On Sat, Dec 23, 2017 at 5:46 PM, Xuehan Xu <xxhdx1985126@xxxxxxxxx> wrote: > Hi, everyone. > > I'm using CentOS 7 with devtoolset-7 to build ceph. However, I found > that the list::size() in my ceph executables is still counting the > number of nodes. It's so odd, I googled it, and found that this may > have something to do with _GLIBCXX_USE_CXX11_ABI. But even if I > explicitly set _GLIBCXX_USE_CXX11_ABI to 1 when building ceph, the > problem remains. It seems that _GLIBCXX_USE_CXX11_ABI is set to 0 by > gcc no matter how I build the source code, even with > -D_GLIBCXX_USE_CXX11_ABI=1. Xuehan, thanks for testing! turns out the gcc-7 in devtoolset is compiled with "--with-default-libstdcxx-abi=gcc4-compatible", see the output of "g++ -v", so it is using "_GLIBCXX_USE_CXX11_ABI=0", you can by checking /opt/rh/devtoolset-7/root/usr/include/c++/7/x86_64-redhat-linux/bits/c++config.h . in other words, we still need https://github.com/ceph/ceph/pull/18755. > > > Does anyone have any clue? Thanks:-) > -- Regards Kefu Chai -- 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
