[ros-users] Linker --as-needed

[Josh Faust]

>
>
> Happy to hear that it works in general (would be pretty bad if it
> didn't...).  I'm more concerned about whether we're currently
> specifying everything completely, or unknowingly exploiting
> overlinkage.
>
> I guess the only way to find out is to build and test everything with
> that option included.
>
>
I just did two quick tests:
 1) .so that overrides a global symbol (strstr in this case)
 2) .so with a global object that has a constructor/destructor

#1 worked, #2 failed (the .so was removed).

If #1 failed I'd say we can't default to it.  Not sure how important #2 is,
but it's something that could definitely cause problems that would be
difficult to track down.

Josh
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