Re: [PATCH V2 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools
From: Masahiro Yamada
Date: Thu Jan 07 2021 - 00:48:24 EST
On Thu, Jan 7, 2021 at 2:16 PM Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
>
> We will start building overlays for platforms soon in the kernel and
> would need these tools going forward. Lets start building them.
The commit log should explain how fdtdump and fdtoverlay are used
while building the kernel tree.
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
> scripts/dtc/Makefile | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
> index 4852bf44e913..c607980a5c17 100644
> --- a/scripts/dtc/Makefile
> +++ b/scripts/dtc/Makefile
> @@ -1,12 +1,18 @@
> # SPDX-License-Identifier: GPL-2.0
> # scripts/dtc makefile
>
> -hostprogs-always-$(CONFIG_DTC) += dtc
> +hostprogs-always-$(CONFIG_DTC) += dtc fdtdump fdtoverlay
> hostprogs-always-$(CHECK_DT_BINDING) += dtc
>
> dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
> srcpos.o checks.o util.o
> dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
> +fdtdump-objs := fdtdump.o util.o
> +
> +libfdt_dir = libfdt
Adding 'libfdt_dir' is not helpful except
increasing the amount of code.
Please hard-code 'libfdt'
> +libfdt-objs := fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o fdt_empty_tree.o fdt_addresses.o fdt_overlay.o
> +libfdt = $(addprefix $(libfdt_dir)/,$(libfdt-objs))
> +fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
> # Source files need to get at the userspace version of libfdt_env.h to compile
> HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
> --
> 2.25.0.rc1.19.g042ed3e048af
>
--
Best Regards
Masahiro Yamada