ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/4] COPY ../../libcxx/include/__atomic/support.h include/c++/v1/__atomic/support.h
[2/4] COPY ../../libcxx/include/__atomic/atomic.h include/c++/v1/__atomic/atomic.h
[3/4] STAMP obj/libcxx/include/copy_headers.stamp
[4/4] STAMP obj/clang/tools/driver/clang.inputdeps.stamp