Dear Arthur, you were right. Everything worked well. I had to do this: * sudo apt-get install autotools-dev * sudo apt-get install autoconf * sudo apt-get install libgtksourceview-4-dev Reading the error messages and installing the missing dependencies ALWAYS helps hi hi. The thing is done but anyway XPad ist not there. How do I start it? Typing "xpad" in terminal says "bash: /usr/bin/xpad: No such file or directory". Can you please help me again? Best regards and 1'000 thanks!! Mit freundlichen Grüßen! Albrecht DIETRICH Am Kreuzbuck 5 77955 Ettenheimweiler G e r m a n y Mobile: +49 (0)176 321 39 442 Fix: +49 (0)7822 - 51 45 Am 21.04.24 um 09:36 schrieb Arthur Borsboom: > Maybe: > > sudo apt-get install autotools-dev > > Source:https://askubuntu.com/questions/430706/installing-autotools- > autoconf-on-ubuntu > > > On Sat, 20 Apr 2024 at 17:43, Arthur Borsboom