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update native build instructions for ACL on Jetson. (#5764)

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George Wu 2020-11-10 23:10:59 -08:00 committed by GitHub
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BUILD.md
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@ -547,29 +547,24 @@ onnxruntime_perf_test
onnxruntime_test_all
```
#### Build Instructions (Jetson Nano)
#### Native Build Instructions (validated on Jetson Nano and Jetson Xavier)
1. Build ACL Library (skip if already built)
```
cd ~
git clone https://github.com/Arm-software/ComputeLibrary.git
git clone -b v20.02 https://github.com/Arm-software/ComputeLibrary.git
cd ComputeLibrary
sudo apt install scons
sudo apt install g++-arm-linux-gnueabihf
sudo apt-get install -y scons g++-arm-linux-gnueabihf
scons -j8 arch=arm64-v8a Werror=1 debug=0 asserts=0 neon=1 opencl=1 examples=1 build=native
```
2. Set environment variables to set include directory and shared object library path.
2. Cmake is needed to build ONNX Runtime. Because the minimum required version is 3.13,
it is necessary to build CMake from source. Download Unix/Linux sources from https://cmake.org/download/
and follow https://cmake.org/install/ to build from source. Version 3.17.5 and 3.18.4 have been tested on Jetson.
3. Build onnxruntime with --use_acl flag with one of the supported ACL version flags. (ACL_1902 | ACL_1905 | ACL_1908 | ACL_2002)
```
export CPATH=~/ComputeLibrary/include/:~/ComputeLibrary/
export LD_LIBRARY_PATH=~/ComputeLibrary/build/
```
3. Build onnxruntime with --use_acl flag
```
./build.sh --use_acl
```
To use a library outside the normal environment you can set a custom path by using --acl_home and --acl_libs tags that defines the path to the ComputeLibrary directory and the build directory respectively.
```
./build.sh --use_acl --acl_home /path/to/ComputeLibrary --acl_libs /path/to/build
./build.sh --config RelWithDebInfo --use_acl ACL_2002 --update --build --build_wheel --parallel --acl_home ~/ComputeLibrary --acl_libs ~/ComputeLibrary/build
```
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