wasm-micro-runtime/build-scripts/esp-idf/README.md
liang.he 159b69da38
Update cmake min to 3.14 (#4175)
3.14 is used and tested by linux mini-product

to fix

```
CMake Error at CMakeLists.txt:4 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
```
2025-04-02 07:13:53 +08:00

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Markdown

# wasm-micro-runtime as ESP-IDF component
You can build an ESP-IDF project with wasm-micro-runtime as a component:
- Make sure you have the ESP-IDF properly installed and setup
- In particular have the following paths set:
- `WAMR_PATH` to point to your wasm-micro-runtime repository
- `IDF_PATH` to point to your ESP-IDF
- `source $IDF_PATH/export.sh`
- Create a new project, e.g.: `idf.py create-project wamr-hello`
- In the newly created project folder edit the `CMakeList.txt`:
```
cmake_minimum_required(VERSION 3.14)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
set (COMPONENTS ${IDF_TARGET} main freertos esptool_py wamr)
list(APPEND EXTRA_COMPONENT_DIRS "$ENV{WAMR_PATH}/build-scripts/esp-idf")
project(wamr-hello)
```
- Develop your project in it's `main` component folder.
You can find an example [here](../../product-mini/platforms/esp-idf).
- Set target platform: `idf.py set-target esp32c3`
- Build: `idf.py build`
- Flash: `idf.py flash`
- Check the output: `idf.py monitor`