# Link directories

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To integrate the Meeting SDK for Linux, import the Video SDK libraries, initialize the SDK, authenticate the SDK, authenticate the users, and finally enable logging.

## Import the Video SDK libraries

As mentioned in the [Verify Files](/docs/meeting-sdk/linux/get-started/download#verify-files) section, the header folder `./h`, the `lib*so` libraries, and the `./qt_libs` dependency library are the needed header files and libraries to build an SDK Application.

Assume your project has a file structure similar to this one, and see how you can include and link the SDK into your project.

```plaintext
demo
├── include
│   └── h
└── lib
    └── qt_libs
    └── lib*so
```

```plaintext
# Link directories
link_directories(
    ${CMAKE_SOURCE_DIR}/lib
    ${CMAKE_SOURCE_DIR}/lib/qt_libs
    ${CMAKE_SOURCE_DIR}/lib/qt_libs/Qt/lib
)

include_directories(
    ${CMAKE_SOURCE_DIR}/include
    ${CMAKE_SOURCE_DIR}/include/h

)

# Create a symbolic link
execute_process(COMMAND ln -s libmeetingsdk.so libmeetingsdk.so.1
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/lib/zoom_meeting_sdk
)
```

## Initialize the SDK

To initialize the SDK, add setup information to the `InitParam` structure.

1. Set the `strWebDomain` and the `strSupportUrl` to "https://zoom.us".
2. Set the `emLanguageID`. In this example, we set the language ID to English.
3. Set the `enableGenerateDump` to either `true` or `false`. `True` means that the SDK log will be generated.
   UI.
4. Call the `InitSDK` method to initialize the SDK.

```cpp
ZOOM_SDK_NAMESPACE::InitParam initParam;
initParam.strWebDomain = "https://zoom.us";
initParam.strSupportUrl = "https://zoom.us";
	//set language id
initParam.emLanguageID = ZOOM_SDK_NAMESPACE::LANGUAGE_English;
initParam.enableLogByDefault = true;
initParam.enableGenerateDump = true;
    err = ZOOM_SDK_NAMESPACE::InitSDK(initParam);
```

Check the error returned from `InitSDK` method. If the error is anything other than `SDKERR_SUCCESS`, the SDK initialization did not succeed. Check the returned [error code](/docs/meeting-sdk/linux/error-codes/) for more information.

## Authenticate the SDK

To authenticate the SDK and start and join meetings, you will need to authenticate the meeting.

-   A [JWT token](/docs/sdk/meeting-sdk/auth) to authenticate the app
-   **For individual users, a Zoom Access Key (ZAK)** - send a **GET** request to the https://api.zoom.us/v2/users/{userId}/token with `type="zak"` and pass it to the SDK with [JoinMeetingParam4WithoutLogin](https://marketplacefront.zoom.us/sdk/meeting/linux/meeting__service__interface_8h.html#a7b819101ef0be761aa5a9165885a59ba)'s [userZAK](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_join_param4_without_login.html#a83c6513e5d1822596445622d19f514af) or [StartMeetingParamsWithoutLogin](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_start_param4_without_login.html)'s [userZAK](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_start_param4_without_login.html#a0af5af5f511af4a8f66ecd31f8361844).
-   **For apps that need to join the meeting as individual users, an OnBehalf Of (OBF) token** - send a GET request to https://api.zoom.us/v2/users/{userId}/token with `type="onbehalf"` and pass it to the SDK with [JoinMeetingParam4WithoutLogin](https://marketplacefront.zoom.us/sdk/meeting/linux/meeting__service__interface_8h.html#a7b819101ef0be761aa5a9165885a59ba)'s [onBehalfToken](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_join_param4_without_login.html#aa3c0a12a7f76a735d1a6bf4aef227ead).

To authenticate the SDK, populate the `AuthContext` structure.

-   Set the `jwt_token` with the generated JWT.
-   Call `SDKAuth` to authenticate the SDK.

```cpp
ZOOM_SDK_NAMESPACE::AuthContext param;
param.jwt_token = "jwt Token";
ZOOM_SDK_NAMESPACE::IAuthService* _auth_service;
ZOOM_SDK_NAMESPACE::CreateAuthService(&_auth_service);
ZOOM_SDK_NAMESPACE::SDKError err = _auth_service->SDKAuth(param);
```

## Authenticate the users

Before you start using the Meeting SDK for Linux, authenticate the user first.

-   To log in an end user, use a **Zoom Access Key (ZAK)** token - send a **GET** request to the https://api.zoom.us/v2/users/{userId}/token with `type="zak"` and pass it to the SDK with [JoinMeetingParam4WithoutLogin](https://marketplacefront.zoom.us/sdk/meeting/linux/meeting__service__interface_8h.html#a7b819101ef0be761aa5a9165885a59ba)'s [userZAK](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_join_param4_without_login.html#a83c6513e5d1822596445622d19f514af).

-   To log in apps that need to join the meeting as individual users, an On Behalf Of (OBF) token - send a GET request to https://api.zoom.us/v2/users/{userId}/token with `type="onbehalf"` and pass it to the SDK with [JoinMeetingParam4WithoutLogin](https://marketplacefront.zoom.us/sdk/meeting/linux/meeting__service__interface_8h.html#a7b819101ef0be761aa5a9165885a59ba)'s [onBehalfToken](https://marketplacefront.zoom.us/sdk/meeting/linux/structtag_join_param4_without_login.html#aa3c0a12a7f76a735d1a6bf4aef227ead).
-   To log out an end user, use the `LogOut()` method.

## Enable logging

To enable logging, set the `enableLogByDefault` parameter in your `InitParam` object to `true`.

```cpp
initParam.enableLogByDefault = true;
```

Once you've initialized the log feature, the log file appears under `/home/{username}/.zoomsdk`.

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