Hey Benny!

 BP> make symlink from /lib64 to /lib ?

In your case also make symlink from /usr/lib64 to /usr/lib.

When you build glibc there is a configure parameter 'libc_cv_slibdir=/usr/lib' which if deployed will not require the symlink /usr/lib but will still require the /lib64 to /lib symlink.  However since you are using gentoo's configuration you'll probably want to stick with their configurations and the two symlinks will take care of sources that look to /lib and /usr/lib.

Life is good,
Maurice

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