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I'm currently learning for an exam about compilers and found the following question:

(3 p.) Bootstrapping: Explain the concepts of rehosting and retargeting. Use T-diagrams.

As far as I understand, rehosting means to compile a compiler for another platform (host), so it should look like this:

-------------
| a       b |     --------------
-----   -----     | a        b |
    | c |-------------    ------
    -----| c       x || x |
         -----   ----------
             | ? |
             -----

But is it correct? And what means retargeting?

I can't find any solution in my slides as well as on Google, so I just try to ask here. Sorry if it's the wrong place...

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