ninja: Entering directory `out/gn'
[1/566] AR lib/libLLVMCodeGen.a
[2/566] 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_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_HAS_TERMINAL=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _LIBCPP_PSTL_BACKEND_LIBDISPATCH= _LIBCPP_PSTL_BACKEND_SERIAL= _LIBCPP_PSTL_BACKEND_STD_THREAD=1 _LIBCPP_ABI_NAMESPACE=__1 _LIBCPP_HAS_TIME_ZONE_DATABASE=1
Traceback (most recent call last):
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 122, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 75, in main
    if values[var] == "0":
       ~~~~~~^^^^^
KeyError: '_LIBCPP_LIBC_LLVM_LIBC'
[3/566] LINK obj/llvm/unittests/DWARFLinkerParallel/DWARFLinkerParallelTests
[4/566] LINK ./bin/lli-child-target
[5/566] LINK obj/llvm/unittests/MC/SystemZ/SystemZAsmLexerTests
[6/566] LINK obj/llvm/unittests/ExecutionEngine/ExecutionEngineTests
[7/566] LINK ./bin/llvm-cgdata
[8/566] LINK ./bin/llvm-nm
[9/566] LINK ./bin/llvm-mca
[10/566] LINK ./bin/llvm-bat-dump
[11/566] LINK ./bin/llvm-dwarfdump
[12/566] LINK ./bin/sancov
[13/566] LINK obj/bolt/unittests/Profile/ProfileTests
[14/566] LINK ./bin/llvm-debuginfo-analyzer
[15/566] LINK obj/llvm/unittests/tools/llvm-cfi-verify/CFIVerifyTests
[16/566] LINK ./bin/llvm-objdump
[17/566] LINK ./bin/llvm-cfi-verify
[18/566] LINK obj/llvm/unittests/Target/WebAssembly/WebAssemblyTests
[19/566] LINK obj/llvm/unittests/tools/llvm-exegesis/LLVMExegesisTests
[20/566] LINK ./bin/llvm-profgen
[21/566] LINK obj/llvm/unittests/Target/LoongArch/LoongArchTests
[22/566] LINK obj/llvm/unittests/Target/PowerPC/PowerPCTests
[23/566] LINK obj/llvm/unittests/Target/RISCV/RISCVTests
[24/566] LINK obj/llvm/unittests/Target/ARM/ARMTests
[25/566] LINK obj/llvm/unittests/Transforms/Scalar/ScalarTests
[26/566] LINK obj/llvm/unittests/Passes/Plugins/PluginsTests
[27/566] LINK obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests
[28/566] LINK ./bin/llvm-extract
[29/566] LINK obj/llvm/unittests/Transforms/Coroutines/CoroTests
[30/566] LINK obj/llvm/unittests/Analysis/AnalysisTests
[31/566] LINK obj/llvm/unittests/tools/llvm-exegesis/PowerPC/LLVMExegesisPowerPCTests
[32/566] LINK obj/llvm/unittests/Frontend/LLVMFrontendTests
[33/566] LINK obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests
[34/566] LINK obj/llvm/unittests/Target/AArch64/AArch64Tests
[35/566] LINK obj/llvm/unittests/Transforms/Utils/UtilsTests
[36/566] LINK obj/llvm/unittests/tools/llvm-exegesis/RISCV/LLVMExegesisRISCVTests
[37/566] LINK obj/llvm/unittests/Transforms/Instrumentation/InstrumentationTests
[38/566] LINK obj/llvm/unittests/IR/IRTests
[39/566] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[40/566] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[41/566] LINK ./bin/lldb-server
[42/566] LINK obj/clang/unittests/CodeGen/ClangCodeGenTests
[43/566] LINK ./bin/clang-import-test
[44/566] CXX obj/llvm/lib/Target/X86/GISel/LLVMX86CodeGen.X86PreLegalizerCombiner.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.