[Development] moc output from non-local tool build

[Joerg Bornemann]

On 9/14/21 5:45 PM, Thiago Macieira wrote:
> On Tuesday, 14 September 2021 08:37:55 PDT Joerg Bornemann wrote:
>>> Only moc should link to the Bootstrap lib. Period.
>>
>> Well, I guess rcc could also use some good pinch of bootstrapping.
>> And tracegen for that matter.
> 
> Well, tracegen might, since it's used in QtCore. I forgot about it.
> 
> rcc isn't used for QtCore any more.

Good point. Let's unbootstrap it: 
https://codereview.qt-project.org/c/qt/qtbase/+/370954

>> I have a hunch we're talking about different things here. A moc-only, or
>> even a qtbase-only build won't get you far when trying to cross-compile
>> qtdeclarative or such.
> 
> Ok, so to clarify:
> 
> All builds should bootstrap only the tools that are needed to compile QtCore.
> The other tools should link to QtCore, not to the bootstrap lib.

Yes.

> A cross-compiling build needs to use a host tool set, for all tools, because
> all tools it builds are for the target and therefore can't be run in the host
> system.

Yes.

Unless QT_BUILD_TOOLS_WHEN_CROSSCOMPILING is ON which is used in yocto 
context.


Joerg