[Development] moc output from non-local tool build

[Thiago Macieira]

On Tuesday, 14 September 2021 09:03:59 PDT Joerg Bornemann wrote:
> Unless QT_BUILD_TOOLS_WHEN_CROSSCOMPILING is ON which is used in yocto
> context.

I don't see why Yocto Project recipes need to be special.

My problem as a QtCore developer is that almost anything I do will cause the 
Bootstrap lib to rebuild, then moc gets relinked, then header and source with 
Q_OBJECT is re-moc'ed and recompiled.

When your change to use the pre-built tools is in, the problem lessens, in 
that the moc that is used won't change, so I won't get everything re-moc'ed 
and recompiled. However, the Bootstrap lib still gets recompiled and moc 
relinked, so it's unnecessary work.

I'd like to start depopulating the Bootstrap lib so it's MUCH smaller: it 
should only have what moc and tracegen need.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel DPG Cloud Engineering