ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/437] AR lib/libclangToolingDependencyScanning.a
[2/437] AR lib/libclangFrontendTool.a
[3/437] AR lib/liblldCOFF.a
[4/437] AR lib/liblldELF.a
[5/437] AR lib/liblldMachO.a
[6/437] AR lib/liblldbPluginDisassemblerLLVMC.a
[7/437] AR lib/liblldbPluginExpressionParserClang.a
[8/437] AR lib/libLLVMOrcDebugging.a
[9/437] AR lib/libLLVMExegesis.a
[10/437] AR lib/libLLVMOptDriver.a
[11/437] AR lib/libclangTooling.a
[12/437] AR lib/liblldMinGW.a
[13/437] AR lib/liblldbPluginAppleObjCRuntime.a
[14/437] AR lib/libclangInterpreter.a
[15/437] AR lib/libclangDoc.a
[16/437] 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'
[17/437] LINK ./bin/lli-child-target
[18/437] LINK ./bin/llvm-cxxmap
[19/437] LINK obj/llvm/unittests/ExecutionEngine/ExecutionEngineTests
[20/437] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[21/437] LINK ./bin/llvm-xray
[22/437] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[23/437] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[24/437] LINK ./bin/llvm-cxxdump
[25/437] LINK ./bin/llvm-lipo
[26/437] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[27/437] LINK ./bin/llvm-ml
[28/437] LINK ./bin/llvm-mc
[29/437] LINK obj/llvm/unittests/MC/MCTests
[30/437] LINK ./bin/llvm-ar
[31/437] LINK obj/llvm/unittests/tools/llvm-exegesis/LLVMExegesisTests
[32/437] LINK ./bin/llvm-libtool-darwin
[33/437] LINK ./bin/llvm-rtdyld
[34/437] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[35/437] LINK obj/llvm/unittests/tools/llvm-exegesis/PowerPC/LLVMExegesisPowerPCTests
[36/437] LINK obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests
[37/437] LINK ./bin/lli
[38/437] LINK ./bin/llvm-bolt-heatmap
[39/437] LINK obj/llvm/unittests/Target/AMDGPU/AMDGPUTests
[40/437] LINK ./bin/llvm-jitlink
[41/437] LINK ./bin/llvm-ir2vec
[42/437] LINK obj/bolt/unittests/Passes/PassTests
[43/437] LINK obj/llvm/unittests/MC/AMDGPU/AMDGPUMCTests
[44/437] LINK obj/bolt/unittests/Core/CoreTests
[45/437] LINK obj/llvm/unittests/ExecutionEngine/Orc/OrcJITTests
[46/437] LINK ./bin/llvm-bolt
[47/437] LINK ./bin/llc
[48/437] LINK ./bin/llvm-dwarfutil
[49/437] LINK ./bin/clang-doc
[50/437] LINK obj/llvm/unittests/Target/TargetMachineCTests
[51/437] LINK obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests
[52/437] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[53/437] LINK obj/llvm/unittests/Target/AArch64/AArch64Tests
[54/437] LINK ./bin/llvm-gsymutil
[55/437] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[56/437] LINK ./bin/dsymutil
[57/437] LINK ./bin/clang-linker-wrapper
[58/437] LINK ./bin/llvm-lto2
[59/437] LINK ./bin/clang-nvlink-wrapper
[60/437] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[61/437] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[62/437] LINK obj/clang/unittests/Sema/SemaTests
[63/437] LINK obj/clang/unittests/CodeGen/ClangCodeGenTests
[64/437] LINK ./bin/clang-import-test
[65/437] LINK ./bin/llvm-opt-fuzzer
[66/437] LINK ./bin/llvm-dwp
[67/437] LINK ./bin/clang-sycl-linker
[68/437] LINK ./bin/llvm-c-test
[69/437] LINK ./bin/clang-query
[70/437] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[71/437] LINK ./bin/llvm-lto
[72/437] LINK ./bin/llvm-exegesis
[73/437] LINK ./bin/llvm-reduce
[74/437] LINK ./bin/llvm-isel-fuzzer
[75/437] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[76/437] LINK ./bin/llvm-split
[77/437] LINK ./bin/opt
[78/437] LINK obj/llvm/unittests/MI/MITests
[79/437] LINK obj/llvm/unittests/MIR/MIRTests
[80/437] SOLINK ./lib/libLTO.so
[81/437] LINK obj/clang/unittests/Driver/ClangDriverTests
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.