kfunk added a comment.
Alright, I now see why this is no longer required under Linux: https://stackoverflow.com/a/32649327/592636 > Since glibc 2.17, the library linking -rt is no longer required. > The clock_* are now part of the main C library. You can see the change history of glibc 2.17 where this change was done explains the reason for this change: REPOSITORY R111 KSysguard Library REVISION DETAIL https://phabricator.kde.org/D5955 To: kfunk, jriddell Cc: plasma-devel, ZrenBot, spstarr, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart, lukas