If your linux distro is based on debian, e.g. ububtu, linux mint etc... open a terminal and copy/paste (or type) the following 3 lines: wget https://sourceforge.net/projects/skylendar/files/installskylendar.sh bash installskylendar.sh echo terminated Then enter the root password when asked and press Y if you want to download the archive. If not on ubuntu, ask chatgpt. It will provide you with a list of commnads in order to compile and install skylendar on your distro. Example for fedora: linux fedora: provide me with a bash script in order to compile and install skylendar-5.1.2pn with clang-20. Install with skydmin -i and installpg -p <path to postgis.sql> Important note about the "extra time" bug: the workaround of this bug needed the "extra time" set to 1.00. It seems to be a gcc problem and also can be found on the previous versions of clang. However, on clang-20, the bug seems to be fixed, that's why I posted on sourceforge the tar archive of skylendar compiled with clang-20. Don't forget to set the extra time to 0.0 if still issues or questions, run bash installskylendar.sh -d and report below skylendar@yahoo.com