Dear Sir, I am using RTLINUX 2.0.36 release 1.1 with gcc v2.7.2.3. I am trying to use the function sqrt in a RT-Task, but I get the following error while attempting to insert the module but other (like sin or cos )fp functions are ok. ./rt_process.o: unresolved symbol __isnan ./rt_process.o: unresolved symbol fputs ./rt_process.o: unresolved symbol errno ./rt_process.o: unresolved symbol __errno__location ./rt_process.o: unresolved symbol _IO_stderr_ Does anybody know how to solve this? Thanks, ps linker options include "-static" and "-lm" switches. aGan SimSek www.altinay.com.tr --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/