Hi, ================================= Starting A2 system. Unix.Dlsym: entry 'clock_gettime' not found Unix.Dlsym: entry 'clock_getres' not found GC mode : metadata LinuxA2 Gen. 32-bit, Apr 19 2023 2026/07/05 06:04 Trap 11 (Segmentation violation) ================================= Clock access in an older Linux differs from contemporary Linux. I wonder whether Linux.Unix.Mod can determine what is available before invoking something certain to fail. Then invoke something which works. Linux.Unix.Mod has this. Dlsym( libc, "clock_gettime", ADDRESSOF(clock_gettime) ); ... clock_gettime- : PROCEDURE {C} (clk_id: INTEGER; tp: ADDRESS): INTEGER; Ideas? Thanks, ... P.L. -- mobile: +1 778 951 5147 VoIP: +1 778 508 0020 <= decommissioning Bcc: peter at e a s t h o p e dot c a projects: en.wikibooks.org/wiki/User:PeterEasthope