On 29-09-14 17:24, Sage Weil wrote: > On Mon, 29 Sep 2014, Milosz Tanski wrote: >> A second more general Ceph question is somewhat off-topic. What about >> C++11 use in the Ceph code base (like in this case)? It's not >> explicitly prohibited by the coding style document, but I imagine the >> goal is to build on as many systems as possible and quite a few >> supported distros have pretty old versions of GCC. I'm asking this >> because I imagine some of the performance work that's about to happen >> will want to use things like lockless queues, and then you get into >> C++11 memory model and std::atomic... etc. > > We are all very eager to move to C++11. The challenge is that we still > need to build packages for the target distros. That doesn't necessarily > mean that the compilers on those distros need to support c++11 as long as > the runtime does... if we can make the build enviroment sane. > > I'm really curious what other projects do here... > At the CloudStack project we recently switched from Java 6 to Java 7 and we said that from version X we required Java 7 on the system. For Ceph, what keeps us from saying that version H (after Giant) requires a C++11 compliant compiler? That might rule out Ubuntu 12.04 and CentOS6/RHEL6, but does that really matter that much for something 'new' like Ceph? > 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 > -- Wido den Hollander 42on B.V. Phone: +31 (0)20 700 9902 Skype: contact42on -- 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
