mysql built with pkgsrc gcc6 missing atomic.so

[David Brownlee <abs%absd.org@localhost>]

Mysql-5.7 built with pkgsrc gcc the installed on another machine fails to run due to missing libatomic.so

ldd `which mysql`|ag latomic     

        -latomic.3 => not found

Installing gcc6-libs-6.5.0nb3 fixes it

ldd `which mysql`|ag latomic     
        -latomic.3 => /usr/pkg/gcc6/x86_64--netbsd/lib/./libatomic.so.3

Should mysql set USE_PKGSRC_GCC_RUNTIME?

Thanks

David