There is an error while building tslib.

usr/include/x86_64-linux-gnu/bits/fcntl2.h:51:24: error: call to

That because of new version gcc:

vim tests/ts_calibrate.c :

                if ((calfile = getenv("TSLIB_CALIBFILE")) != NULL) {

                        cal_fd = open (calfile, O_CREAT | O_RDWR, 0777);

                } else {

                        cal_fd = open ("/etc/pointercal", O_CREAT | O_RDWR, 0777);

                }