I’d like to measure task execution time by using uxTaskGetSystemState in task.h So I defined configUSE_TRACE_FACILITY and check the included path of task.h build clean and rebuild… but link error occurred as below. what should I check? c:/users/jjs/.platformio/packages/toolchain-xtensa-esp32/bi…

You’ll have to use GitHub - espressif/esp32-arduino-lib-builder to regenerate the .a libraries anew with your wanted target configuration, then them to replace those stored in C:\Users\<user>\.platformio\packages\framework-arduinoespressif32\tools\sdk\esp32\lib. At least libfreertos.a.