Arduino board manager choice for M5Camera001 ?

[jarkman]

I'm trying to build the Arduino example code
https://github.com/espressif/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServer
to run on an M5CAMERA001.

The board manager doesn't offer me an option for M5camera - I can choose M5UnitCAM or M5TimerCAM but both of those get me an error:
Compilation error: text section exceeds available space in board

This is with
#define CAMERA_MODEL_M5STACK_PSRAM
but I've tried various alternatives without success.

How should I be building for this camera ?

Thanks!