Xcode resolves dependencies at the beginning of each target, so if a
Qt preprocessor such as moc or rcc updates a cpp file Xcode will not
rebuild the cpp file until the next build.
We solve this by moving the Qt proceprocesor handling to a separate
aggregate build tool target, which the main application target then
depends on.
Change-Id: I8f9225b9603dc5f279b1cb60976fe709bd97963e
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
910573f8e6