How to fix ESP-IDF fatal error: esp_crt_bundle.h: No such file or directory

Problem

While compiling your ESP-IDF project, you get an error message like this:

/home/user/my-project/managed_components/espressif__rmaker_common/src/esp-mqtt/esp-mqtt-glue.c:47:10: fatal error: esp_crt_bundle.h: No such file or directory
   47 | #include <esp_crt_bundle.h>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.

Solution

Either make Rainermaker not use the certificate bundle, or enable the certificate bundle component in your project’s sdkconfig file.

Make Rainmaker not use the certificate bundle (recommended)

In your project’s sdkconfig file, set the following:

CONFIG_ESP_RMAKER_USE_CERT_BUNDLE=n
CONFIG_ESP_RMAKER_MQTT_USE_CERT_BUNDLE=n

Enable the certificate bundle component

This eats up a bunch of flash space, so my recommendation is to only do this if you really need it.

Enable the certificate bundle component in your project’s sdkconfig file:

CONFIG_ESP_CRT_BUNDLE=y