# Optional: Build LiteRT Source: [https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html](https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html) Note: LiteRT and its libraries are built as part of the Qualcomm Linux build along with the Qualcomm Intelligent Multimedia Product (QIMP) SDK. Therefore, building Qualcomm Linux is optional. You can build Qualcomm Linux in certain scenarios, such as when you want to change the LiteRT library version. To recompile LiteRT as part of the Qualcomm Linux build along with the QIMP SDK, see [Qualcomm Linux Build Guide](bundle/publicresource/topics/80-70017-254). ## Build Qualcomm Linux Source: [https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html](https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html) You can build Qualcomm Linux using any of the following methods: - eSDK - GUI-based Qualcomm^®^ Software Center (QSC) Launcher - QSC CLI - GitHub workflow All build methods require you to select a product ID and distribution. Based on the selected product ID and distribution, LiteRT is built as part of the QIMP SDK. ### Build with eSDK For instructions, see [Download and install eSDK](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-51/install-sdk.html#download-and-install-esdk). The eSDK is an installer generated from the Qualcomm Linux image. It provides a complete Yocto environment that helps you to synchronize, modify, compile, and install applications and open-source plug-ins. ### Build with GUI-based QSC Launcher For instructions, see [Build with QSC Launcher](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-254/build_from_source_qsc_gui_intro.html). Based on your access level, download one of the following distributions to compile LiteRT. Table : Distribution based on user access level | Access level | Distribution to use | | --- | --- | | Public developer (unregistered) | Qualcomm\_Linux.SPF.1.0|TEST|DEVICE|PB\_QIMPSDK | | Licensed developer with authorized access | Qualcomm\_Linux.SPF.1.0|AP|Standard|OEM|NM\_QIMPSDK | ### Build with QSC CLI For instructions, see [Build with QSC CLI](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-254/build_from_source_QSC_CLI.html). Based on your access level, download one of the following distributions to compile LiteRT. Table : Distribution based on user access level | Access level | Distribution to use | | --- | --- | | Public developer (unregistered) | Qualcomm\_Linux.SPF.1.0|TEST|DEVICE|PB\_QIMPSDK | | Licensed developer with authorized access | Qualcomm\_Linux.SPF.1.0|AP|Standard|OEM|NM\_QIMPSDK | ### Build with GitHub workflow For instructions, see [GitHub workflow](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-254/build_from_source_github_intro.html). The instructions help you to do the following: - Set up an environment on the host machine to build Qualcomm Linux. - Clone the Qualcomm Linux code. - Set up the build environment and compile Qualcomm Linux. To synchronize the Qualcomm Linux code and clone the QIMP SDK and LiteRT sources along with it, do the following: 1. To synchronize the Qualcomm Linux code, do the following: 1. Get the release ID from the [Qualcomm manifest](https://github.com/quic-yocto/qcom-manifest). For example, `qcom-6.6.38-QLI.1.2-Ver.1.0_qim-product-sdk-1.1.1.xml`. 2. Use the release ID to run the repo init command as shown in the following example: # cd to directory where you have sufficient storage to create your workspaces mkdir cd Copy to clipboard repo init -u https://github.com/quic-yocto/qcom-manifest -b qcom-linux-kirkstone -m qcom-6.6.38-QLI.1.2-Ver.1.0_qim-product-sdk-1.1.1.xmlCopy to clipboard 3. To fetch the release from the Qualcomm manifest, run the following command: repo syncCopy to clipboard 2. Before compiling the Qualcomm Linux build, add EXTRALAYERS to include the QIMP SDK, which contains LiteRT. To add EXTRALAYERS, run the following commands: export EXTRALAYERS="meta-qcom-qim-product-sdk"Copy to clipboard MACHINE= DISTRO=qcom-wayland QCOM_SELECTED_BSP= source setup-environmentCopy to clipboard MACHINE= DISTRO=qcom-wayland QCOM_SELECTED_BSP= source setup-environment # Example, MACHINE=qcs6490-rb3gen2-vision-kit DISTRO=qcom-wayland QCOM_SELECTED_BSP=custom source setup-environment # source setup-environment: Sets the environment, creates the build directory build-qcom-wayland, # and enters into build-qcom-wayland directory.Copy to clipboard export LC_ALL="en_US.UTF-8"Copy to clipboard Note: If the `diffstat chrpath` and `liblz4-tool`packages are not preinstalled, run the following commands to install them: - sudo apt install diffstat chrpathCopy to clipboard - sudo apt install -y zstd liblz4-toolCopy to clipboard bitbake qcom-multimedia-imageCopy to clipboard # To build just Qualcomm IM Product SDK bitbake qcom-qim-product-sdk Copy to clipboard These commands build the LiteRT libraries as part of the QIMP SDK. All the LiteRT libraries and binaries are packaged into a zip file in the `.ipk` format and are available with the system images to be flashed onto the device. ## Install LiteRT Source: [https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html](https://docs.qualcomm.com/doc/80-70017-54/topic/build-qualcomm-linux-and-install-tensorflow-lite-runtime.html) To install LiteRT, flash the images. The flashing process installs user space images, the QIMP SDK, LiteRT artifacts, and dependencies. For flashing instructions, see [Flash images](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-254/flash_images.html). The flashing process installs the following: - All user space images along with the QIMP SDK - The following LiteRT artifacts: - libtensorflowlite\_c.so - multimodel\_label\_image - label\_image - inf\_diff\_run\_eval - image\_classify\_run\_eval - benchmark\_model - object\_detect\_run\_eval - LiteRT dependencies, such as Qualcomm AI Engine direct SDK libraries and binaries By default, LiteRT compiles the following delegates: - XNNPACK delegate - GPU delegate - QNN delegate Last Published: Jan 06, 2025 [Previous Topic Sample applications](https://docs.qualcomm.com/bundle/publicresource/80-70017-54/topics/sample-applications.md) [Next Topic References](https://docs.qualcomm.com/bundle/publicresource/80-70017-54/topics/references.md)