Dependencies#

The cmake/ directory contains helper modules for managing external dependencies.

Dependencies.cmake is the main entry point that uses CPM.cmake (CMake Package Manager) to download and configure dependencies. CPM caches downloads in ~/.cache/CPM by default.

To use a custom cache location:

cmake --preset clang-debug -DCPM_SOURCE_CACHE=/custom/path

Dependency Modules#

  • Acar.cmake : ACAR (Aerial CUDA Accelerated RAN) dependency

  • Cuda.cmake : CUDA toolkit and compute architecture detection

  • MathDx.cmake : NVIDIA Math libraries (cuFFTDx, cuSolverDx)

  • Doca.cmake : NVIDIA DOCA (Data Center Infrastructure On a Chip Architecture)

  • Dpdk.cmake : Data Plane Development Kit (DPDK)

  • GDRCopy.cmake : GPUDirect RDMA copy library

  • Nvinfer.cmake : TensorRT inference engine

ACAR#

ACAR (Aerial CUDA Accelerated RAN) is managed via cmake/Acar.cmake using CPM.

Download behavior

By default, ACAR is automatically downloaded during CMake configuration to _deps/aerial_sdk-src in the build directory.

Custom repository URL (optional)

Use ACAR_REPO to point to a custom git repository:

cmake --preset clang-debug -DACAR_REPO="https://github.com/NVIDIA/aerial-cuda-accelerated-ran.git"

Default repository: https://github.com/NVIDIA/aerial-cuda-accelerated-ran.git

Custom download location (optional)

Use ACAR_SOURCE_DIR to specify a custom directory for downloading:

cmake --preset clang-debug -DACAR_SOURCE_DIR=/path/to/acar

Use cases:

  • Share a single source between multiple build trees

  • Place the source in a specific location

  • Use a pre-existing checkout

Skip download and use existing source (optional)

Use SKIP_ACAR_DOWNLOAD to use an existing source:

cmake --preset clang-debug \
  -DSKIP_ACAR_DOWNLOAD=ON \
  -DACAR_SOURCE_DIR=/path/to/existing/acar

Note: When SKIP_ACAR_DOWNLOAD=ON, ACAR_SOURCE_DIR must point to a valid source directory containing CMakeLists.txt.

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