[yocto] bbappend - FILESEXTRAPATHS

[Koehler, Yannick]

"We do not want to force users to place patches inside a particular folder
(policy), instead the system offer a mechanism to place these any place you
want (other recipes choose PN, for example)"

I understand that and I agree with it, at the same time, I do not get the
requirement to put FILESEXTRAPATHS.  If it is missing, I feel that bitbake
should have a default behavior that is to use the same FILESPATHS as defined
in bb but under the bbappend location.

If people want to change that behavior, then they add FILESEXTRAPATHS.

--
Yannick Koehler

-----Original Message-----
From: Leonardo Sandoval [mailto:leonardo.sandoval.gonzalez at linux.intel.com] 
Sent: Friday, October 20, 2017 10:39 AM
To: Koehler, Yannick <yannick.koehler at hpe.com>
Cc: yocto at yoctoproject.org
Subject: Re: [yocto] bbappend - FILESEXTRAPATHS

On Fri, 20 Oct 2017 13:30:06 +0000
"Koehler, Yannick" <yannick.koehler at hpe.com> wrote:

> Hi,
> 
>  
> 
> I have been using Yocto for over 2 years now, and whenever I create a 
> new bbappend file, I always have to remember that FILESEXTRAPATHS 
> variable, often typing it wrong, EXTRAFILESPATHS or FILEEXTRAPATHS or 
> FILESEXTRAPATH, etc.
> 
>  
> 
> I did a quick check on my setup and on 102 bbappend recipe found, 
> there are
> 73 that uses the FILESEXTRAPATHS variable, so that is around 71% of them.

> 
>  
> 
> I was wondering if the team would enhance the user/dev experience here 
> and modify bitbake behavior as to not require this variable and be 
> able to "override" any FILESPATH that already exists with the bbappend 
> location.  So that for example the FILESPATH "files" would be looked 
> up in the bbappend folder location before the initial bb recipe folder 
> location automatically without having to manually enter a FILESEXTRAPATHS
statement.

One easy way to avoid this error is to place the FILESEXTRAPATHS variable
inside a custom bbclass them inherit it from the recipe, at least it is less
prone to typos. We do not want to force users to place patches inside a
particular folder (policy), instead the system offer a mechanism to place
these any place you want (other recipes choose PN, for example)

> 
>  
> 
> Or alternatively, a script or command to create an initial skeleton 
> bbappend with the initial .bb in comment
> 
>  
> 
>                bbappend mylayer recipename.bb
> 
>                # Create a file under mylayer/recipes-*/*.bbappend 
> (using % for version when not specified on cmd line) with the original 
> .bb in comment and a section containing FILESEXTRAPATHS
> 

Right, I think there is no tool to create bbappends from the command line.

Anyway, feel free to file a bug (bugzilla.yoctoproject.org) with your
enhancement.


>  
> 
> I think this would greatly help when creating those files.
> 
>  
> 
> --
> 
> Yannick Koehler
> 
> HPE Aruba
> 


--
Leonardo Sandoval <leonardo.sandoval.gonzalez at linux.intel.com>
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