INFO:2026-01-15T20:15:33Z:root:pulling... From github.com:llvm/llvm-project * branch main -> FETCH_HEAD aaea20692f8b..d03ce72f40ee main -> origin/main Switched to branch 'main' Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded. (use "git pull" to update your local branch) HEAD is now at d03ce72f40ee [IR] Propagate fast-math flags through autoupgraded target intrinsics (#174432) INFO:2026-01-15T20:15:36Z:root:syncing... Deleted branch merge (was aaea20692f8b). Switched to a new branch 'merge' branch 'merge' set up to track 'origin/main'. INFO:2026-01-15T20:15:36Z:root:building ninja: Entering directory `out/gn' [1/4943] ACTION //libcxx/include:write_config_site(//llvm/utils/gn/build/toolchain:unix) FAILED: include/c++/v1/__config_site python3 ../../llvm/utils/gn/build/write_cmake_config.py -o include/c++/v1/__config_site ../../libcxx/include/__config_site.in _LIBCPP_ABI_FORCE_ITANIUM= _LIBCPP_ABI_FORCE_MICROSOFT= _LIBCPP_ABI_VERSION=1 _LIBCPP_ASSERTION_SEMANTIC_DEFAULT=_LIBCPP_ASSERTION_SEMANTIC_HARDENING_DEPENDENT _LIBCPP_EXTRA_SITE_DEFINES= _LIBCPP_HAS_FILESYSTEM=1 _LIBCPP_HAS_THREADS=1 _LIBCPP_HAS_MONOTONIC_CLOCK=1 _LIBCPP_HAS_MUSL_LIBC= _LIBCPP_HAS_THREAD_API_PTHREAD= _LIBCPP_HAS_THREAD_API_EXTERNAL= _LIBCPP_HAS_THREAD_API_WIN32= _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS= _LIBCPP_HAS_VENDOR_AVAILABILITY_ANNOTATIONS= _LIBCPP_NO_VCRUNTIME= _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION= _LIBCPP_HAS_RANDOM_DEVICE=1 _LIBCPP_HAS_LOCALIZATION=1 _LIBCPP_HAS_UNICODE=1 _LIBCPP_HAS_WIDE_CHARACTERS=1 _LIBCPP_HAS_TERMINAL=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _LIBCPP_PSTL_BACKEND_LIBDISPATCH= _LIBCPP_PSTL_BACKEND_SERIAL= _LIBCPP_PSTL_BACKEND_STD_THREAD=1 _LIBCPP_ABI_NAMESPACE=__1 _LIBCPP_HAS_TIME_ZONE_DATABASE=1 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 sys.exit(main()) ~~~~^^ File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 75, in main if values[var] == "0": ~~~~~~^^^^^ KeyError: '_LIBCPP_LIBC_LLVM_LIBC' [2/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MSVCUndecoratedNameParser.o [3/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.CppModuleConfiguration.o [4/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangHost.o [5/4943] CXX obj/lldb/source/Plugins/ObjectContainer/BSD-Archive/BSD-Archive.ObjectContainerBSDArchive.o [6/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlAtomic.o [7/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.CFBasicHash.o [8/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.CoreMedia.o [9/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStl.o [10/4943] CXX obj/lldb/source/Plugins/Language/ObjCPlusPlus/ObjCPlusPlus.ObjCPlusPlusLanguage.o [11/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlUnordered.o [12/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxAtomic.o [13/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxRangesRefView.o [14/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxQueue.o [15/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlDeque.o [16/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlVariant.o [17/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/CPlusPlus/CPlusPlus.VerboseTrapFrameRecognizer.o [18/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibStdcppUniquePointer.o [19/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxTuple.o [20/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibStdcppTuple.o [21/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxProxyArray.o [22/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxValarray.o [23/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxSpan.o [24/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxSliceArray.o [25/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlTuple.o [26/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxVariant.o [27/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlSpan.o [28/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlTree.o [29/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlSmartPointer.o [30/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSString.o [31/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibStdcppSpan.o [32/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.MsvcStlVector.o [33/4943] CXX obj/lldb/source/Plugins/Language/ClangCommon/ClangCommon.ClangHighlighter.o [34/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxVector.o [35/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/CPlusPlus/CPlusPlus.CPPLanguageRuntime.o [36/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.IRDynamicChecks.o [37/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.AppleObjCClassDescriptorV2.o [38/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangUtil.o [39/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibStdcpp.o [40/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.AppleObjCRuntimeV1.o [41/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.Coroutines.o [42/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSIndexPath.o [43/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxMap.o [44/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.CF.o [45/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSError.o [46/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSException.o [47/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxxUnorderedMap.o [48/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.CxxStringTypes.o [49/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.AppleObjCDeclVendor.o [50/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.AppleObjCRuntime.o [51/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSArray.o [52/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.Cocoa.o [53/4943] CXX obj/lldb/source/Plugins/Language/CPlusPlus/CPlusPlus.LibCxx.o [54/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSSet.o [55/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABI.ItaniumABILanguageRuntime.o [56/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.NSDictionary.o [57/4943] CXX obj/lldb/source/Plugins/Language/ObjC/ObjC.ObjCLanguage.o [58/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.NameSearchContext.o [59/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangPersistentVariables.o [60/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.CxxModuleHandler.o [61/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangUtilityFunction.o [62/4943] CXX obj/lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.AppleObjCRuntimeV2.o [63/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangUserExpression.o [64/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.IRForTarget.o [65/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangFunctionCaller.o [66/4943] CXX obj/lldb/source/Plugins/ExpressionParser/Clang/Clang.ClangModulesDeclVendor.o ninja: build stopped: subcommand failed. Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.