# Debug using xds-gdb from command line ## XDS remote debugging mode First the project you want to debug must be declared on an xds-server and this project may also has been built using using XDS (see [Create your first AGL application](./4_build-first-app.html) for more details). So to debug it you need to have the XDS agent - server chain in place and you also need the project and sdk unique id. You can find these IDs in project page of XDS dashboard or you can get them from command line using the `--list` option. This option lists all existing projects ID: ```bash xds-gdb --list ``` Now to refer your project, just set `XDS_PROJECT_ID` and `XDS_SDK_ID` variables. You are now ready to use `xds-gdb` to for example cross debug your project. Here is an example to build and debug a project based on CMakefile and [AGL app-templates](https://git.automotivelinux.org/apps/app-templates/): ```bash # Go into your project directory (for example helloworld-native-application) cd ~/xds-workspace git clone https://github.com/iotbzh/helloworld-native-application.git cd helloworld-service # Declare your project on xds-server # <for now, you can only do this step using xds HTML dashboard (see xds-server doc)> # Define XDS config cat <<EOF >./xds-config.env #optional if not default value: XDS_AGENT_URL=http://localhost:8800 XDS_PROJECT_ID=IW7B4EE-DBY4Z74_myProject XDS_SDK_ID=poky-agl_aarch64_4.0.1 EOF # Tell to xds-cli and xds-gdb which is your config file export XDS_CONFIG=../xds-gen3.conf # Create a new build directory mkdir build && cd build # Start remote cross build xds-cli exec -- cmake -DRSYNC_TARGET=root@myTarget .. xds-cli exec -- make xds-cli exec -- make remote-target-populate # Start debugging xds-gdb -x target/gdb-on-root@myTarget.ini ``` <!-- note --> **Note:** : [helloworld-native-application](https://github.com/iotbzh/helloworld-native-application) project is an AGL project based on [app-templates](https://git.automotivelinux.org/apps/app-templates/) (included as a git submodule). This CMake templating, used to develop application with the AGL Application Framework, will automatically generate makefile rules (eg. `remote-target-populate`) or scripts (eg. `build/target/xxx` scripts). For more info about app-template, please refer to [this documentation](http://docs.automotivelinux.org/docs/devguides/en/dev/reference/sdk-devkit/docs/part-2/2_4-Use-app-templates.html). <!-- endnote --> ## Native debugging To enable native debugging mode, you need to define `XDS_NATIVE_GDB` variable.