On Feb 21, 2011, at 16:23, Wolfgang Denk wrote: > In message <1298311199-18775-6-git-send-email-kyle.d.moff...@boeing.com> you > wrote: >> Standard Debian powerpc and powerpcspe systems only include hard-float >> libgcc in their native compilers, which causes scary build warnings when >> building U-Boot. >> >> The easiest way to resolve this is to borrow the routines that U-Boot >> needs from the Linux kernel (GPLv2-licensed), which has the same issue. > > Actually the code says "either version 2 of the License, or (at your > option) any later version", as far as I can tell ?
Ah, sorry, I dropped the "+" in there somehow. Will fix. >> Specifically, the routines are: _ashldi3(), _ashrdi3(), and _lshrdi3(). > > We have been building for years on such systems, and I don;t remember > that such issues have been reprted before for Power Architecture > systems (I remember only ARM to have such issues). Debian/RedHat used to build "nof" libraries, but they were almost completely unused and several major bugs went unnoticed for a while. Furthermore, they took a lot of time to build and they basically did not get used. Eventually it was decided to just remove the "nof" (soft-float) libgcc, etc. It's not actually fatal right now, because the 3 routines that it pulls from hard-float libgcc don't use floating point (you just get a nasty warning). The problem is that if somebody were to accidentally use one of the hard-float-based routines in U-Boot I would unexpectedly get indeterminate results instead of compile errors. > Please also follow the rules when copying code from Linux - provide > exact reference; see bullet # 4 at > http://www.denx.de/wiki/view/U-Boot/Patches#Attributing_Code_Copyrights_Sign Will fix, thanks! Cheers, Kyle Moffett
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