Good news, the Libraries I created are also compilable at AROS x64, so this learns us two things. First it also works on 64Bit (also with 64Bit freepascal) and Second it also works on ABIv1 (64bit AROS is ABIv1 only). The testlib worked just without any additional actions. sqlite3.library needed some work, seems some C Linklibs are changed so the Makefile libs had to change a lot. The compilation worked well then, but the example program crashed. Seems it always crash when it tries to convert a float to a string, if I read the double by Hand and use the pascal routine to convert it to string it works without problems. Hmm strange problem, especially because the rest is working without any problems. Because of the previous problems with AROS64… it’s maybe a just a AROS64 bug. so I changed my example source 😛 and now it works perfectly.