ninja: Entering directory `out/gn'
[1/5] COPY ../../libcxx/include/__tree include/c++/v1/__tree
[2/5] COPY ../../libcxx/include/set include/c++/v1/set
[3/5] COPY ../../libcxx/include/map include/c++/v1/map
[4/5] CXX stage2_unix/obj/libcxx/src/experimental/cxx_experimental.time_zone.o
[5/5] AR lib/libc++experimental.a