[OE-core] what exactly is the proper way to use FILESEXTRAPATHS?

[Rifenbark, Scott M]

New bug filed...

https://bugzilla.yoctoproject.org/show_bug.cgi?id=3552

Scott

>-----Original Message-----
>From: Richard Purdie [mailto:richard.purdie at linuxfoundation.org]
>Sent: Friday, December 07, 2012 8:12 AM
>To: Robert P. J. Day; Rifenbark, Scott M
>Cc: OE Core mailing list
>Subject: Re: [OE-core] what exactly is the proper way to use
>FILESEXTRAPATHS?
>
>On Thu, 2012-12-06 at 18:20 -0500, Robert P. J. Day wrote:
>> On Thu, 6 Dec 2012, Richard Purdie wrote:
>>
>> > On Thu, 2012-12-06 at 15:27 -0500, Robert P. J. Day wrote:
>> > > continuing my trek through coding pedantry and was wondering about
>> > > the exact purpose of the common line in .bbappend files:
>> > >
>> > > FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
>> > >
>> > > or some slight variation thereof.
>> > >
>> > >   i *thought* i knew what it did, so i did a small experiment with
>the
>> > > meta-ti layer and netbase (since i was already messing around with
>> > > it), and i replaced the contents of the netbase .bbappend file
>with
>> > > the single line:
>> > >
>> > > FILESEXTRAPATHS_prepend := "rday"
>> > >
>> > > and checked the environment for the value of FILESPATH for the
>netbase
>> > > recipe and, after formatting to read it clearly, what i saw was:
>> > >
>> > > FILESPATH="rday/linux-gnueabi
>> > > rday/arm
>> > > rday/build-linux
>> > > rday/pn-netbase
>> > > rday/beagleboard
>> > > rday/omap3
>> > > rday/armv7a
>> > > rday/
>> > > rday/class-target
>> > > rday/forcevariable
>> > > rday/libc-glibc
>> > > rday/
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/linux-gnueabi
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/arm
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/build-linux
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/pn-netbase
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/beagleboard
>> > > /home/rpjday/OE/dist/layers/oe-core/meta/recipes-
>core/netbase/netbase-5.0/omap3
>> > > ... snip ...
>> > >
>> > >   what the heck?  if that's what FILESEXTRAPATHS is supposed to
>do,
>> > > that is definitely *not* how it's being used in many, many
>bbappend
>> > > files.
>> > >
>> > >   is there an explanation somewhere as to what the above is
>supposed
>> > > to represent?
>> >
>> > What is puzzling about the above? Its doing what it was designed to
>do.
>> >
>> > The idea is to add the directory listed to the set of directories
>that
>> > get "autogenerated" from OVERRIDES as search locations. What did you
>> > expect it to do?
>>
>>   i am, right this minute, looking at the explanation of
>> FILESEXTRAPATHS in the poky reference manual glossary.  i see
>> absolutely no mention of the word "OVERRIDES".
>>
>>   signing off for the evening as i'm starting to get annoyed ...
>
>It sounds like the docs are missing some details about how this works
>and what its designed to do. We should add the information and there are
>several of us who will happily work with Scott on fixing that.
>
>Getting annoyed isn't going to help.
>
>I'd also add that we're about to change the way this works a little so
>we'd perhaps better hold off fixing the manual until we've made that
>change (which will simplify the lists of search paths you've been seeing
>further).
>
>Scott: Looks like we need to tweak the manual in this location. Could
>you open a bug or otherwise track this please?
>
>Cheers,
>
>Richard
>