Qt 4.7.4 build problem

**amleto** · 21st October 2011, 22:13

qt_dynamic_cast_check probably needs rtti.

oh hello there,

error C2065: 'dynamic_cast_will_always_fail_because_rtti_is_dis abled' : undeclared identifier

Could it be any more clear?

**d_stranz** · 23rd October 2011, 22:24

See attached screenshot for where to turn on RTTI in VS 2008. If you're using a Makefile, then you need to add -GR to the cl command options.

Image1.png

**redBeard** · 26th October 2011, 23:33

Originally Posted by amleto

Could it be any more clear?

Yes, indeed, I saw that message.

I was actually looking for a different type of response, one like: "No, Qt cannot be built with the '-no-rtti' option;" or maybe "Oops, there's a bug in the shader package and the fix is..."

Turns out the correct answer is #2 - there's a bug in Qt shader package. I received a fix from Digia and successfully (re-)built with '-no-rtti' option.