ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/314] ACTION //bolt/tools/driver:perf2bolt(//llvm/utils/gn/build/toolchain:unix)
[2/314] ACTION //bolt/tools/driver:llvm-boltdiff(//llvm/utils/gn/build/toolchain:unix)
[3/314] ACTION //llvm/tools/llvm-ml:llvm-ml64(//llvm/utils/gn/build/toolchain:unix)
[4/314] LINK obj/clang/unittests/libclang/CrashTests/libclangCrashTests
[5/314] LINK obj/clang/unittests/libclang/libclangTests
[6/314] ACTION //llvm/tools/llvm-objdump:llvm-otool(//llvm/utils/gn/build/toolchain:unix)
[7/314] 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'
[8/314] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[9/314] LINK ./bin/llvm-cxxmap
[10/314] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[11/314] LINK ./bin/llvm-cxxdump
[12/314] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[13/314] LINK ./bin/llvm-ar
[14/314] LINK ./bin/llvm-xray
[15/314] LINK ./bin/llvm-rtdyld
[16/314] LINK obj/llvm/unittests/MC/MCTests
[17/314] LINK ./bin/llvm-mc
[18/314] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[19/314] LINK ./bin/c-index-test
[20/314] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[21/314] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[22/314] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[23/314] LINK ./bin/llvm-exegesis
[24/314] LINK obj/clang/unittests/Rewrite/RewriteTests
[25/314] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[26/314] LINK obj/clang/unittests/Index/IndexTests
[27/314] LINK ./bin/llvm-dwp
[28/314] LINK ./bin/llvm-lto
[29/314] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[30/314] LINK ./bin/llvm-opt-fuzzer
[31/314] LINK obj/clang/unittests/StaticAnalyzer/StaticAnalysisTests
[32/314] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[33/314] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[34/314] LINK obj/llvm/unittests/MIR/MIRTests
[35/314] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[36/314] LINK ./bin/opt
[37/314] LINK ./bin/llvm-reduce
[38/314] SOLINK ./lib/libLTO.so
[39/314] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[40/314] LINK ./bin/lld
[41/314] LINK ./bin/dsymutil
[42/314] LINK ./bin/llc
[43/314] LINK obj/llvm/unittests/Target/TargetMachineCTests
[44/314] LINK ./bin/llvm-c-test
[45/314] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[46/314] LINK obj/llvm/unittests/MI/MITests
[47/314] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[48/314] LINK obj/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[49/314] LINK obj/clang/unittests/Frontend/FrontendTests
[50/314] LINK obj/clang/unittests/Driver/ClangDriverTests
[51/314] LINK obj/clang/unittests/Tooling/ToolingTests
[52/314] LINK ./bin/clang
[53/314] LINK obj/clang/unittests/Interpreter/ClangReplInterpreterTests
[54/314] CXX obj/lldb/source/Plugins/Process/Utility/Utility.RegisterInfoPOSIX_arm64.o
[55/314] CXX obj/lldb/source/Plugins/Process/minidump/minidump.RegisterContextMinidump_ARM64.o
[56/314] CXX obj/lldb/source/Plugins/Process/Utility/Utility.RegisterContextDarwin_arm64.o
[57/314] CXX obj/lldb/source/Plugins/Platform/Linux/Linux.PlatformLinux.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.