ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/484] AR lib/libclangQuery.a
[2/484] AR lib/libclangRewriteFrontend.a
[3/484] AR lib/libLLVMSelectionDAG.a
[4/484] AR lib/libclangIndex.a
[5/484] AR lib/libclangReorderFields.a
[6/484] 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'
[7/484] AR lib/libclangCrossTU.a
[8/484] AR lib/libclangDriver.a
[9/484] AR lib/libclangCodeGen.a
[10/484] LINK obj/llvm/unittests/MC/SystemZ/SystemZAsmLexerTests
[11/484] LINK obj/llvm/unittests/MC/X86/X86MCTests
[12/484] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[13/484] LINK ./bin/llvm-cxxmap
[14/484] LINK ./bin/llvm-mca
[15/484] LINK ./bin/llvm-debuginfo-analyzer
[16/484] LINK ./bin/llvm-cxxdump
[17/484] LINK ./bin/llvm-ml
[18/484] LINK ./bin/sancov
[19/484] LINK ./bin/llvm-libtool-darwin
[20/484] LINK ./bin/llvm-cfi-verify
[21/484] LINK ./bin/llvm-lipo
[22/484] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[23/484] LINK ./bin/llvm-mc
[24/484] LINK ./bin/llvm-profgen
[25/484] LINK obj/llvm/unittests/MC/MCTests
[26/484] LINK ./bin/llvm-objdump
[27/484] LINK obj/clang/unittests/Lex/LexTests
[28/484] LINK obj/clang/unittests/Format/FormatTests
[29/484] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[30/484] LINK ./bin/llvm-xray
[31/484] LINK ./bin/llvm-ar
[32/484] LINK obj/clang/unittests/Support/ClangSupportTests
[33/484] LINK ./bin/llvm-rtdyld
[34/484] LINK ./bin/llvm-bolt
[35/484] LINK ./bin/llvm-bolt-heatmap
[36/484] LINK obj/llvm/unittests/ExecutionEngine/Orc/OrcJITTests
[37/484] LINK obj/llvm/unittests/ExecutionEngine/MCJIT/MCJITTests
[38/484] LINK obj/bolt/unittests/Passes/PassTests
[39/484] LINK ./bin/llvm-exegesis
[40/484] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[41/484] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[42/484] LINK obj/bolt/unittests/Core/CoreTests
[43/484] LINK obj/llvm/unittests/MI/MITests
[44/484] LINK ./bin/llvm-ir2vec
[45/484] LINK ./bin/llvm-opt-fuzzer
[46/484] LINK ./bin/lli
[47/484] LINK ./bin/clang-linker-wrapper
[48/484] LINK ./bin/llvm-jitlink
[49/484] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[50/484] LINK ./bin/clang-sycl-linker
[51/484] LINK ./bin/llvm-dwarfutil
[52/484] LINK ./bin/llvm-isel-fuzzer
[53/484] LINK ./bin/llvm-split
[54/484] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[55/484] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[56/484] LINK ./bin/llvm-gsymutil
[57/484] LINK ./bin/lld
[58/484] LINK ./bin/opt
[59/484] LINK obj/llvm/unittests/MIR/MIRTests
[60/484] LINK ./bin/dsymutil
[61/484] LINK ./bin/clang-nvlink-wrapper
[62/484] LINK ./bin/llc
[63/484] SOLINK ./lib/libLTO.so
[64/484] LINK ./bin/llvm-dwp
[65/484] LINK ./bin/llvm-lto2
[66/484] LINK ./bin/llvm-reduce
[67/484] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[68/484] LINK ./bin/llvm-lto
[69/484] LINK ./bin/llvm-c-test
[70/484] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[71/484] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.