ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/485] AR lib/libLLVMMCParser.a
[2/485] AR lib/libLLVMAnalysis.a
[3/485] 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'
[4/485] AR lib/libLLVMTransformUtils.a
[5/485] LINK ./bin/llvm-strings
[6/485] LINK ./bin/llvm-opt-report
[7/485] LINK ./bin/llvm-remarkutil
[8/485] LINK obj/llvm/unittests/DebugInfo/Symbolizer/DebugInfoSymbolizerTests
[9/485] LINK obj/llvm/unittests/InterfaceStub/InterfaceStubTests
[10/485] LINK obj/llvm/unittests/tools/llvm-profdata/LLVMProfdataTests
[11/485] LINK obj/llvm/unittests/XRay/XRayTests
[12/485] LINK ./bin/llvm-cvtres
[13/485] LINK ./bin/llvm-offload-binary
[14/485] LINK ./bin/llvm-debuginfod-find
[15/485] LINK ./bin/llvm-debuginfod
[16/485] LINK ./bin/llvm-readtapi
[17/485] LINK obj/llvm/unittests/Debuginfod/DebuginfodTests
[18/485] LINK ./bin/llvm-ifs
[19/485] LINK ./bin/yaml2obj
[20/485] LINK ./bin/llvm-symbolizer
[21/485] LINK ./bin/llvm-ctxprof-util
[22/485] LINK ./bin/llvm-rc
[23/485] LINK ./bin/sanstats
[24/485] LINK ./bin/llvm-stress
[25/485] LINK ./bin/llvm-objcopy
[26/485] LINK ./bin/llvm-pdbutil
[27/485] LINK ./bin/llvm-size
[28/485] LINK obj/llvm/unittests/ObjectYAML/ObjectYAMLTests
[29/485] LINK ./bin/llvm-sim
[30/485] LINK ./bin/llvm-readobj
[31/485] LINK ./bin/llvm-cov
[32/485] LINK obj/llvm/unittests/ObjCopy/ObjCopyTests
[33/485] LINK ./bin/obj2yaml
[34/485] LINK ./bin/llvm-profdata
[35/485] LINK obj/llvm/unittests/DebugInfo/PDB/DebugInfoPDBTests
[36/485] LINK obj/llvm/unittests/DebugInfo/BTF/DebugInfoBTFTests
[37/485] LINK ./bin/llubi
[38/485] LINK obj/llvm/unittests/Object/ObjectTests
[39/485] LINK obj/llvm/unittests/ProfileData/ProfileDataTests
[40/485] LINK ./bin/llvm-tli-checker
[41/485] LINK obj/llvm/unittests/SandboxIR/SandboxIRTests
[42/485] CXX obj/llvm/tools/llvm-dwarfdump/llvm-dwarfdump.Coverage.o
[43/485] CXX obj/llvm/lib/Target/RISCV/LLVMRISCVCodeGen.RISCVVLOptimizer.o
[44/485] CXX obj/llvm/lib/Target/X86/LLVMX86CodeGen.X86InstCombineIntrinsic.o
[45/485] CXX obj/clang-tools-extra/clang-tidy/misc/misc.ConfusableIdentifierCheck.o
[46/485] CXX obj/llvm/lib/Target/X86/LLVMX86CodeGen.X86ISelLowering.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.