[Qt-interest] QGLFramebufferObject::blitFramebuffer() link problem

[Liam Staskawicz]

Hi - on both 4.6.1 and 4.6.2 on OS X 10.6, installed from the release binaries, I've found that QGLFramebufferObject::blitFramebuffer() fails to link, complaining that the symbol is undefined.  Other static members on the class, like hasOpenGLFramebufferBlit(), build fine.

The output of `otool -vT` on the QtOpenGL module shows that blitFramebuffer() is in there - __ZN20QGLFramebufferObject15blitFramebufferEPS_RK5QRectS0_S3_mm.  Passing this through c++filt shows the signature as:

QGLFramebufferObject::blitFramebuffer(QGLFramebufferObject*, QRect const&, QGLFramebufferObject*, QRect const&, unsigned long, unsigned long)

whereas the link error shows the signature as

QGLFramebufferObject::blitFramebuffer(QGLFramebufferObject*, QRect const&, QGLFramebufferObject*, QRect const&, unsigned int, unsigned int)

Note the last two arguments are of different types in each.  While I was writing this, I also stumbled upon http://old.nabble.com/Re:-Problem-with-snapshot-and-OpenGL-p27454323.html which shows the same problem.  Maybe there's a problem with the pre-built Qt binaries in this case?

Please let me know if this is a known issue, or if I should open up a new report.

Thanks,
Liam