ninja: Entering directory `out/gn'
[1/377] AR lib/liblldELF.a
[2/377] ACTION //llvm/tools/llvm-objdump:llvm-otool(//llvm/utils/gn/build/toolchain:unix)
[3/377] ACTION //llvm/utils/llvm-lit:llvm-lit(//llvm/utils/gn/build/toolchain:unix)
FAILED: bin/llvm-lit 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o bin/llvm-lit ../../llvm/utils/llvm-lit/llvm-lit.in LLVM_SOURCE_DIR=../../../llvm Python3_EXECUTABLE=/usr/bin/env\ python3 BUILD_MODE=. LLVM_LIT_CONFIG_MAP=\#\ Takes\ a\ path\ that\'s\ relative\ to\ __file__\ and\ makes\ it\ absolute.\\ndef\ path\(p\):\\n\ \ \ \ return\ os.path.abspath\(os.path.join\(__file__,\ \'..\',\ p\)\)\ if\ p\ else\ \'\'\\n\\nmap_config\(\\n\ \ \ \ path\(r\'../../../bolt/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/bolt/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../bolt/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/bolt/test/Unit/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang-tools-extra/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang-tools-extra/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang-tools-extra/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang-tools-extra/test/Unit/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang-tools-extra/clangd/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang-tools-extra/clangd/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang-tools-extra/clangd/unittests/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang-tools-extra/clangd/unittests/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../clang/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/clang/test/Unit/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lld/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lld/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lld/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lld/test/Unit/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lldb/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lldb/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lldb/test/API/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lldb/test/API/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lldb/test/Shell/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lldb/test/Shell/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../lldb/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/lldb/test/Unit/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../llvm/test/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/llvm/test/lit.site.cfg.py\'\)\)\\nmap_config\(\\n\ \ \ \ path\(r\'../../../llvm/test/Unit/lit.cfg.py\'\),\\n\ \ \ \ path\(r\'../gen/llvm/test/Unit/lit.site.cfg.py\'\)\)
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 72, in main
    in_line = var_re.sub(repl, in_line)
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 70, in repl
    return values[key]
           ~~~~~~^^^^^
KeyError: 'LLVM_WINDOWS_PREFER_FORWARD_SLASH'
[4/377] LINK ./bin/llvm-cxxmap
[5/377] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[6/377] LINK ./bin/llvm-cxxdump
[7/377] LINK ./bin/llvm-mc
[8/377] LINK ./bin/llvm-lipo
[9/377] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[10/377] LINK ./bin/llvm-libtool-darwin
[11/377] LINK ./bin/llvm-jitlink
[12/377] LINK ./bin/llvm-rtdyld
[13/377] LINK ./bin/llvm-ar
[14/377] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[15/377] LINK ./bin/llvm-xray
[16/377] LINK ./bin/llvm-ml
[17/377] LINK obj/llvm/unittests/MC/MCTests
[18/377] LINK obj/bolt/unittests/Core/CoreTests
[19/377] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[20/377] LINK ./bin/llvm-bolt-heatmap
[21/377] LINK ./bin/llvm-bolt
[22/377] LINK ./bin/llvm-exegesis
[23/377] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[24/377] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[25/377] LINK obj/bolt/unittests/Passes/PassTests
[26/377] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[27/377] LINK ./bin/llvm-reduce
[28/377] LINK ./bin/llvm-opt-fuzzer
[29/377] LINK obj/llvm/unittests/MI/MITests
[30/377] LINK ./bin/llvm-gsymutil
[31/377] LINK ./bin/llvm-dwp
[32/377] LINK ./bin/llvm-lto
[33/377] LINK ./bin/clang-linker-wrapper
[34/377] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[35/377] LINK ./bin/llvm-c-test
[36/377] LINK obj/llvm/unittests/Target/TargetMachineCTests
[37/377] LINK ./bin/llvm-split
[38/377] LINK ./bin/llvm-isel-fuzzer
[39/377] LINK ./bin/opt
[40/377] LINK ./bin/dsymutil
[41/377] LINK obj/llvm/unittests/MIR/MIRTests
[42/377] LINK ./bin/llvm-dwarfutil
[43/377] LINK ./bin/llvm-ir2vec
[44/377] LINK ./bin/clang-nvlink-wrapper
[45/377] LINK ./bin/clang-sycl-linker
[46/377] LINK ./bin/llc
[47/377] LINK ./bin/llvm-lto2
[48/377] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[49/377] LINK ./bin/lld
[50/377] SOLINK ./lib/libLTO.so
[51/377] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[52/377] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[53/377] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[54/377] CXX obj/clang/lib/AST/ByteCode/AST.Program.o
[55/377] CXX obj/clang/lib/AST/ByteCode/AST.EvalEmitter.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.