undefined reference to `esp_ble_gap_ext_adv_set_params'

[kenbsherman]

The project is a modification of the gatt server example.

When compliing get this error:

D:/Expressif/gattserver/main/gatts_demo.c:964: undefined reference to `esp_ble_gap_ext_adv_set_params'

`esp_ble_gap_ext_adv_set_params' is a member of esp_gap_ble_api.h and I have an include in the c file that is referencing this.

How do I resolve this?