ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/401] AR lib/libLLVMAsmPrinter.a
[2/401] AR lib/libclangCodeGen.a
[3/401] 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'
[4/401] ACTION //clang/tools/clang-linker-wrapper:LinkerWrapperOpts(//llvm/utils/gn/build/toolchain:unix)
[5/401] LINK obj/llvm/unittests/DWARFLinkerParallel/DWARFLinkerParallelTests
[6/401] LINK obj/llvm/unittests/MC/SystemZ/SystemZAsmLexerTests
[7/401] LINK obj/llvm/unittests/MC/X86/X86MCTests
[8/401] LINK ./bin/llvm-cxxmap
[9/401] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[10/401] LINK ./bin/llvm-cxxdump
[11/401] LINK ./bin/sancov
[12/401] LINK ./bin/llvm-bat-dump
[13/401] LINK ./bin/llvm-mca
[14/401] LINK ./bin/llvm-objdump
[15/401] LINK ./bin/llvm-rtdyld
[16/401] LINK ./bin/llvm-mc
[17/401] LINK ./bin/llvm-debuginfo-analyzer
[18/401] LINK ./bin/llvm-xray
[19/401] LINK ./bin/llvm-cfi-verify
[20/401] LINK obj/bolt/unittests/Profile/ProfileTests
[21/401] LINK ./bin/llvm-libtool-darwin
[22/401] LINK ./bin/llvm-lipo
[23/401] LINK ./bin/llvm-ml
[24/401] LINK ./bin/llvm-profgen
[25/401] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[26/401] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[27/401] LINK obj/llvm/unittests/MC/MCTests
[28/401] LINK ./bin/llvm-jitlink
[29/401] LINK ./bin/llvm-bolt
[30/401] LINK ./bin/lli
[31/401] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[32/401] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[33/401] LINK ./bin/llvm-ar
[34/401] LINK obj/bolt/unittests/Passes/PassTests
[35/401] LINK obj/llvm/unittests/ExecutionEngine/Orc/OrcJITTests
[36/401] LINK obj/bolt/unittests/Core/CoreTests
[37/401] LINK obj/llvm/unittests/ExecutionEngine/MCJIT/MCJITTests
[38/401] LINK ./bin/llvm-bolt-heatmap
[39/401] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[40/401] LINK ./bin/llvm-lto2
[41/401] LINK ./bin/llvm-reduce
[42/401] LINK ./bin/llvm-isel-fuzzer
[43/401] LINK obj/llvm/unittests/MIR/MIRTests
[44/401] LINK ./bin/llvm-split
[45/401] LINK ./bin/llvm-lto
[46/401] LINK ./bin/clang-sycl-linker
[47/401] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[48/401] LINK ./bin/llvm-c-test
[49/401] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[50/401] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[51/401] LINK ./bin/llvm-dwarfutil
[52/401] LINK ./bin/dsymutil
[53/401] LINK ./bin/opt
[54/401] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[55/401] LINK obj/llvm/unittests/MI/MITests
[56/401] LINK ./bin/llvm-dwp
[57/401] LINK ./bin/llvm-ir2vec
[58/401] LINK obj/clang/unittests/CodeGen/ClangCodeGenTests
[59/401] LINK ./bin/llvm-exegesis
[60/401] LINK ./bin/llvm-gsymutil
[61/401] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[62/401] LINK ./bin/lld
[63/401] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[64/401] LINK ./bin/llvm-opt-fuzzer
[65/401] SOLINK ./lib/libLTO.so
[66/401] LINK ./bin/llc
[67/401] LINK ./bin/clang-nvlink-wrapper
[68/401] CXX obj/clang/lib/Driver/ToolChains/Driver.Clang.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.