Re: [Ltib] PKG_KERNEL_LEAVSRC issues...

[Peter Barada]

On 12/20/2010 04:35 AM, address@hidden wrote:
> Hi Peter,
>
> I'm going to need to re-read this email as at first read I'm not exactly
> sure what you are running into.  If possible can you reduce it to 2
> sentences of; "I expected this... but observe this...."
Ok, to clear things up, I expect if I remove rpm/RPMS/arm/kernel*.rpm 
and everything in rpm/BUILD that "./ltib" will "do the right thing", 
namely %prep, %build but not %clean the kernel if I have a package 
enabled that selects PKG_KERNEL_LEAVESRC.  Since PKG_*_LEAVESRC is a 
transient config it fails when I try to build helloworld_mod.
> Just to shed some light on the design, normally .config will override
> defconfig, however if you touch defconfig ltib will notice this and use
> the updated defconfig.  The purpose of this is so that if you have an
> autobuilder and check-in an update to defconfig, the autobuilder will use
> the updated defconfig.
In this case I have not touched any of the config files...
> Regarding "LEAVESRC" the idea is that this only needs to be transient as
> once a package is left unpacked, it will never be removed and so on
> subsequence builds the same sources remain there and just get re-built.
True, but being "paranoid" especially if I'm mucking with the config(s) 
and package spec files, its easiest to force multiple package rebuilds 
by deleting their resultant .rpm and rpm/BUILD directories and executing 
"./ltib".  Also my buildbot leaves its universe alone (i.e. all it does 
is "svn update; ./ltib -m clean; ./ltib -b --preconfig 
config/platform/<platform>/defconfig").

I'm sure I'm missing something - how can I tell LTIB to remove a 
package's source (that's left around due to LEAVESRC) - if its exists in 
rpm/BUILD, ltib cowardly refuses to remove it even if I update its .spec 
file. So I added a "rm -rf rpm/BUILD/* to the buildbot steps and ended 
up w/o kernel source and helloworld_mod failing.

> Regards, Stuart
>
>
> > Stuart,
> >
> > I've pulled LTIB from CVS on 20101216, and am using it for the basis of
> > OMAP work, and I'm runing into an issue.
> >
> > I'm running into trouble due to the code in LTIB that clears out
> > PKG_*_LEAVESRC after a build completes.
> >
> > The issue arises when I wanted to rebuild (from close to scratch) by
> > removing everything in rpm/BUILD, rpm/RPMS/arm, and rootfs, then execute
> > "./ltib" to rebuild the world .  Unfortunately
> > config/platform/<platform>/.config takes precedence over the defconfig
> > and requires "./ltib -b --preconfig
> > config/platform/<platform>/defconfig" to make things work correctly
> > (this is due to the cod ein clear_transient_config clearing
> > PKG_KERNEL_LEAVESRC which gets stored in
> > config/platform/<platform>/.config and used by "./ltib" ib it exists).
> >
> > I believe that PKG_KERNEL_LEAVESRC is overloaded as its used not only in
> > a one-shot case, but also to force the requirement of kernel source for
> > packages that need the kernel source.
> >
> > I had solved this previously by creating a new PKG_<package>_NEEDSRC
> > variable is used in the ltib configuration select mechanisms(e.g):
> >
> > config PKG_HELLOWORLD_MOD
> >       depends CAP_HAS_MMU
> >       select PKG_KERNEL_NEEDSRC
> >       bool "hello world module example"
> >       help
> >           simple hello world kernel modules example
> >
> > and then used either PKG_<package>_LEAVSRC or PKG_<package>_NEEDSRC to
> > force ltib to skip the %clean section:
> >
> >           if($leavesrc || $pcf->{$key . '_LEAVESRC'} || $pcf->{$key .
> > '_NEEDSRC'}) {
> >               $rpmclean = '';
> >               $ENV{$key . '_LEAVESRC'} = 'y';
> >           } else {
> >               $rpmclean = '--clean --rmsource ';
> >           }
> >
> > and left the code in clear_transient_configs alone along with the use of
> > PKG_KERNEL_LEAVESRC in config/platform/<platform>/main.lkc.  I also
> > added the PKG_KERNEL_NEEDSRC rebuild key into $config_deps where LEVESRC
> > was used - is there a way to have LTIB automatically detect a change in
> > PKG_<package>_LEAVESRC/NEEDSRC and automatically force<package>  to be
> > rebuilt?  I ask partly since in the same project I had to go through
> > hoops to have openssl/wpa_supplicant source remain to build the wireless
> > driver for the wl127x wireless chip (for its encryption support).
> >
> > Either my understanding of LTIB is off(no surprise there), and/or
> > PKG_<package>_LEAVSRC has subtle side effects.  This drove me nuts until
> > I "fixed" it.  Ican create a patch to the current LTIB CVS and send it
> > along...
> >
> > --
> > Peter Barada
> > address@hidden
> >
> >
> > _______________________________________________
> > LTIB home page: http://ltib.org
> >
> > Ltib mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/ltib


--
Peter Barada
address@hidden