Cross Compiling Samples

The following sections show how to cross-compile TensorRT samples for AArch64 QNX and Linux platforms under x86_64 Linux. This is an advanced topic for users who need to build samples for embedded platforms.

Prerequisites

Complete the following steps before cross-compiling for any target platform.

1. Install the CUDA cross-platform toolkit for your target and set the environment variables:

   $ export CUDA_INSTALL_DIR=/usr/local/cuda
   $ export TRT_LIBPATH=/path/to/tensorrt/lib
   

   Note

   If you install TensorRT from the network repository, install the cuda-toolkit-X-Y and cuda-cross-<arch>-X-Y packages first to ensure all CUDA dependencies are available.

2. Install the TensorRT cross-compilation Debian packages for your target:

   • QNX AArch64: tensorrt-dev-cross-qnx

   • Linux AArch64: tensorrt-dev-cross-aarch64

   • Linux SBSA: tensorrt-dev-cross-sbsa

   Note

   You can skip this step if you use the tar file release, which already includes the cross-compile libraries.

3. (Linux AArch64 and SBSA only) Install the AArch64 cross-compiler:

   $ sudo apt-get install g++-aarch64-linux-gnu
   

Building Samples for QNX AArch64

Download the QNX toolchain, set the environment variable, and build:

$ export QNX_BASE=/path/to/your/qnx/toolchain
$ cd <cloned_tensorrt_dir>
$ mkdir build && cd build
$ cmake .. \
  -DTRT_LIB_DIR=$TRT_LIBPATH \
  -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/cmake_qnx.toolchain \
  -DBUILD_SAMPLES=ON
$ make -j$(nproc)

Building Samples for Linux AArch64

Build for Linux AArch64 platforms (for example, Jetson devices):

$ cd <cloned_tensorrt_dir>
$ mkdir -p build && cd build
$ cmake .. \
  -DTRT_LIB_DIR=$TRT_LIBPATH \
  -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/cmake_aarch64_cross.toolchain \
  -DBUILD_SAMPLES=ON
$ make -j$(nproc)

Building Samples for Linux SBSA

Build for Linux SBSA (Server Base System Architecture) platforms:

$ cd <cloned_tensorrt_dir>
$ mkdir -p build && cd build
$ cmake .. \
  -DTRT_LIB_DIR=$TRT_LIBPATH \
  -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/cmake_sbsa_cross.toolchain \
  -DBUILD_SAMPLES=ON
$ make -j$(nproc)