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

[Peter Barada]

It's other packages...

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
> 
> 
> 
> 
> 
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