custom-built gcc 4.6.0 on ubuntu 11.04 links wrong libstdc++

[Razno Razno]

hi all,

my custom built gcc 4.6.0 on ubuntu 11.04, installed in home directory links the system libstdc++ from /usr/lib, most of the time, as evidenced by ldd. the only software i have managed to compile which links correct libstdc++ is the latest release of openmpi 1.5.3. sometimes this is a problem, and sometimes the compiled software just works. does anyone have an explanation on this, or a workaround?

thank you for answering in advance