ninja: Entering directory `out/gn'
[1/4] COPY ../../libcxx/include/variant include/c++/v1/variant
[2/4] COPY ../../libcxx/include/__memory/uses_allocator_construction.h include/c++/v1/__memory/uses_allocator_construction.h
[3/4] STAMP obj/libcxx/include/copy_headers.stamp
[4/4] STAMP obj/clang/tools/driver/clang.inputdeps.stamp