On Thu, 28 Apr 2016, Robin H. Johnson wrote: > On Thu, Apr 28, 2016 at 06:47:55PM -0400, Sage Weil wrote: > > Hi all, > > > > We'd really like to use the latest boost, mainly so that we can use > > small_vector in a zillion places and avoid extra memory allocations. The > > distros, as always, are behind. > > From a distribution perspective, LESS static building is better, so this > proposal is a concern, but I do realize that the Gentoo/ArchLinux/CoreOS > perspective is very different than the Ubuntu LTS perspective. > > What's the state of having a more-up-to-date Boost in things like Ubuntu > backports, so that you don't have the overhead of having to maintain > your own boost packages or statically link? > > If support for statically linking a newer Boost is brought it, please, > please keep dynamic boost builds as fully supported, for distributions > that can keep up to date. As a bonus, at some point in the future, when > the slower distributions catch up, you might be able to escape the > static again. Yeah, having the option to either build statically or dynamically against an up-to-date distro is probably the right carrot/stick combination to incentivize the distros to move to a newer boost. Being able to conditionally not use the new stuff (e.g., typedef small_vector<> back to vector<>) may or may not work well, depending on which new thing we're trying to use. FWIW, we made the static -> dynamic transition with leveldb because the distros complained and it was nothing but sadness--so so many hours wasted chasing bugs in ancient distro versions of leveldb, and a huge matrix of version possibilities that made it difficult to reproduce user issues. I can't tell if there was ever an instance where it actually gained us anything (e.g., security update in leveldb), but I kind of doubt it. sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
