ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/3883] 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_STD_THREAD
    _LIBCPP_PSTL_BACKEND_SERIAL
    _LIBCPP_PSTL_BACKEND_LIBDISPATCH
    _LIBCPP_PSTL_BACKEND_STATPART
[2/3883] ACTION //llvm/include/llvm/TargetParser:PPCGenTargetFeatures(//llvm/utils/gn/build/toolchain:unix)
[3/3882] ACTION //llvm/include/llvm/TargetParser:R600TargetParserDef(//llvm/utils/gn/build/toolchain:unix)
[4/3882] ACTION //llvm/include/llvm/TargetParser:AArch64TargetParserDef(//llvm/utils/gn/build/toolchain:unix)
[5/3874] ACTION //llvm/include/llvm/TargetParser:AMDGPUTargetParserDef(//llvm/utils/gn/build/toolchain:unix)
[6/3860] ACTION //llvm/include/llvm/TargetParser:RISCVTargetParserDef(//llvm/utils/gn/build/toolchain:unix)
[7/3857] LINK ./bin/llvm-tblgen
[8/3857] ACTION //llvm/include/llvm/IR:RuntimeLibcalls(//llvm/utils/gn/build/toolchain:unix)
[9/3857] ACTION //llvm/include/llvm/IR:IntrinsicsWebAssembly(//llvm/utils/gn/build/toolchain:unix)
[10/3853] ACTION //llvm/include/llvm/IR:IntrinsicsX86(//llvm/utils/gn/build/toolchain:unix)
[11/3850] ACTION //llvm/include/llvm/IR:IntrinsicsXCore(//llvm/utils/gn/build/toolchain:unix)
[12/3850] ACTION //llvm/include/llvm/IR:IntrinsicsVE(//llvm/utils/gn/build/toolchain:unix)
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.