If you even define KBUILD_EXTRA_SYMBOLS in Makefile for modules it will not be expanded into command line argument for modpost. KBUILD_EXTRA_SYMBOLS help helps to fix undefined symbols errors when CONFIG_MODVERSIONS is set and CONFIG_MODULE_FORCE_LOAD is not set.
Created attachment 165385 [details, diff] linux-2.6-KBUILD_EXTRA_SYMBOLS.patch This patch fixes the problem here.
Where did the patch come from? It does not seem to have been applied upstream.
wrongly reassigned this one
(In reply to comment #2) > Where did the patch come from? From me. > It does not seem to have been applied upstream. It's still not in linus tree but it was included in mm tree and although I've tried to mail this patch to linux-kernel as Andrew Morton told me to do I've seen no reaction on my mail. 25 Oct 2008 I've received mail from akpm AT linux-foundation.org to me, Sam Ravnborg and again akpm with this patch inside, but I have no ideas on intentions of that mail... But that's said, I've found that although this KBUILD_EXTRA_SYMBOLS is broken it's not required for madwifi-ng. That's why I think we can wait that one day somebody finally fixes this issue UPSTREAM and that's how we'll get fixed version in Gentoo. I think currently there is no need for our kernel team to spend time on this issue. Resolving as UPSTREAM.
And now I've received copy of mail from Sam Ravnborg to Linus Torvalds which is pull request where this patch is included. So this fix is closer to became included upstream AFAIU. The fun note is that this pull request includes two patches from Gentoo developers: Mike Frysinger (1): kbuild: setlocalversion: dont include svn change count Peter Volkov (1): kbuild: fix KBUILD_EXTRA_SYMBOLS Gentoo is still working with upstream to make our distribution better:)
