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