Building experimental 0ad-0.18 fails with patterns
like this:

../../../binaries/system/libglooxwrapper.a(glooxwrapper.o): In function `glooxwrapper::Client::Client(glooxwrapper::string const&)':
/home/pcpa/fedora/0ad/0ad-0.0.18-alpha/build/workspaces/gcc/../../../source/lobby/glooxwrapper/glooxwrapper.cpp:294: undefined reference to `gloox::Client::Client(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'

If rebuilding gloox, and installing, e.g.

$ cd gloox
$ fedpkg local
$ sudo rpm -Uvh --replacefiles --replacepkgs x86_64/gloox-*

and going back to 0ad build it works.