ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/8834] COPY ../../libcxxabi/include/__cxxabi_config.h include/c++/v1/__cxxabi_config.h
[2/8834] COPY ../../libcxxabi/include/cxxabi.h include/c++/v1/cxxabi.h
[3/8834] CXX obj/clang-tools-extra/clang-doc/markdown/markdown.Markdown.o
FAILED: obj/clang-tools-extra/clang-doc/markdown/markdown.Markdown.o 
../../../chrome/src/third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/clang-tools-extra/clang-doc/markdown/markdown.Markdown.o.d -o obj/clang-tools-extra/clang-doc/markdown/markdown.Markdown.o -c ../../clang-tools-extra/clang-doc/markdown/Markdown.cpp  -I../../llvm/include -Igen/llvm/include -I../../clang/include -Igen/clang/include -O3 -fdiagnostics-color -Wall -Wextra -Wno-unused-parameter -Wdelete-non-virtual-dtor -Wstring-conversion -no-canonical-prefixes -Werror=date-time -fdebug-compilation-dir=. --sysroot=../../sysroot -Wpoison-system-directories -fPIC -Wcovered-switch-default -fno-strict-aliasing -std=c++17 -fvisibility-inlines-hidden -fno-exceptions -fno-rtti
clang++: error: no such file or directory: '../../clang-tools-extra/clang-doc/markdown/Markdown.cpp'
clang++: error: no input files
[4/8834] AR lib/libLLVMSupport.a
[5/8834] ACTION //libcxx/include:copy_headers(//llvm/utils/gn/build/toolchain:unix)
[6/8834] CXX obj/llvm/utils/not/not.not.o
[7/8834] CXX obj/llvm/utils/yaml-bench/yaml-bench.YAMLBench.o
[8/8834] CXX obj/llvm/utils/split-file/split-file.split-file.o
[9/8834] CXX obj/third-party/unittest/UnitTestMain/UnitTestMain.TestMain.o
[10/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.RuntimeLibcalls.o
[11/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.ARMTargetDefEmitter.o
[12/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.RISCVTargetDefEmitter.o
[13/8834] CXX obj/third-party/unittest/googlemock/src/gtest.gmock-all.o
[14/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.CodeGenIntrinsics.o
[15/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.DirectiveEmitter.o
[16/8834] CXX obj/llvm/utils/TableGen/Basic/Basic.IntrinsicEmitter.o
[17/8834] CXX obj/third-party/unittest/googletest/src/gtest.gtest-all.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.