I am using Qt4 to build an application and for some reason I want to keep it proprietary. Qt4 is released under LGPL, does that force me to release the code to my application. I ask this question because I am finding it difficult to understand the LGPL license.
2 Answers
Yes.
"The main difference between the GPL and the LGPL is that the latter allows the work to be linked with (in the case of a library, 'used by') a non-(L)GPLed program, regardless of whether it is free software or proprietary software.
Source:Wikipedia
In addition to @user64152's answer I have to add one more thing. If along with proprietary you also intend to make a commercial product and modify the Qt libraries, you have to buy the Qt Commercial License in order to be able to sell your product.
