ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/435] AR lib/libLLVMCodeGen.a
[2/435] LINK ./bin/llvm-bat-dump
[3/435] LINK obj/bolt/unittests/Profile/ProfileTests
[4/435] CXX obj/clang/lib/Basic/Basic.Attributes.o
FAILED: obj/clang/lib/Basic/Basic.Attributes.o 
../../chromeclang/bin/clang++ -MMD -MF obj/clang/lib/Basic/Basic.Attributes.o.d -o obj/clang/lib/Basic/Basic.Attributes.o -c ../../clang/lib/Basic/Attributes.cpp  -I../../clang/lib/Basic -I../../llvm/include -Igen/llvm/include -I../../clang/include -Igen/clang/include -Igen/clang/include/clang/Basic -Igen/llvm/include/llvm/Frontend/OpenMP -Igen/clang/lib/Basic -Igen/clang/include/clang/Sema -arch arm64 -isysroot ../../sysroot/MacOSX.sdk -mmacos-version-min=12 -mmacos-version-min=12 -O3 -fdiagnostics-color -Wall -Wextra -Wno-unused-parameter -Wdelete-non-virtual-dtor -Wstring-conversion -no-canonical-prefixes -Werror=date-time -isysroot ../../sysroot/MacOSX.sdk -Wpoison-system-directories -fPIC -Wcovered-switch-default -fno-strict-aliasing -std=c++17 -fvisibility-inlines-hidden -fno-exceptions -fno-rtti
../../clang/lib/Basic/Attributes.cpp:234:10: fatal error: 'clang/Basic/AttributeSpellingList.inc' file not found
#include "clang/Basic/AttributeSpellingList.inc"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
[5/435] LINK ./bin/sancov
[6/435] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.MachineFloatingPointPredicateUtils.o
[7/435] CXX obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests.RegisterAliasingTest.o
[8/435] CXX obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests.BenchmarkResultTest.o
[9/435] CXX obj/llvm/unittests/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerTests.VecUtilsTest.o
[10/435] CXX obj/llvm/unittests/tools/llvm-exegesis/LLVMExegesisTests.BenchmarkRunnerTest.o
[11/435] CXX obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests.TargetTest.o
[12/435] CXX obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests.TargetTest.o
[13/435] CXX obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests.SnippetGeneratorTest.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.