Re: [PATCH] scripts/dtc: update dtx_diff cpp and dts include paths to match build

From: Rob Herring
Date: Mon Sep 18 2017 - 11:02:03 EST

On Sat, Sep 16, 2017 at 12:52 PM, Frank Rowand <frowand.list@xxxxxxxxx> wrote:
> On 09/15/17 15:42, Rob Herring wrote:
>> On Fri, Sep 15, 2017 at 5:16 PM, <frowand.list@xxxxxxxxx> wrote:
>>> From: Frank Rowand <frank.rowand@xxxxxxxx>
>> I feel like we just had the same subject. Can you make it more specific.
> Yes, the previous one was pretty much the same words, but the one line
> description is not an exact match. I will come up with a more unique
> subject.
>>> Update dtx_diff include paths in the same manner as:
>>> commit b12869a8d519 ("of: remove drivers/of/testcase-data from
>>> include search path for CPP"), commit 5ffa2aed389c ("of: remove
>>> arch/$(SRCARCH)/boot/dts from include search path for CPP"), and
>>> commit 50f9ddaf64e1 ("of: search scripts/dtc/include-prefixes path
>>> for both CPP and DTC").
>> We need a better way for this to stop happening besides me remembering
>> in reviews...
> Yep, me remembering in reviews. Which I have. :-)
>> Perhaps a separate file of include paths that all tools can use?
> I considered that with the very first version of dtx_diff. At the time,
> I expected changes to the include path to be very rare. I still have
> that expectation looking forward.

Let's hope so...

> I considered having dtx_diff scrape the include paths out of Makefile.lib,
> but that seemed fragile and kludgey. I could create a shell script that
> outputs the include paths, Then Makefile.lib and dtx_diff could use
> that script to get the include paths.
>>> Remove proposed include path kernel/dts/, which was never implemented
>>> for the dtb build.
>>> For the diff case, each source file is compiled separately. For
>>> each of those compiles, provide the location of the source file
>>> as an include path, not the location of both source files.
>>> ---
>>> The referenced commits b12869a8d519, 5ffa2aed389c, 50f9ddaf64e1
>>> are in v4.14-rc1. No stable kernels need this patch.
>>> scripts/dtc/dtx_diff | 22 +++++++++-------------
>>> 1 file changed, 9 insertions(+), 13 deletions(-)
>>> Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxx>
>> This is going to get dropped.
>> Rob
> I am assuming the drop is because of the request to have a common
> file for all tools to source for the include paths. I'll re-spin
> to implement that.

No, I just mean your S-o-B is going to get dropped by git-am since it
is below the first '---'. Just improve the subject otherwise.