emulators/virtualbox-ose can't work when switching to gcc46

[John Hein]

Baptiste Daroussin wrote at 15:22 +0200 on Sep 13, 2013:
 > On Fri, Sep 13, 2013 at 03:33:57PM +0300, Volodymyr Kostyrko wrote:
 > > Hello.
 > >
 > > Just a tiny background. I'm just experimenting with getting rid of
 > > in-base gcc and using compiler from ports whenever possible. And gcc46
 > > produces much better code then our gcc42.
 > >
 > > When I change USE_GCC to yes everything compiles and install perfectly.
 > > But when I try to run VirtualBox I get this:
 > >
 > > VirtualBox: Error -610 in supR3HardenedMainInitRuntime!
 > > VirtualBox: dlopen("/usr/local/lib/virtualbox/VBoxRT.so",) failed:
 > > /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.15 required by
 > > /usr/local/lib/virtualbox/VBoxRT.so not found
 > >
 > > VirtualBox: Tip! It may help to reinstall VirtualBox.
 > >
 > > Substituting /usr/lib/libstdc++.so.6 with
 > > /usr/local/lib/gcc46/libstdc++.so.6 fixes that and VirtualBox is fully
 > > functional, but this looks like wrong library resolution order or what?
 > > Can this be fixed somewhere in the port or should I brag the guys that
 > > stay behind adopting clang? Or is this rather a problem with gcc port?
 >
 > This looks like the libstdc++ nigthmare, you can't mix multiple version of
 > libstdc++ because they are incompatible! one of the vbox dependency is linked
 > against the base version of libstdc++ and vbox with gcc46 is linking against a
 > newer version of libstdc++.

-nostdlib?
or maybe -nodefaultlibs?
& related options (see gcc info docs)