esp-idf/examples/build_system/cmake/import_lib/README.md

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# Import Third-Party CMake Library Example
This example demonstrates how to import third-party CMake libraries.
## Example Flow
[tinyxml2](https://github.com/leethomason/tinyxml2) is a
a small C++ XML parser. It is imported, without modification, for use in the project's `main` component (see the `main` component's [CMakeLists.txt](main/CMakeLists.txt)). To demonstrate the library being used, a sample XML is embedded into the project.
This sample XML is then read and parsed later on using `tinyxml2`.
### Output
```
I (317) example: Setting up...
I (317) example: Copying sample XML to filesystem...
I (647) example: Reading XML file
I (657) example: Read XML data:
<?xml version="1.0" encoding="UTF-8"?>
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>
I (667) example: Parsed XML data:
To: Tove
From: Jani
Heading: Reminder
Body: Don't forget me this weekend!
I (677) example: Example end
```
---
There is a discussion on importing third-party CMake libraries in the programming guide under `API Guides` -> `Build System` -> `Using Third-Party CMake Projects with Components`