On Thu, Mar 17, 2011 at 1:05 AM, Lauri T. Aarnio <lauri.t.aar...@nokia.com>wrote:
> > On Mar 16, 2011, at 5:12 AM, ext Han Hartgers wrote: > > Many thanks for the explanation. I did read about the tools root, but >> disregarded that as unimportant. >> > > long time ago it was possible to use "devel" without a separate tools root, > I think. But obviously that haven't been tested lately, and on the other > hand, it is a feature which isn't really useful anyway, as we have learned. > > I'll try to explain the history of these more complex mapping modes, > "devel" and "accel", hopefully that clarifies something: > Removed a lot of text > So, a built-in requirement of "accel" is that the set of tools is built > from the exactly same sources that you are using in the target. Which is the > only configuration that can be recommended anyway, as we have learned. > Alternatively, "devel" can be used, but it should not offer any advantages > over "accel". (In fact, because I don't know any cases where "accel" would > be worse than "devel" if the same-codebase-for-both requirement is met, I'm > planning to drop the aging "devel" mode from the next major version of SB2) > > BTW, sb2 will be using the dynamic linker/loader (ld.so = ld-linux.so.*) > from the tools root in "accel" and "devel" modes. There are some things that > work better if you apply the patches that are shipped with SB2 and rebuild > glibc; see external_patches/README for details. > > Many thanks for your extensive explanation. Maybe it would be nice to add this explanation to the wiki / website for future reference. I will have to recompile my tools root to get the patches included. This should be not too complictated by using the openembedded / angstrom build system. Kind regards, Han
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