Dear Joakim Tjernlund,
In message 1291642606-4290-1-git-send-email-Joakim.Tjernlund@transmode.se you wrote:
The -fPIC flag belongs with -mrelocatable, move it there. Also change -fPIC to -fpic as this produces smaller binaries. However, currently -mrelocatable promotes -fpic to -fPIC, a fix for this is in upcoming gcc 4.6 or you can apply this small patch to gcc:
Unfortunately this patch breaks a number of boards:
Bisecting: 0 revisions left to test after this (roughly 0 steps) [33ee4c92339ee386662c0ee2d221098c5cc8b07e] PowerPC: Move -fPIC flag to common place
They fail to build like this:
... Configuring for TQM855L board... /work/tmp-8xx/u-boot.lds:74 cannot move location counter backwards (from 4000800c to 40008000) make: *** [/work/tmp-8xx/u-boot] Error 1 ppc_6xx-size: '/work/tmp-8xx/u-boot': No such file ... Configuring for TQM860L board... /work/tmp-8xx/u-boot.lds:74 cannot move location counter backwards (from 4000802c to 40008000) make: *** [/work/tmp-8xx/u-boot] Error 1 ppc_6xx-size: '/work/tmp-8xx/u-boot': No such file
It seems this change increases the code size somehow - which I would not expect from your comment above. Please have a look.
Very strange, I had a quick look(that is all I can do ATM). It appers that 8xx is the only ppc arch which doesn't have its own u-boot.lds under arch/powerpc/cpu/mpc8xx, is that intentional? Is it only 8xx that has this problem? My guess would be that 8xx missed out on an earlier patch http://git.denx.de/?p=u-boot.git;a=commitdiff;h=337f5f50f539cc1ea1e0533c096e...
Jocke