libpng: static vs dynamic

[gardiol]

My app has libpng statically embedded into it... The reason is that is required on some of the supported platforms. On MeeGo, it clashes with the system wide dynamic libpng causing all my png's to be broken.

Can i force m app to use my internal libpng?
or is there a way to conditionally deselect some files in the .pro file?

EDIT: the actual problem seems to be the other way around. Qt is using MY libpng (1.5.0) instead of the built-in 1.2.42... Now i am a a loss...

EDIT2: i am answring myself: i moved SOURCES += with all the libpng files into the symbian specific section of the pro file.

[achipa]

The recommendation is to provide the library (static or dynamic) only if the platform doesn't provide it, so the solution to move the alternate build into a platform scope is the the way to go.