[yocto] Need clarification on some terms

[William Mills]

On 06/12/2013 03:51 PM, Paul D. DeRocco wrote:
> For now, I really just need to know if I'm interested in the SDK, since I
> have no intention of ever running compilations on my target system.
>

Trevor's answer has a lot of great background.

My short answer is gcc-cross is for use inside bitbake (in the host) and 
gcc-crosssdk is for use outside of bitbake (still on the host).  This 
outside bitbake use case is the SDK Trevor described.

Why does gcc need to get built differently between these two use cases? 
  I gave up asking this many years ago and accepted it as "something I 
can not change" for my own serenity.  I am sure Paul or Khem could give 
the detail.  The sdk version does have extra stuff to make it 
relocatable etc that is not needed inside of bitbake.  However I don't 
know why we don't always build the sdk-able version.