[Kernel-handbook-general] About changing the configuration before building

[Ben Hutchings]

On Fri, 2014-12-12 at 10:52 +0800, Chen Baozi wrote:
> Hi all,
> 
> According to the handbook, to change the configuration before building, one
> could do:
> 
> $ make -C debian/build/build_${ARCH}_${FEATURESET}_${FLAVOUR} menuconfig
> 
> And then build the packages using:
> 
> $ fakeroot make -f debian/rules.gen \
> 	binary-arch_${ARCH}_${FEATURESET}_${FLAVOUR}
> 
> However, it seems that what the first command is the .config under the
> debian/build/build_${ARCH}_${FEATURESET}_${FLAVOUR}, while the binary-arch
> would use the config from ${BUILD_DIR}/config.${ARCH}_${FEATURESET}_${FLAVOUR}.
[...]

The latter file is only generated and copied while the build directory
is being set up (setup_$(ARCH)_$(FEATURESET)_$(FLAVOUR) targets).  Once
that is done (indicated by the presence of a stamp file), invoking the
corresponding build-arch and binary-arch targets will not cause it to be
copied again.

Ben.

-- 
Ben Hutchings
Kids!  Bringing about Armageddon can be dangerous.  Do not attempt it in
your own home. - Terry Pratchett and Neil Gaiman, `Good Omens'
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