Re: Using automake in conjunction with kbuild Makefile

[Steve Kreyer]

Hi Stepan,

first of all thanks for the fast answer.

Stepan Kasal wrote:
> Hello Steve,
>   I do not have any experience with kbuilt, but I'll try to generate
> some hins anyway:
>
> On Mon, Nov 13, 2006 at 11:48:29AM +0100, Steve Kreyer wrote:
>   
> > DEFAULT_INCLUDES = address@hidden@
> >     
>
> two nits about this line: No need to use @..@, use $(abs_top_srcdir)
> instead.
>   
I have tried this but it didn't work...
> Why do you re-define DEFAULT_INCLUDES?
> Wouldn't it be more appropriate to use AM_CPPFLAGS?
> (But maybe I'm missing something.)
>   
It is needed because the module is buildet by kbuild outside
the source tree, so I need absolute path names, but $(DEFAULT_INCLUDES)
only provides the default include directories with relative paths...
>   
> > example a make distcheck will fail because the module sources
> > will not be copied into the build environment of the distcheck...
> >     
>
> Thank you for the description of the situation, but I think your
> description of the actual problem could be more exact.
>
> `make distcheck' is just an automated way to check for features which
> should every package support.  The feature you are speaking about is
> so called ``vpath build'', when srcdir != builddir.
>
> So you can do the same manually:
>         make dist-bzip2
>         mkdir _check
>         (cd _check ; tar xjf ../*.bz2)
>         #chmod -R -w _check
>         mkdir _build; cd _build
>         ../_check/configure
>         make
>
> Does this work?  Does it work if you add the chmod command in the
> middle, to make the source tree read-only?
>   
No, it also don't work, with the same result that the needed source
file is missing...
But your example cleared my brain:

Iam also no kbuild expert, but as described above
kbuild compiles the kernel modules outside the source tree (vpath build), so
it can't locate the sources in _build while running the distcheck and it 
fails...

> If not, what is the error message?  Fix it or post it to this list to
> get some help.
>
> Or perhaps you are not willing to support vpath builds.  (Does kbuild
> usually support them?)  If that is the case, you do not want to use
> `make distcheck', at least not the complete version brought to you by
> automake.
>
> Have a nice day,
>         Stepan
>   
Thanks,
Steve