From: Frank Rowand <frowand.list@gmail.com>
To: Viresh Kumar <viresh.kumar@linaro.org>,
Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kbuild@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
Bill Mills <bill.mills@linaro.org>,
anmar.oueja@linaro.org
Subject: Re: [PATCH V2 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools
Date: Tue, 19 Jan 2021 10:34:59 -0600 [thread overview]
Message-ID: <102ca277-d404-902d-3254-e3ff787c232c@gmail.com> (raw)
In-Reply-To: <8e6395db-6ae4-f231-22fb-910eb2208477@gmail.com>
On 1/19/21 10:28 AM, Frank Rowand wrote:
> On 1/6/21 11:15 PM, Viresh Kumar wrote:
>> We will start building overlays for platforms soon in the kernel and
>> would need these tools going forward. Lets start building them.
>>
>> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
>> ---
>> 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
>> +
>
> # The upstream project builds libfdt as a separate library. We are choosing to
> # instead directly link the libfdt object files into fdtoverly
>
>> +libfdt_dir = 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
>>
>
> In general, I am a proponent of using shared libraries (which the upstream project
> builds by default) because if a security bug in the library is fixed, it is fixed
> for all users of the library.
>
> In this specific case, I actually prefer the implementation that the patch provides
> (directly linking the library object files into fdtoverlay, which uses the library)
> because it is the only user of the library _and_ fdtoverlay will not inadvertently
> use the system wide libfdt if it happens to be installed (as it is on my system).
>
> Any thoughts on this Rob?
I see that this patch series is up to v4, so I commented in the wrong place.
I will repeat this comment in the v4 series.
>
> -Frank
>
next prev parent reply other threads:[~2021-01-19 18:28 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 5:15 [PATCH V2 1/2] scripts: dtc: Add fdtoverlay.c and fdtdump.c to DTC_SOURCE Viresh Kumar
2021-01-07 5:15 ` [PATCH V2 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools Viresh Kumar
2021-01-07 5:45 ` Masahiro Yamada
2021-01-07 6:25 ` [PATCH V3 " Viresh Kumar
2021-01-12 0:44 ` Frank Rowand
2021-01-12 5:08 ` Viresh Kumar
2021-01-12 18:34 ` Frank Rowand
2021-01-13 4:55 ` Viresh Kumar
2021-01-12 0:55 ` Frank Rowand
2021-01-12 4:48 ` Viresh Kumar
2021-01-19 16:28 ` [PATCH V2 " Frank Rowand
2021-01-19 16:34 ` Frank Rowand [this message]
2021-01-08 8:41 ` [PATCH] of: unittest: Statically apply overlays using fdtoverlay Viresh Kumar
2021-01-11 15:46 ` Rob Herring
2021-01-11 22:09 ` Frank Rowand
2021-01-14 5:03 ` Viresh Kumar
2021-01-14 15:01 ` Rob Herring
2021-01-15 5:44 ` Viresh Kumar
2021-01-18 3:54 ` Frank Rowand
2021-01-19 2:30 ` Frank Rowand
2021-01-18 6:30 ` David Gibson
2021-01-19 2:29 ` Frank Rowand
2021-01-11 22:06 ` Frank Rowand
2021-01-12 1:22 ` Bill Mills
2021-01-12 8:37 ` Viresh Kumar
2021-01-12 10:16 ` Bill Mills
2021-01-12 18:17 ` Frank Rowand
2021-01-12 14:04 ` Rob Herring
2021-01-12 19:06 ` Frank Rowand
2021-01-12 19:41 ` Rob Herring
2021-01-12 20:05 ` Frank Rowand
2021-01-12 20:46 ` Rob Herring
2021-01-13 2:20 ` Frank Rowand
2021-01-13 15:05 ` Rob Herring
2021-01-13 17:21 ` Frank Rowand
2021-01-14 5:00 ` Viresh Kumar
2021-01-19 2:25 ` Frank Rowand
2021-01-19 2:21 ` frowand.list
2021-01-19 8:05 ` Viresh Kumar
2021-01-19 15:44 ` Frank Rowand
2021-01-20 5:06 ` Viresh Kumar
2021-01-20 6:20 ` Viresh Kumar
2021-01-21 5:00 ` Frank Rowand
2021-01-21 5:09 ` Viresh Kumar
2021-01-21 6:41 ` David Gibson
2021-01-11 22:13 ` [PATCH V2 1/2] scripts: dtc: Add fdtoverlay.c and fdtdump.c to DTC_SOURCE Frank Rowand
2021-01-12 4:45 ` Viresh Kumar
2021-01-19 16:21 ` Frank Rowand
2021-01-19 16:31 ` Frank Rowand
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