Re: [Ltib] Issue when changing toolchains in a build

[Stuart Hughes]

Okay, got it now.  I think I can come up with something to do this.  
Will look into it.

On 04/10/12 15:07, Peter Barada wrote:
> On 10/04/2012 08:13 AM, Peter Barada wrote:
> > It's other packages...
> To be specific, its _any_ prepped package that was built using the older
> toolchain.  Yes, I see how the kernel handles this case.  I *could* add
> into every .spec file's %build stanza a test for ${LTIB_FULL_REBUILD}
> and if set then do "make distclean", but since LTIB already has code in
> place to remove all the packages I figured it would be easier during the
> RPM removal to see if the builddir existed and if so execute "make
> distclean" to clean it out (ignoring the result of make in cases where
> they package doesn't have a proper distclean make stanza).
> > Splat-fingered from my iPhone
> >
> > On Oct 4, 2012, at 2:29 AM, "Stuart Hughes"<address@hidden>  wrote:
> >
> > > On 03/10/12 17:45, Peter Barada wrote:
> > > > On 10/03/2012 12:08 PM, Stuart Hughes wrote:
> > > > > On 03/10/12 16:46, Peter Barada wrote:
> > > > > > Stuart,
> > > > > >
> > > > > > If I have a build where the kernel source is needed to build another
> > > > > > module, (or some other package source is needed for another package to
> > > > > > build), then the package is built and the source/object files are in
> > > > > > rpm/BUILD.  If I then do "./ltib -c" and change the toolchain, LTIB
> > > > > > properly de-installs all the packages, and then builds the packages
> > > > > > again using the new toolchain, including the source that was left behind
> > > > > > from the previous build.
> > > > > >
> > > > > > So far so good, but if the new toolchain default (on ARM for example)
> > > > > > causes incompatible object files (i.e. using hard vs soft float ABI on
> > > > > > ARM), then the package source that was previously built will fail to
> > > > > > build/link due to the incompatibility.
> > > > > >
> > > > > > I think the right way to fix this is to execute a "distclean" on package
> > > > > > source that exist, triggered by ${LTIB_FULL_REBUILD} before rebuilding,
> > > > > > but so far I haven't quite figured out the path to get this to happen.
> > > > > > I'm more than happy to tackle it but need a pointer that makes the code
> > > > > > flow clear.
> > > > > >
> > > > > > Thanks in advance!
> > > > > Hi Peter,
> > > > >
> > > > > I agree with your analysis.  Again I need to go off and think about
> > > > > this dark corner of LTIB.  Once I've refreshed my memory, I'll get
> > > > > back to you.
> > > > Thanks!
> > > Hi Peter,
> > >
> > > In the case of kernels, they should already do a full clean if a
> > > LTIB_FULL_REBUILD is set.  If you look in
> > > ./dist/lfs-5.1/kernel/kernel-common.tmpl line 114, you'll see:
> > >
> > > #
> > > # Check for ltib full rebuilds (e.g. change of toolchain) if so
> > > # force a build from scratch
> > > #
> > >
> > > if [ -n "$LTIB_FULL_REBUILD" ]
> > > then
> > >      make ARCH=$LINTARCH HOSTCC="$BUILDCC" mrproper
> > > fi
> > >
> > > Is this causing a problem/not working, or is it other packages that you
> > > need to distclean?
> > >
> > > Regards, Stuart