On Thu, 23 Aug 2018, Noah Watkins wrote: > I managed to get Ceph built this afternoon using the > include-what-you-use tool that attempts to optimize #includes. > > The results are in the gist below. There is a lot of noise... > > https://gist.github.com/noahdesu/92e36c85658d29d4a45542e86127915f > > ... but sifting through, there seems to be some good stuff. Here is an > example where it notices that only a forward declaration is needed for > bufferlist: > > /home/nwatkins/src/ceph-iwyu/src/common/DecayCounter.h should add these lines: > #include <string> // for operator<< > #include "include/buffer_fwd.h" // for bufferlist > namespace ceph { class Formatter; } > > /home/nwatkins/src/ceph-iwyu/src/common/DecayCounter.h should remove > these lines: > - #include "common/Formatter.h" // lines 19-19 > - #include "include/buffer.h" // lines 18-18 > > Is that output from running on the whole tree, or just a few source files? I would have expected more proposed changes. sage