Re: [PATCH v2 2/9] nios2: build .dtb files in dts directory

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On Wed, 2018-09-05 at 18:53 -0500, Rob Herring wrote:
> Align nios2 with other architectures which build the dtb files in the
> same directory as the dts files. This is also in line with most other
> build targets which are located in the same directory as the source.
> This move will help enable the 'dtbs' target which builds all the
> dtbs
> regardless of kernel config.
> 
> This transition could break some scripts if they expect dtb files in
> the old location.
> 
> Cc: Ley Foon Tan <lftan@xxxxxxxxxx>
> Cc: nios2-dev@xxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> Please ack so I can take the whole series via the DT tree.
> 
>  arch/nios2/Makefile          | 4 ++--
>  arch/nios2/boot/Makefile     | 4 ----
>  arch/nios2/boot/dts/Makefile | 1 +
>  3 files changed, 3 insertions(+), 6 deletions(-)
>  create mode 100644 arch/nios2/boot/dts/Makefile
> 
> diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
> index 8673a79dca9c..50eece1c6adb 100644
> --- a/arch/nios2/Makefile
> +++ b/arch/nios2/Makefile
> @@ -59,10 +59,10 @@ archclean:
>         $(Q)$(MAKE) $(clean)=$(nios2-boot)
> 
>  %.dtb: | scripts
> -       $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
> +       $(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@
> 
>  dtbs:
> -       $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
> +       $(Q)$(MAKE) $(build)=$(nios2-boot)/dts
> 
>  $(BOOT_TARGETS): vmlinux
>         $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
> diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
> index 2ba23a679732..007586094dde 100644
> --- a/arch/nios2/boot/Makefile
> +++ b/arch/nios2/boot/Makefile
> @@ -47,10 +47,6 @@ obj-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) +=
> linked_dtb.o
> 
>  targets += $(dtb-y)
> 
> -# Rule to build device tree blobs with make command
> -$(obj)/%.dtb: $(src)/dts/%.dts FORCE
> -       $(call if_changed_dep,dtc)
> -
>  $(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
> 
>  install:
> diff --git a/arch/nios2/boot/dts/Makefile
> b/arch/nios2/boot/dts/Makefile
> new file mode 100644
> index 000000000000..f66554cd5c45
> --- /dev/null
> +++ b/arch/nios2/boot/dts/Makefile
> @@ -0,0 +1 @@
> +# SPDX-License-Identifier: GPL-2.0
> --
> 2.17.1
> 
Hi Rob

I have synced your all-dtbs branch from here: https://git.kernel.org/pu
b/scm/linux/kernel/git/robh/linux.git/log/?h=all-dtbs

It shows error when compile kernel image and also when "make
dtbs_install".



make dtbs_install
make[1]: *** No rule to make target
'arch/nios2/boot/dts/arch/nios2/boot/dts/10m50_devboard.dtb', needed by
'arch/nios2/boot/dts/arch/nios2/boot/dts/10m50_devboard.dtb.S'.  Stop.
Makefile:1229: recipe for target 'dtbs' failed
make: *** [dtbs] Error 2

Regards
Ley Foon



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