ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/424] AR lib/libLLVMScalarOpts.a
[2/424] AR lib/libclangTidyHICPPModule.a
[3/424] 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'
[4/424] LINK obj/clang/unittests/InstallAPI/InstallAPITests
[5/424] LINK obj/clang-tools-extra/unittests/clang-apply-replacements/ClangApplyReplacementsTests
[6/424] LINK ./bin/clang-apply-replacements
[7/424] LINK ./bin/clang-offload-bundler
[8/424] LINK ./bin/llvm-mca
[9/424] LINK ./bin/llvm-link
[10/424] LINK obj/clang/unittests/Format/FormatTests
[11/424] LINK ./bin/llvm-bat-dump
[12/424] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[13/424] LINK ./bin/llvm-mc
[14/424] LINK ./bin/llvm-ml
[15/424] LINK obj/bolt/unittests/Profile/ProfileTests
[16/424] LINK ./bin/llvm-jitlink
[17/424] LINK ./bin/llvm-lipo
[18/424] LINK obj/clang/unittests/Parse/ParseTests
[19/424] LINK ./bin/llvm-bolt
[20/424] LINK ./bin/diagtool
[21/424] LINK obj/bolt/unittests/Passes/PassTests
[22/424] LINK obj/clang/unittests/Lex/LexTests
[23/424] LINK obj/clang/unittests/CrossTU/CrossTUTests
[24/424] LINK ./bin/clang-reorder-fields
[25/424] LINK ./bin/clang-extdef-mapping
[26/424] LINK obj/clang/unittests/Sema/SemaTests
[27/424] LINK ./bin/clang-diff
[28/424] LINK ./bin/clang-change-namespace
[29/424] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[30/424] LINK obj/bolt/unittests/Core/CoreTests
[31/424] LINK ./bin/pp-trace
[32/424] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[33/424] LINK ./bin/modularize
[34/424] LINK ./bin/clang-refactor
[35/424] LINK obj/clang-tools-extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[36/424] LINK obj/clang/unittests/Rewrite/RewriteTests
[37/424] LINK obj/clang/unittests/Index/IndexTests
[38/424] LINK obj/clang-tools-extra/unittests/clang-query/ClangQueryTests
[39/424] LINK ./bin/llvm-bolt-heatmap
[40/424] LINK ./bin/llvm-lto2
[41/424] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[42/424] LINK obj/clang-tools-extra/unittests/clang-include-fixer/find-all-symbols/FindAllSymbolsTests
[43/424] LINK ./bin/clang-include-fixer
[44/424] LINK ./bin/clang-move
[45/424] LINK ./bin/clang-sycl-linker
[46/424] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[47/424] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[48/424] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[49/424] LINK ./bin/llvm-ir2vec
[50/424] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[51/424] LINK ./bin/clang-query
[52/424] LINK obj/clang/unittests/Serialization/SerializationTests
[53/424] LINK ./bin/find-all-symbols
[54/424] LINK ./bin/clang-installapi
[55/424] LINK ./bin/clang-nvlink-wrapper
[56/424] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[57/424] LINK obj/clang-tools-extra/unittests/clang-tidy/ClangTidyTests
[58/424] LINK ./bin/clang-linker-wrapper
[59/424] LINK ./bin/llvm-isel-fuzzer
[60/424] LINK obj/clang/unittests/AST/ASTTests
[61/424] LINK ./bin/clang-doc
[62/424] LINK obj/clang/unittests/ASTMatchers/Dynamic/DynamicASTMatchersTests
[63/424] LINK ./bin/llvm-lto
[64/424] LINK ./bin/clang-tidy
[65/424] LINK obj/clang/unittests/Driver/ClangDriverTests
[66/424] SOLINK ./lib/libclang.so
[67/424] LINK ./bin/clang-check
[68/424] CXX obj/clang/lib/CodeGen/TargetBuiltins/CodeGen.ARM.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.