ninja: Entering directory `out/gn'
[1/325] AR lib/libclangSema.a
[2/325] AR lib/libclangSerialization.a
[3/325] ACTION //lld/tools/lld:ld.lld(//llvm/utils/gn/build/toolchain:unix)
[4/325] ACTION //lld/tools/lld:wasm-ld(//llvm/utils/gn/build/toolchain:unix)
[5/325] ACTION //lld/tools/lld:ld64.lld(//llvm/utils/gn/build/toolchain:unix)
[6/325] ACTION //lld/tools/lld:lld-link(//llvm/utils/gn/build/toolchain:unix)
[7/325] ACTION //llvm/tools/llvm-ar:llvm-dlltool(//llvm/utils/gn/build/toolchain:unix)
[8/325] ACTION //llvm/tools/llvm-ar:llvm-lib(//llvm/utils/gn/build/toolchain:unix)
[9/325] ACTION //llvm/tools/llvm-ar:llvm-ranlib(//llvm/utils/gn/build/toolchain:unix)
[10/325] ACTION //llvm/tools/llvm-objdump:llvm-otool(//llvm/utils/gn/build/toolchain:unix)
[11/325] 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'
[12/325] LINK ./bin/clang-offload-bundler
[13/325] LINK obj/clang-tools-extra/unittests/clang-apply-replacements/ClangApplyReplacementsTests
[14/325] LINK ./bin/clang-apply-replacements
[15/325] LINK obj/clang/unittests/Format/FormatTests
[16/325] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[17/325] LINK obj/clang/unittests/Lex/LexTests
[18/325] LINK obj/clang/unittests/Parse/ParseTests
[19/325] LINK obj/clang/unittests/Support/ClangSupportTests
[20/325] LINK ./bin/pp-trace
[21/325] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[22/325] LINK obj/clang/unittests/Sema/SemaTests
[23/325] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[24/325] LINK ./bin/diagtool
[25/325] LINK obj/clang-tools-extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[26/325] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[27/325] LINK ./bin/find-all-symbols
[28/325] LINK obj/clang/unittests/Serialization/SerializationTests
[29/325] LINK ./bin/clang-change-namespace
[30/325] LINK obj/clang-tools-extra/unittests/clang-query/ClangQueryTests
[31/325] LINK obj/clang/unittests/Index/IndexTests
[32/325] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[33/325] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[34/325] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[35/325] LINK ./bin/clang-reorder-fields
[36/325] LINK ./bin/modularize
[37/325] LINK obj/clang-tools-extra/unittests/clang-include-fixer/find-all-symbols/FindAllSymbolsTests
[38/325] LINK ./bin/clang-include-fixer
[39/325] LINK ./bin/clang-query
[40/325] LINK ./bin/clang-extdef-mapping
[41/325] LINK obj/clang/unittests/Rewrite/RewriteTests
[42/325] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[43/325] LINK ./bin/clang-installapi
[44/325] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[45/325] LINK ./bin/clang-scan-deps
[46/325] LINK obj/clang/unittests/CrossTU/CrossTUTests
[47/325] LINK ./bin/clang-diff
[48/325] LINK ./bin/clang-refactor
[49/325] LINK ./bin/clang-move
[50/325] LINK obj/clang-tools-extra/unittests/clang-tidy/ClangTidyTests
[51/325] LINK obj/clang/unittests/AST/ASTTests
[52/325] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[53/325] LINK ./bin/clang-doc
[54/325] LINK obj/clang/unittests/ASTMatchers/Dynamic/DynamicASTMatchersTests
[55/325] LINK ./bin/clang-import-test
[56/325] LINK obj/clang/unittests/StaticAnalyzer/StaticAnalysisTests
[57/325] LINK obj/clang/unittests/CodeGen/ClangCodeGenTests
[58/325] LINK ./bin/dexp
[59/325] LINK ./bin/clangd-indexer
[60/325] LINK obj/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[61/325] LINK ./bin/clang-tidy
[62/325] LINK ./bin/clangd
[63/325] LINK obj/clang/unittests/Frontend/FrontendTests
[64/325] LINK ./bin/clang-check
[65/325] LINK obj/clang-tools-extra/clangd/unittests/ClangdTests
[66/325] SOLINK ./lib/libclang.so
[67/325] LINK obj/clang/unittests/Driver/ClangDriverTests
[68/325] LINK ./bin/clang-repl
[69/325] LINK obj/clang/unittests/Tooling/ToolingTests
[70/325] LINK obj/clang/unittests/Interpreter/ClangReplInterpreterTests
[71/325] CXX obj/lldb/source/Plugins/ObjectFile/ELF/ELF.ObjectFileELF.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.