On Fri, Sep 15, 2017 at 2:44 PM, Noah Watkins <noahwatkins@xxxxxxxxx> wrote: > Thanks a lot Brad. I'm going to give this a shot. Let me know if you find any issues and we'll try and work through them as time permits. > > I started down a rabbit hole when I noticed that the rados client in > the default repositories in fedora 23 was too old to talk to luminous. > So in our CI we just installed Luminous everywhere out of simplicity. > Then we started hitting issues like this ABI stuff. Turns out the > clients in the default repositories in fc 24+ work just fine, so > dropping fc23 support was reasonable since it was mostly to support > development environments. Yeah, F23 has gone the way of the dodo ;) I'd have to be *extremely* motivated to try building luminous on it. > > On Thu, Sep 14, 2017 at 9:14 PM, Brad Hubbard <bhubbard@xxxxxxxxxx> wrote: >> On Fri, Sep 15, 2017 at 7:40 AM, Noah Watkins <noahwatkins@xxxxxxxxx> wrote: >>> Yeh, thanks, I just noticed this: >>> >>> On the Fedora nodes the following works `c++ >>> -D_GLIBCXX_USE_CXX11_ABI=0 --std=c++11 -Wall test.cc -lrados`, and on >>> CentOS 7, either 0 or 1 works for the CXX11_ABI variable. >>> >>> The docs say "When defined to a non-zero value [the CXX11_ABI >>> variable] the library headers will use the new C++11-conforming ABI >>> introduced in GCC 5, rather than the older ABI introduced in GCC 3.4". >>> >>> Makes sense. I guess I expected issues like this to be filtered out / >>> caught through rpm magic. Know of any CMake magic macros that can turn >>> those flags on? >> >> You can try these if you want? >> >> https://copr.fedorainfracloud.org/coprs/badone/ceph-luminous/build/602668/ >> >> Not official of course, but probably (maybe?) better than what you're using now? >> >>> >>> On Thu, Sep 14, 2017 at 2:31 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote: >>>> On Thu, 14 Sep 2017, Noah Watkins wrote: >>>>> Running into some undefined references linking against librados in >>>>> Luminous. Installed using RPM repo instructions from Ceph docs. Note >>>>> this issue shows up on Fedora 23,24,25, but not on CentOS 7. >>>> >>>> It looks a bit like these are C++ ABI differences because you are using >>>> el7 libraries on an fc25 box, which probably has a different >>>> version of gcc, libraries, etc? >>>> >>>> sage >>>> >>>> >>>>> # Test program >>>>> >>>>> [root@0ac98bfcffa2 build]# cat test.cc >>>>> #include <rados/librados.hpp> >>>>> >>>>> int main(int argc, char **argv) >>>>> { >>>>> librados::IoCtx ioctx; >>>>> return ioctx.create("foo", true); >>>>> } >>>>> >>>>> # Linking error >>>>> >>>>> [root@0ac98bfcffa2 build]# c++ --std=c++11 -Wall test.cc -lrados >>>>> /tmp/cc4MZnFR.o: In function `main': >>>>> test.cc:(.text+0x51): undefined reference to >>>>> `librados::IoCtx::create(std::__cxx11::basic_string<char, >>>>> std::char_traits<char>, std::allocator<char> > const&, bool)' >>>>> collect2: error: ld returned 1 exit status >>>>> >>>>> # Looks like everything is installed correctly. >>>>> >>>>> [root@0ac98bfcffa2 build]# librados-config --version >>>>> ceph version 12.2.0 (32ce2a3ae5239ee33d6150705cdb24d43bab910c) luminous (rc) >>>>> >>>>> [root@0ac98bfcffa2 build]# rpm -qa | grep 'rados\|ceph' >>>>> python-rados-12.2.0-0.el7.x86_64 >>>>> python-cephfs-12.2.0-0.el7.x86_64 >>>>> ceph-selinux-12.2.0-0.el7.x86_64 >>>>> ceph-osd-12.2.0-0.el7.x86_64 >>>>> librados2-12.2.0-0.el7.x86_64 >>>>> libradosstriper1-12.2.0-0.el7.x86_64 >>>>> ceph-base-12.2.0-0.el7.x86_64 >>>>> ceph-mds-12.2.0-0.el7.x86_64 >>>>> ceph-mon-12.2.0-0.el7.x86_64 >>>>> ceph-12.2.0-0.el7.x86_64 >>>>> libcephfs2-12.2.0-0.el7.x86_64 >>>>> ceph-common-12.2.0-0.el7.x86_64 >>>>> ceph-mgr-12.2.0-0.el7.x86_64 >>>>> librados-devel-12.2.0-0.el7.x86_64 >>>>> -- >>>>> 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 >>>>> >>>>> >>> -- >>> 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 >> >> >> >> -- >> Cheers, >> Brad -- Cheers, Brad -- 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
