Quote Originally Posted by Uwe View Post
Please one more check: is everything okay, when you build Qwt for debug and release ?
I checked, everything works fine.

Quote Originally Posted by Uwe View Post
This is a environment variable, so do "export QMAKEFEATURES = /usr/local/qwt-6.0.0-svn/features" in the shell ( assuming it is a bash ), where you execute qmake.

Or if you want to have it permanently you can set it as qmake property: "qmake -set QMAKEFEATURES /usr/local/qwt-6.0.0-svn/features".
Ah, many thanks, now it works using the "CONFIG += qwt" option