Re: Building external modules against objdirs

[Sam Ravnborg <sam@ravnborg.org>]

On Sun, Jul 30, 2006 at 07:49:41PM +0200, Andi Kleen wrote:
> 
> > Can you check that you really did a 'make prepare' in the relevant
> > output directory. Previously only the make *config step was needed.
> 
> The output directory is a full build (configuration + make without any targets).
> Is that not enough anymore? 
> 
> Anyways after a make prepare it seems to work - thanks - but I think that
> should be really done as part of the standard build like it was in 2.6.17.
'make prepare' is and has always been part of the standard build.
So I really do not see what is going on.

Can you please check that followign files exists in your output
directory:
.config
include/config/auto.conf.cmd
include/config/auto.conf

the latter should be the latest of the three.

Also try applying following patch to reveal why we trigger this rule:

diff --git a/Makefile b/Makefile
index 1dd58d3..4c30ed5 100644
--- a/Makefile
+++ b/Makefile
@@ -453,6 +453,7 @@ include/config/auto.conf: $(KCONFIG_CONF
 ifeq ($(KBUILD_EXTMOD),)
 	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 else
+	@echo triggered by - $? -
 	$(error kernel configuration not valid - run 'make prepare' in $(srctree) to update it)
 endif