ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/7175] AR lib/libLLVMSupport.a
[2/7175] ACTION //libcxx/include:write_config_site(//llvm/utils/gn/build/toolchain:unix)
FAILED: include/c++/v1/__config_site 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o include/c++/v1/__config_site ../../libcxx/include/__config_site.in _LIBCPP_ABI_FORCE_ITANIUM= _LIBCPP_ABI_FORCE_MICROSOFT= _LIBCPP_ABI_VERSION=1 _LIBCPP_ASSERTION_SEMANTIC_DEFAULT=_LIBCPP_ASSERTION_SEMANTIC_HARDENING_DEPENDENT _LIBCPP_EXTRA_SITE_DEFINES= _LIBCPP_HAS_FILESYSTEM=1 _LIBCPP_HAS_THREADS=1 _LIBCPP_HAS_MONOTONIC_CLOCK=1 _LIBCPP_HAS_MUSL_LIBC= _LIBCPP_HAS_THREAD_API_C11= _LIBCPP_HAS_THREAD_API_PTHREAD= _LIBCPP_HAS_THREAD_API_EXTERNAL= _LIBCPP_HAS_THREAD_API_WIN32= _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS= _LIBCPP_HAS_VENDOR_AVAILABILITY_ANNOTATIONS= _LIBCPP_NO_VCRUNTIME= _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION= _LIBCPP_HAS_RANDOM_DEVICE=1 _LIBCPP_HAS_LOCALIZATION=1 _LIBCPP_HAS_UNICODE=1 _LIBCPP_HAS_WIDE_CHARACTERS=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _LIBCPP_LIBC_LLVM_LIBC= _LIBCPP_PSTL_BACKEND_LIBDISPATCH= _LIBCPP_PSTL_BACKEND_SERIAL= _LIBCPP_PSTL_BACKEND_STATPART= _LIBCPP_PSTL_BACKEND_STD_THREAD=1 _LIBCPP_ABI_NAMESPACE=__1 _LIBCPP_ABI_NAMESPACE_LEN=3 _LIBCPP_HAS_TIME_ZONE_DATABASE=1
unused values args:
    _LIBCPP_PSTL_BACKEND_LIBDISPATCH
    _LIBCPP_PSTL_BACKEND_SERIAL
    _LIBCPP_PSTL_BACKEND_STATPART
    _LIBCPP_PSTL_BACKEND_STD_THREAD
[3/7175] AR lib/libgtest_main.a
[4/7175] LINK ./bin/not
[5/7175] LINK ./bin/lldb-argdumper
[6/7175] LINK obj/llvm/unittests/Support/DynamicLibrary/DynamicLibraryTests
[7/7175] LINK obj/llvm/unittests/LineEditor/LineEditorTests
[8/7175] LINK obj/llvm/unittests/CAS/CASTests
[9/7175] LINK ./bin/yaml-bench
[10/7175] LINK obj/llvm/unittests/FileCheck/FileCheckTests
[11/7175] LINK obj/llvm/unittests/DebugInfo/MSF/DebugInfoMSFTests
[12/7175] LINK obj/llvm/unittests/Bitstream/BitstreamTests
[13/7175] LINK obj/llvm/unittests/HTTP/HTTPTests
[14/7175] LINK ./bin/clang-tidy-confusable-chars-gen
[15/7175] LINK obj/llvm/unittests/DebugInfo/CodeView/DebugInfoCodeViewTests
[16/7175] LINK obj/llvm/unittests/Testing/ADT/TestingADTTests
[17/7175] LINK obj/llvm/unittests/Testing/Support/TestingSupportTests
[18/7175] LINK ./bin/FileCheck
[19/7175] LINK obj/llvm/unittests/Support/LSP/LSPTests
[20/7175] LINK ./bin/llvm-undname
[21/7175] LINK obj/llvm/unittests/Demangle/DemangleTests
[22/7175] LINK ./bin/lldb-tblgen
[23/7175] LINK ./bin/llvm-min-tblgen
[24/7175] LINK ./bin/clang-tblgen
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.