On Wed, Jan 14, 2015 at 9:12 PM, Zhiwei Zhu <z_...@wargaming.net> wrote:
> Dear all, > > > > I am not sure whether this has been discussed before or whether it’s > appropriate to discuss this in this list. > > > > My question is about c++11 support for the projects on epel (probably more > specifically, epel7). Do we have any kind of general policy regarding > c++11 support? > > I am asking this because recently we encountered a problem related to > this. The case is that our project is built with option ‘-std=c++11’ while > the library used by our project on epel (specifically mongo-cxx-driver) was > not built with this option, and our process simply crashes during start. > > The root cause is the ABI built with c++11 option is actually not > compatible with that without it. Please refer to > https://gcc.gnu.org/wiki/Cxx11AbiCompatibility. > > > > So the ‘-std=c++11’ draws a clear line between binaries/libraries, all of > them must be built either with it or without it(C code is probably fine). > You cannot mix them togother, otherwise there might be risks. > > > > Is there any general policy regarding this c++11 support? Or just > maintainers make the decision for specific project? > > > > If the question is not approriate to discuss in this list, please ignore > it. Or if anyone has any idea about where I can find relevant information, > could you please share with me? > devtoolset seems to be the right solution for C++11 support because it offers better ABI compatibility ( see section 2.2.2 at https://access.redhat.com/documentation/en-US/Red_Hat_Developer_Toolset/3/html/3.0_Release_Notes/DTS3.0_Release.html#Features ). However, having said that, I previously brought up the idea of making the devtoolset available for use in the EPEL ( https://lists.fedoraproject.org/pipermail/epel-devel/2013-September/008737.html ) but the conversation never really picked up any traction. I would definitely love to see devtoolset be made available for use when building packages in the EPEL but I'm just not sure how to get that ball rolling. Dave
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