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
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