[Development] Breaking up QtPlatformSupport

[morten.sorvig at Nokia.com]

On Mar 12, 2012, at 11:24 AM, ext Thiago Macieira wrote:
Anyway, either way this library will be gone. The most likely solution is that
we will break it up into many smaller .a libraries.

One other thing I've noticed is that linking agains an .a library breaks incremental builds: touch qfontengine_coretext.mm, and the following top-level build will not re-link the cocoa platform plugin.

The best way to fix this seems to just include the relevant platform support .pri files directly in the cocoa plugin (see http://codereview.qt-project.org/#change,16107).

Since nobody seems to want multiple .a files, what if we compromise and allow both approaches? In-source platform plugins can use the .pri files directly while out-of-source plugins link against libplatformsuppport.

Morten

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