[Xenomai-help] Flattened linux tree and CVS

[Xenomai-help] Flattened linux tree and CVS

[Fillod Stephane]

Hi,

For those who have to cope with flat handling of a linux tree in CVS,
and thus never really liked the prepare-kernel.sh approach (which is
fine in other cases), here is some linux/Makefile sugar that can
certainly
be improved:

ifdef XENO_TAG
  xenotagspec = -r $(XENO_TAG)
endif

xeno_checkout:
	@cd $(srctree)/drivers && cvs checkout $(xenotagspec) -P \
				-d xenomai $(XENO_CVS_PATH)/ksrc/drivers
	@cd $(srctree)/include && cvs checkout $(xenotagspec) -P \
				-d xenomai $(XENO_CVS_PATH)/include
	@cd $(srctree)/include/asm-generic && cvs checkout
$(xenotagspec) -P \
				-d xenomai
$(XENO_CVS_PATH)/include/asm-generic
	@cd $(srctree)/include/asm-$(ARCH) && cvs checkout
$(xenotagspec) -P \
				-d xenomai
$(XENO_CVS_PATH)/include/asm-powerpc
	@cd $(srctree)/kernel && cvs checkout $(xenotagspec) -P \
				-d xenomai $(XENO_CVS_PATH)/ksrc
	@cd $(srctree)/arch/$(ARCH) && cvs checkout $(xenotagspec) -P \
				-d xenomai
$(XENO_CVS_PATH)/ksrc/arch/powerpc


Rem: replace powerpc by whatever you see fit.

The variable XENO_CVS_PATH *must* be defined for this work:

  make xeno_checkout XENO_CVS_PATH=some/where/over/the/rainbow/xenomai

This will mix linux and xenomai CVS trees, without links, and let you
do any cvs action like update, commit, tag, etc. against appropriate
CVS modules.

Of course, the "flat" kernel must have been patched beforehand with 
adeos-ipipe patch, and also with the following fragments:

cat xenomai/scripts/Kconfig.frag >> init/Kconfig	# + edit
echo "drivers-\$(CONFIG_XENOMAI) += arch/$linux_arch/xenomai/" >>
arch/$linux_arch/Makefile
echo "obj-\$(CONFIG_XENOMAI) += xenomai/" >> drivers/Makefile
echo "obj-\$(CONFIG_XENOMAI) += xenomai/" >> kernel/Makefile

Rem: this is for linux kernel 2.6, and not for the faint of heart.
Maybe a "prepare-kernel.sh --patch-only-for-those-pesky-cvs-users" 
would come handy :-)

Comments are welcome.
-- 
Stephane

Re: [Xenomai-help] Flattened linux tree and CVS

[Gilles Chanteperdrix]

Fillod Stephane wrote:
> Hi,
> 
> For those who have to cope with flat handling of a linux tree in CVS,
> and thus never really liked the prepare-kernel.sh approach (which is
> fine in other cases), here is some linux/Makefile sugar that can
> certainly
> be improved:
> 
> ifdef XENO_TAG
>   xenotagspec = -r $(XENO_TAG)
> endif
> 
> xeno_checkout:
> 	@cd $(srctree)/drivers && cvs checkout $(xenotagspec) -P \
> 				-d xenomai $(XENO_CVS_PATH)/ksrc/drivers
> 	@cd $(srctree)/include && cvs checkout $(xenotagspec) -P \
> 				-d xenomai $(XENO_CVS_PATH)/include
> 	@cd $(srctree)/include/asm-generic && cvs checkout
> $(xenotagspec) -P \
> 				-d xenomai
> $(XENO_CVS_PATH)/include/asm-generic
> 	@cd $(srctree)/include/asm-$(ARCH) && cvs checkout
> $(xenotagspec) -P \
> 				-d xenomai
> $(XENO_CVS_PATH)/include/asm-powerpc
> 	@cd $(srctree)/kernel && cvs checkout $(xenotagspec) -P \
> 				-d xenomai $(XENO_CVS_PATH)/ksrc
> 	@cd $(srctree)/arch/$(ARCH) && cvs checkout $(xenotagspec) -P \
> 				-d xenomai
> $(XENO_CVS_PATH)/ksrc/arch/powerpc
> 
> 
> Rem: replace powerpc by whatever you see fit.
> 
> The variable XENO_CVS_PATH *must* be defined for this work:
> 
>   make xeno_checkout XENO_CVS_PATH=some/where/over/the/rainbow/xenomai
> 
> This will mix linux and xenomai CVS trees, without links, and let you
> do any cvs action like update, commit, tag, etc. against appropriate
> CVS modules.
> 
> Of course, the "flat" kernel must have been patched beforehand with 
> adeos-ipipe patch, and also with the following fragments:
> 
> cat xenomai/scripts/Kconfig.frag >> init/Kconfig	# + edit
> echo "drivers-\$(CONFIG_XENOMAI) += arch/$linux_arch/xenomai/" >>
> arch/$linux_arch/Makefile
> echo "obj-\$(CONFIG_XENOMAI) += xenomai/" >> drivers/Makefile
> echo "obj-\$(CONFIG_XENOMAI) += xenomai/" >> kernel/Makefile
> 
> Rem: this is for linux kernel 2.6, and not for the faint of heart.
> Maybe a "prepare-kernel.sh --patch-only-for-those-pesky-cvs-users" 
> would come handy :-)
> 
> Comments are welcome.

I guess everyone has his recipe, mine is to use the --enable-linux-build
option of Xenomai configure script.

-- 
                                                 Gilles Chanteperdrix