ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/988] 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.
[2/988] CXX obj/clang/tools/clang-refactor/clang-refactor.TestSupport.o
[3/988] CXX obj/clang/unittests/Tooling/Syntax/SyntaxTests.MutationsTest.o
[4/988] CXX obj/clang/tools/clang-refactor/clang-refactor.ClangRefactor.o
[5/988] CXX obj/clang/unittests/Tooling/Syntax/SyntaxTests.TreeTest.o
[6/988] CXX obj/clang/tools/clang-nvlink-wrapper/clang-nvlink-wrapper.ClangNVLinkWrapper.o
[7/988] CXX obj/clang/tools/clang-installapi/clang-installapi.ClangInstallAPI.o
[8/988] CXX obj/clang/unittests/Tooling/Syntax/SyntaxTests.BuildTreeTest.o
[9/988] CXX obj/clang/tools/clang-linker-wrapper/clang-linker-wrapper.ClangLinkerWrapper.o
[10/988] CXX obj/clang/unittests/Tooling/Syntax/SyntaxTests.TokensTest.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.