I've recently been playing with cnlohr's latest project (https://github.com/cnlohr/esp8266ws2812i2s) but can't use the <time.h> gmtime and mktime functions.
As I could use them with sprite_tm's makefile for the httpd project, I'd be curious to know which flags I should specify to get the linker to find these functions?
I've been searching without success...
Thanks!