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Old 06-20-2005, 10:17 AM   #1
Registered: Dec 2001
Location: Basel, Switzerland
Distribution: ubuntu
Posts: 297

Rep: Reputation: 31
can't compile gentoo patched kernel on ppc


I have a strange problem. I compiled my kernel (gentoo: vanilla sources 2.6.12) without probems. My problem was, that I didn't have proper powermanagement (such as sleep), so I read some docs and found out, that I need the gentoo kernels (which are already patched). So I tried to compile gentoo-sources-2.6.12. At some point of the compile process, i got following error message:

all these errors occur in drivers/ide/ppc/pmac.c lines 2174, 2175, 2184

'__ide_dma_off_quietly' undeclared (first use in this function)
'__ide_dma_on' undeclared (first use in this function)
'__ide_dma_timeut' undeclared (first use in this function)

So. What did go wrong? I have an up-to-date system, I did emerge sync several times, recompiled almost every possible package, but still... Another strange thing is, that some weeks earlier, i could compile gentoo sources 2.6.7...

Besides: I use gcc-3.4.4 on an Apple iBook newWorld, gentoo profile 2004.3

Thanks for any help.

Old 06-21-2005, 03:18 AM   #2
Registered: Mar 2003
Location: Belgium
Distribution: Hardened gentoo
Posts: 323

Rep: Reputation: 30
Sometimes such errors are caused by a 'stale' kernel build system (dependencies in /usr/src/linux not up to date -- has nothing to do with the gentoo build system), try this:
Go to the kernel source dir, save your .config in a place out of it (/tmp or so), then do 'make mrproper', copy the .config file back, and rebuild the kernel...
The 'make mrproper' will clean out all cached dependencies, etc... I once had unresolved symbol errors and doing this fixed it!

Not sure if this will fix your problem... it could also be a bug in the patch, maybe due to not enough testing on ppc. Maybe filing a gentoo bug report may help in that case.

Good luck with it!

Last edited by nukkel; 06-21-2005 at 03:21 AM.
Old 06-21-2005, 06:49 AM   #3
Registered: Dec 2001
Location: Basel, Switzerland
Distribution: ubuntu
Posts: 297

Original Poster
Rep: Reputation: 31

I found a soulution. I was missing a kernel option which must be activated (an option called something linke ide pci dma, and which is NOT located near the pmac dma option) very strange.

Thanks anyway.



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