ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/382] AR lib/libLLVMRISCVDesc.a
[2/382] AR lib/libLLVMRISCVAsmParser.a
[3/382] AR lib/libLLVMRISCVDisassembler.a
[4/382] AR lib/libLLVMTargetRISCVMCA.a
[5/382] AR lib/libLLVMExegesisRISCV.a
[6/382] AR lib/libLLVMRISCVCodeGen.a
[7/382] AR lib/libclangTidyMiscModule.a
[8/382] 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'
[9/382] LINK ./bin/llvm-dwarfdump
[10/382] LINK ./bin/llvm-cfi-verify
[11/382] LINK ./bin/llvm-nm
[12/382] LINK ./bin/sancov
[13/382] LINK ./bin/llvm-mca
[14/382] LINK ./bin/llvm-objdump
[15/382] LINK obj/clang/unittests/DependencyScanning/ClangDependencyScanningTests
[16/382] LINK obj/llvm/unittests/tools/llvm-cfi-verify/CFIVerifyTests
[17/382] LINK ./bin/llvm-mc
[18/382] LINK ./bin/llvm-ml
[19/382] LINK obj/llvm/unittests/tools/llvm-exegesis/LLVMExegesisTests
[20/382] LINK ./bin/llvm-debuginfo-analyzer
[21/382] LINK obj/llvm/unittests/tools/llvm-exegesis/PowerPC/LLVMExegesisPowerPCTests
[22/382] LINK ./bin/llvm-profgen
[23/382] LINK obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests
[24/382] LINK obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests
[25/382] LINK obj/llvm/unittests/tools/llvm-exegesis/X86/LLVMExegesisX86Tests
[26/382] LINK ./bin/llvm-jitlink
[27/382] LINK obj/clang-tools-extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[28/382] LINK obj/clang-tools-extra/unittests/clang-include-fixer/ClangIncludeFixerTests
[29/382] LINK ./bin/llvm-libtool-darwin
[30/382] LINK obj/bolt/unittests/Passes/PassTests
[31/382] LINK ./bin/clang-query
[32/382] LINK obj/clang/unittests/ASTMatchers/Dynamic/DynamicASTMatchersTests
[33/382] LINK obj/bolt/unittests/Core/CoreTests
[34/382] LINK ./bin/llvm-bolt-heatmap
[35/382] LINK ./bin/clang-doc
[36/382] LINK ./bin/clang-include-fixer
[37/382] LINK ./bin/modularize
[38/382] LINK obj/clang/unittests/Sema/SemaTests
[39/382] LINK ./bin/clang-move
[40/382] LINK obj/clang-tools-extra/unittests/clang-move/ClangMoveTests
[41/382] LINK ./bin/clang-reorder-fields
[42/382] LINK ./bin/pp-trace
[43/382] LINK obj/clang-tools-extra/unittests/clang-query/ClangQueryTests
[44/382] LINK obj/clang/unittests/ASTMatchers/ASTMatchersTests
[45/382] LINK ./bin/clang-extdef-mapping
[46/382] LINK ./bin/find-all-symbols
[47/382] LINK ./bin/clang-diff
[48/382] LINK ./bin/llvm-lto2
[49/382] LINK obj/clang/unittests/CrossTU/CrossTUTests
[50/382] LINK ./bin/llvm-bolt
[51/382] LINK ./bin/llvm-lto
[52/382] LINK ./bin/clang-change-namespace
[53/382] LINK obj/clang-tools-extra/unittests/clang-include-fixer/find-all-symbols/FindAllSymbolsTests
[54/382] LINK ./bin/clang-scan-deps
[55/382] LINK obj/clang/unittests/AST/ByteCode/InterpTests
[56/382] LINK obj/clang/unittests/Analysis/ClangAnalysisTests
[57/382] LINK ./bin/clang-refactor
[58/382] LINK ./bin/clang-installapi
[59/382] LINK obj/clang-tools-extra/unittests/clang-doc/ClangDocTests
[60/382] LINK ./bin/llvm-isel-fuzzer
[61/382] LINK ./bin/clang-linker-wrapper
[62/382] LINK obj/clang/unittests/Analysis/FlowSensitive/ClangAnalysisFlowSensitiveTests
[63/382] LINK obj/clang/unittests/Analysis/Scalable/ClangScalableAnalysisTests
[64/382] LINK ./bin/clang-nvlink-wrapper
[65/382] LINK obj/clang/unittests/AST/ASTTests
[66/382] LINK ./bin/llvm-gsymutil
[67/382] LINK ./bin/clang-check
[68/382] LINK ./bin/clang-sycl-linker
[69/382] LINK obj/clang/unittests/Frontend/FrontendTests
[70/382] LINK ./bin/clang-tidy
[71/382] LINK ./bin/lldb
[72/382] SOLINK ./lib/libclang.so
[73/382] LINK ./bin/clang-repl
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.