ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/290] 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'
[2/290] CXX obj/lld/ELF/ELF.ScriptLexer.o
[3/290] CXX obj/lld/ELF/Arch/ELF.MSP430.o
[4/290] CXX obj/lld/ELF/Arch/ELF.MipsArchTree.o
[5/290] CXX obj/lld/ELF/ELF.DriverUtils.o
[6/290] CXX obj/lld/ELF/ELF.SymbolTable.o
[7/290] CXX obj/lld/ELF/Arch/ELF.AVR.o
[8/290] CXX obj/lld/ELF/ELF.EhFrame.o
[9/290] CXX obj/lld/ELF/ELF.DWARF.o
[10/290] CXX obj/lld/ELF/Arch/ELF.AMDGPU.o
[11/290] CXX obj/lld/ELF/ELF.CallGraphSort.o
[12/290] CXX obj/lld/ELF/ELF.ARMErrataFix.o
[13/290] CXX obj/lld/ELF/ELF.AArch64ErrataFix.o
[14/290] CXX obj/lld/ELF/Arch/ELF.SPARCV9.o
[15/290] CXX obj/lld/ELF/Arch/ELF.Mips.o
[16/290] CXX obj/lld/ELF/ELF.Target.o
[17/290] CXX obj/lld/ELF/Arch/ELF.SystemZ.o
[18/290] CXX obj/lld/ELF/Arch/ELF.X86.o
[19/290] CXX obj/lld/ELF/ELF.Symbols.o
[20/290] CXX obj/lld/ELF/ELF.Thunks.o
[21/290] CXX obj/lld/ELF/Arch/ELF.PPC.o
[22/290] CXX obj/lld/ELF/Arch/ELF.LoongArch.o
[23/290] CXX obj/lld/ELF/Arch/ELF.Hexagon.o
[24/290] CXX obj/lld/ELF/Arch/ELF.PPC64.o
[25/290] CXX obj/lld/ELF/Arch/ELF.X86_64.o
[26/290] CXX obj/lld/ELF/ELF.MapFile.o
[27/290] CXX obj/lld/ELF/ELF.OutputSections.o
[28/290] CXX obj/lld/ELF/Arch/ELF.AArch64.o
[29/290] CXX obj/lld/ELF/ELF.ScriptParser.o
[30/290] CXX obj/lld/ELF/Arch/ELF.ARM.o
[31/290] CXX obj/lld/ELF/ELF.ICF.o
[32/290] CXX obj/lld/ELF/Arch/ELF.RISCV.o
[33/290] CXX obj/lld/ELF/ELF.LinkerScript.o
[34/290] CXX obj/lld/ELF/ELF.MarkLive.o
[35/290] CXX obj/lld/ELF/ELF.BPSectionOrderer.o
[36/290] CXX obj/lld/ELF/ELF.InputSection.o
[37/290] CXX obj/lld/ELF/ELF.Relocations.o
[38/290] CXX obj/lld/ELF/ELF.LTO.o
[39/290] CXX obj/lld/ELF/ELF.Writer.o
[40/290] CXX obj/lld/ELF/ELF.InputFiles.o
[41/290] CXX obj/lld/ELF/ELF.Driver.o
[42/290] CXX obj/lld/ELF/ELF.SyntheticSections.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.