On that machine, I use g++-4.5, 4.6, and 4.7. If I compile the Boost
libraries with the oldest compiler, the binary compatibility is ensured,
because the soname of libstd++ is libstdc++.so.6 for all of those
compilers (but the binary compatibility is only ensured backward: if a
Boost library is compiled with g++-4.6, that does not work if it is after
linked with libstdc++ of g++-4.5).
- Only one variant: multithread, shared, release, with the tagged layout,
so that the soname ends with "-mt.so",
- and do not compile all Boost libraries.