An error on library ofr

In my application I’ve a Real Time Clock. On startup, I read the date, time and so on, then calculate the second since 1st of 1970 … but on link I obtain an error: tx_time_get is not present. I use version 4.0 and GreenHill 2.1

Has your application linked to tx.a library? It looks like in the linking can’t get it to be referenced to.

Yes, it is linked. and as I write before, tx_time_get work well, only tx_time_set is right compiled, but unknown from linker.