ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/411] AR lib/libLLVMSelectionDAG.a
[2/411] 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'
[3/411] LINK ./bin/llvm-mca
[4/411] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[5/411] LINK ./bin/llvm-ml
[6/411] LINK ./bin/llvm-libtool-darwin
[7/411] LINK ./bin/llvm-bolt
[8/411] LINK ./bin/llvm-jitlink
[9/411] LINK obj/clang-tools-extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[10/411] LINK obj/bolt/unittests/Core/CoreTests
[11/411] LINK ./bin/llvm-bolt-heatmap
[12/411] LINK ./bin/find-all-symbols
[13/411] LINK ./bin/clang-installapi
[14/411] LINK ./bin/clang-move
[15/411] LINK obj/clang/unittests/Rewrite/RewriteTests
[16/411] LINK obj/bolt/unittests/Passes/PassTests
[17/411] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[18/411] LINK ./bin/clang-change-namespace
[19/411] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[20/411] LINK obj/clang/unittests/Index/IndexTests
[21/411] LINK ./bin/clang-extdef-mapping
[22/411] LINK ./bin/clang-include-fixer
[23/411] LINK ./bin/clang-scan-deps
[24/411] LINK ./bin/pp-trace
[25/411] LINK obj/clang-tools-extra/unittests/clang-query/ClangQueryTests
[26/411] LINK ./bin/clang-doc
[27/411] LINK obj/clang/unittests/CrossTU/CrossTUTests
[28/411] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[29/411] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[30/411] LINK ./bin/modularize
[31/411] LINK ./bin/clang-refactor
[32/411] LINK ./bin/dexp
[33/411] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[34/411] LINK obj/clang-tools-extra/unittests/clang-include-fixer/find-all-symbols/FindAllSymbolsTests
[35/411] LINK ./bin/clang-reorder-fields
[36/411] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[37/411] LINK ./bin/clang-query
[38/411] LINK obj/clang/unittests/Sema/SemaTests
[39/411] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[40/411] LINK ./bin/llvm-ir2vec
[41/411] LINK ./bin/clang-diff
[42/411] LINK obj/clang/unittests/Serialization/SerializationTests
[43/411] LINK obj/clang/unittests/AST/ASTTests
[44/411] LINK ./bin/llvm-lto2
[45/411] LINK ./bin/clang-nvlink-wrapper
[46/411] LINK obj/clang/unittests/ASTMatchers/Dynamic/DynamicASTMatchersTests
[47/411] LINK ./bin/clang-linker-wrapper
[48/411] LINK ./bin/llvm-lto
[49/411] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[50/411] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[51/411] LINK ./bin/clangd-indexer
[52/411] LINK ./bin/llvm-isel-fuzzer
[53/411] LINK obj/clang-tools-extra/unittests/clang-tidy/ClangTidyTests
[54/411] LINK obj/clang/unittests/Frontend/FrontendTests
[55/411] LINK obj/clang/unittests/StaticAnalyzer/StaticAnalysisTests
[56/411] LINK ./bin/clang-sycl-linker
[57/411] LINK obj/clang-tools-extra/clangd/unittests/ClangdTests
[58/411] LINK ./bin/clangd
[59/411] LINK ./bin/clang-tidy
[60/411] LINK obj/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[61/411] LINK obj/clang/unittests/Tooling/ToolingTests
[62/411] LINK obj/clang/unittests/Driver/ClangDriverTests
[63/411] LINK ./bin/clang-check
[64/411] SOLINK ./lib/libclang.so
[65/411] LINK ./bin/clang-repl
[66/411] LINK obj/clang/unittests/Interpreter/ClangReplInterpreterTests
[67/411] LINK ./bin/lldb
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.