run time link options

["Brett @Google" <brett.maxfield@gmail.com>]

Is there any likelyhood of -R${PREFIX}/lib making it into the default build options to help mitigate system library mismatches ?

Likewise a -with-bdb-home=/my/berkeley/home, which results in a -L/my/berkeley/home/lib and/or -R/my/berkeley/home/lib option being added to the LDFLAGS variable (-L in the case of a static build, -L and -R in the case of a dynamic build) and -I/my/berkeley/home/include being added to CPPFLAGS ? 

I guess -R may not be available on every platform, buy maybe the presence of -R is detectable ?