ninja: Entering directory `out/gn'
[1/316] AR lib/libclangLex.a
[2/316] AR lib/libclangStaticAnalyzerCheckers.a
[3/316] 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'
[4/316] LINK ./bin/clang-format
[5/316] LINK obj/clang/unittests/InstallAPI/InstallAPITests
[6/316] LINK obj/clang/unittests/Basic/BasicTests
[7/316] LINK ./bin/clang-offload-bundler
[8/316] LINK ./bin/clang-apply-replacements
[9/316] LINK obj/clang-tools-extra/unittests/clang-apply-replacements/ClangApplyReplacementsTests
[10/316] LINK obj/clang/unittests/Format/FormatTests
[11/316] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[12/316] LINK obj/clang/unittests/Parse/ParseTests
[13/316] LINK obj/clang/unittests/Support/ClangSupportTests
[14/316] LINK obj/clang/unittests/Lex/LexTests
[15/316] LINK obj/clang-tools-extra/unittests/clang-query/ClangQueryTests
[16/316] LINK ./bin/clang-installapi
[17/316] LINK ./bin/clang-change-namespace
[18/316] LINK obj/clang/unittests/CrossTU/CrossTUTests
[19/316] LINK ./bin/diagtool
[20/316] LINK ./bin/modularize
[21/316] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[22/316] LINK ./bin/pp-trace
[23/316] LINK ./bin/clang-reorder-fields
[24/316] LINK ./bin/clang-move
[25/316] LINK obj/clang/unittests/ASTMatchers/Dynamic/DynamicASTMatchersTests
[26/316] LINK obj/clang-tools-extra/unittests/clang-tidy/ClangTidyTests
[27/316] LINK ./bin/clang-include-fixer
[28/316] LINK obj/clang/unittests/Index/IndexTests
[29/316] LINK ./bin/clang-query
[30/316] LINK obj/clang/unittests/Serialization/SerializationTests
[31/316] LINK ./bin/clang-refactor
[32/316] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[33/316] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[34/316] LINK ./bin/find-all-symbols
[35/316] LINK obj/clang/unittests/AST/ASTTests
[36/316] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[37/316] LINK obj/clang/unittests/Rewrite/RewriteTests
[38/316] LINK ./bin/clang-import-test
[39/316] LINK obj/clang-tools-extra/unittests/clang-include-fixer/find-all-symbols/FindAllSymbolsTests
[40/316] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[41/316] LINK obj/clang-tools-extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[42/316] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[43/316] LINK obj/clang/unittests/CodeGen/ClangCodeGenTests
[44/316] LINK obj/clang/unittests/Sema/SemaTests
[45/316] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[46/316] LINK ./bin/clang-scan-deps
[47/316] LINK ./bin/clang-diff
[48/316] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[49/316] LINK ./bin/clang-extdef-mapping
[50/316] LINK obj/clang/unittests/StaticAnalyzer/StaticAnalysisTests
[51/316] LINK ./bin/clang-doc
[52/316] LINK ./bin/lldb-server
[53/316] LINK ./bin/dexp
[54/316] LINK ./bin/clangd
[55/316] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[56/316] LINK obj/clang/unittests/Frontend/FrontendTests
[57/316] LINK ./bin/clang-tidy
[58/316] SOLINK ./lib/libclang.so
[59/316] LINK obj/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[60/316] LINK ./bin/clangd-indexer
[61/316] LINK obj/clang/unittests/Driver/ClangDriverTests
[62/316] LINK obj/clang/unittests/Interpreter/ClangReplInterpreterTests
[63/316] LINK obj/clang-tools-extra/clangd/unittests/ClangdTests
[64/316] LINK ./bin/lldb-dap
[65/316] LINK obj/clang/unittests/Tooling/ToolingTests
[66/316] LINK ./bin/lldb-test
[67/316] LINK ./bin/clang-check
[68/316] LINK ./bin/clang-repl
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.