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Subject: Re: net/xmlrpc-c-devel port with GCC 4.8
From: Dimitry Andric <dim@FreeBSD.org>
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Date: Wed, 20 Mar 2013 20:49:51 +0100
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On Mar 20, 2013, at 19:54, deeptech71 <deeptech71@gmail.com> wrote:
> /usr/local/lib/gcc48/include/c++/bits/locale_facets.h:869: undefined =
reference to `std::ctype<char>::_M_widen_init() const'
> [...]
> /usr/local/lib/gcc48/include/c++/bits/stl_list.h:1550: undefined =
reference to =
`std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)'=

> [...]
>=20
> I worked around this by adding "/usr/local/lib/gcc48/libstdc++.so" to =
the make-rule. Weird. Why does this work? Should it?


The link step is erroneously pulling in /usr/lib/libstdc++.so by
default.  Since that is an older version of libstdc++, it does not
contain the symbols you listed.

As you saw, forcing the link stage to use gcc 4.8's version of libstdc++
at least produces an executable.  However, there is very likely still a
problem at runtime, because the resulting executable probably does not
have the correct rpath entry.

This is a general problem with the gcc ports: they should all pull in
their own version(s) of libstdc++.so instead of using the default linker
path.  And possibly add rpath entries, to make sure the correct version
of libstdc++.so is used at runtime.