the library.

[wmaxey]

Closing, we now have some proper support for being used as a sub project in CMake which may solve issues such as this.

#242