Is there any particular reason why libm.a isn't compiled and
   installed as a shared library?

Applications tend to use only a subset of libm.  It's not very big.
It doesn't really change.  Making it a shared library would slow down
numeric applications significantly.

   And perhaps also librpsvc.a?

I don't see what it would gain you, but I also don't see any
particular reason not to.


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