ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/327] ACTION //bolt/tools/driver:llvm-boltdiff(//llvm/utils/gn/build/toolchain:unix)
[2/327] ACTION //bolt/tools/driver:perf2bolt(//llvm/utils/gn/build/toolchain:unix)
[3/327] ACTION //llvm/tools/llvm-ml:llvm-ml64(//llvm/utils/gn/build/toolchain:unix)
[4/327] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[5/327] LINK ./bin/llvm-cxxmap
[6/327] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[7/327] LINK ./bin/llvm-cxxdump
[8/327] LINK ./bin/llvm-lipo
[9/327] LINK ./bin/llvm-xray
[10/327] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[11/327] LINK ./bin/llvm-ar
[12/327] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[13/327] ACTION //llvm/tools/llvm-ar:llvm-ranlib(//llvm/utils/gn/build/toolchain:unix)
[14/327] ACTION //llvm/tools/llvm-ar:llvm-lib(//llvm/utils/gn/build/toolchain:unix)
[15/327] LINK ./bin/llvm-rtdyld
[16/327] ACTION //llvm/tools/llvm-ar:llvm-dlltool(//llvm/utils/gn/build/toolchain:unix)
[17/327] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[18/327] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[19/327] LINK obj/clang/unittests/CrossTU/CrossTUTests
[20/327] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[21/327] 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'
[22/327] LINK ./bin/llvm-exegesis
[23/327] LINK obj/clang/unittests/Index/IndexTests
[24/327] LINK obj/llvm/unittests/MC/MCTests
[25/327] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[26/327] LINK obj/clang/unittests/Sema/SemaTests
[27/327] LINK ./bin/clang-diff
[28/327] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[29/327] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[30/327] LINK obj/clang/unittests/Rewrite/RewriteTests
[31/327] LINK ./bin/clang-scan-deps
[32/327] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[33/327] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[34/327] LINK ./bin/clang-installapi
[35/327] LINK ./bin/clang-sycl-linker
[36/327] LINK ./bin/clang-linker-wrapper
[37/327] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[38/327] LINK obj/clang/unittests/AST/ASTTests
[39/327] LINK obj/clang-tools-extra/unittests/clang-tidy/ClangTidyTests
[40/327] LINK ./bin/llc
[41/327] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[42/327] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[43/327] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[44/327] LINK ./bin/llvm-opt-fuzzer
[45/327] LINK ./bin/llvm-gsymutil
[46/327] LINK ./bin/dsymutil
[47/327] LINK ./bin/llvm-c-test
[48/327] LINK ./bin/llvm-lto
[49/327] LINK obj/clang/unittests/Serialization/SerializationTests
[50/327] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[51/327] LINK obj/clang/unittests/StaticAnalyzer/StaticAnalysisTests
[52/327] LINK ./bin/llvm-dwarfutil
[53/327] LINK obj/clang/unittests/Driver/ClangDriverTests
[54/327] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[55/327] LINK ./bin/clang-refactor
[56/327] LINK obj/llvm/unittests/MI/MITests
[57/327] SOLINK ./lib/libclang.so
[58/327] SOLINK ./lib/libLTO.so
[59/327] LINK ./bin/llvm-dwp
[60/327] LINK ./bin/opt
[61/327] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[62/327] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[63/327] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[64/327] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[65/327] LINK obj/clang/unittests/Frontend/FrontendTests
[66/327] LINK ./bin/llvm-reduce
[67/327] LINK ./bin/lld
[68/327] LINK obj/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[69/327] LINK ./bin/lldb-test
[70/327] LINK obj/llvm/unittests/Target/TargetMachineCTests
[71/327] LINK obj/llvm/unittests/MIR/MIRTests
[72/327] LINK ./bin/lldb-dap
[73/327] LINK obj/clang/unittests/Interpreter/ClangReplInterpreterTests
[74/327] LINK ./bin/clang-repl
[75/327] LINK obj/clang/unittests/Tooling/ToolingTests
[76/327] LINK ./bin/lldb
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.