I know, I also use GPL on some on my projects. But for a library project, GPL is quite an unusual choice. I don't know any commonly used library, that has such

I know, I also use GPL on some on my projects. But for a library project, GPL is quite an unusual choice. I don't know any commonly used library, that has such a restrictive license. Most of them use LGPL, Apache, MIT, BSD or something similar. Otherwise your library is commonly doomed to be a stillbirth. Ghostscript is one example, a lot of users ran into legal trouble using it.