注：基于openEuler 22.03 LTS SP1系统（联网环境）。

1 安装conda

参考 鲲鹏Linux环境安装conda参考

2 安装python3和依赖

dnf -y install python3 python3-devel

3 获取wenet源码

wget https://github.com/wenet-e2e/wenet/archive/refs/tags/v2.2.1.tar.gz

mv v2.2.1.tar.gz wenet-2.2.1.tar.gz

tar xf wenet-2.2.1.tar.gz

4 创建conda环境

/root/miniconda3/bin/conda create -n wenet python=3.9

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/root/miniconda3/bin/activate wenet

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5 进入wenet源码路径并安装依赖

cd wenet-2.2.1/

pip3 install -r requirements.txt​

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​​​再次执行pip3 install -r requirements.txt可以查看依赖安装路径

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6 编译libtorch

1）安装pytorch

/root/miniconda3/bin/conda install pytorch cpuonly -c pytorch

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2）进入libtorch路径

cd runtime/libtorch

3）创建build编译路径并进入执行cmake编译

mkdir build

cd build/

cmake ..

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4）重命名libtorch-src路径下的lib文件夹（默认获取的libtorch中的so均为x86_64架构，无法在鲲鹏aarch64架构下使用）

cd ../fc_base/libtorch-src

mv lib lib-bak

5）创建新的lib文件夹并将aarch64的so拷贝进去

mkdir lib

cp -r /usr/local/lib64/python3.9/site-packages/torch/lib/* lib/

6）拷贝libtorch_cpu.so依赖的so库文件到lib路径

cp -r /usr/local/lib64/python3.9/site-packages/torch.libs/* lib/

7）拷贝重命名的lib-bak文件夹下的libkineto.a到lib路径下

cp lib-bak/libkineto.a lib/

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8）执行cmake编译

cd ../../build/

cmake --build .

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编译的二进制在bin/路径下，然后执行make install安装

7 FAQ

1、执行cmake --build .报错“No rule to make target '../fc_base/libtorch-src/lib/libkineto.a', needed by 'api/libwenet_api.so'. Stop.”，具体报错如下

gmake[2]: *** No rule to make target '../fc_base/libtorch-src/lib/libkineto.a', needed by 'api/libwenet_api.so'. Stop. 

gmake[2]: Leaving directory '/root/wenet/runtime/libtorch/build' 

gmake[1]: *** [CMakeFiles/Makefile2:2317: api/CMakeFiles/wenet_api.dir/all] Error 2 

gmake[1]: Leaving directory '/root/wenet/runtime/libtorch/build' 

gmake: *** [Makefile:152: all] Error 2 

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解决方法：

将重命名的lib-bak文件夹下的libkineto.a到lib路径下

cp ../fc_base/libtorch-src/lib-bak/libkineto.a ../fc_base/libtorch-src/lib/

2、执行cmake --build .报错“warning: libgomp-d22c30c5.so.1.0.0, needed by /root/wenet/runtime/libtorch/fc_base/libtorch-src/lib/libtorch_cpu.so, not found”等错误，具体报错如下：

[ 85%] Linking CXX executable label_checker_main 

/usr/bin/ld: warning: libgomp-d22c30c5.so.1.0.0, needed by /root/wenet/runtime/libtorch/fc_base/libtorch-src/lib/libtorch_cpu.so, not found (try using -rpath or -rpath-link) 

/usr/bin/ld: warning: libarm_compute-873be09e.so, needed by /root/wenet/runtime/libtorch/fc_base/libtorch-src/lib/libtorch_cpu.so, not found (try using -rpath or -rpath-link) 

/usr/bin/ld: warning: libarm_compute_graph-ab857ce5.so, needed by /root/wenet/runtime/libtorch/fc_base/libtorch-src/lib/libtorch_cpu.so, not found (try using -rpath or -rpath-link) 

/usr/bin/ld: warning: libarm_compute_core-0793f69d.so, needed by /root/wenet/runtime/libtorch/fc_base/libtorch-src/lib/libtorch_cpu.so, not found (try using -rpath or -rpath-link) 

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解决方法：

拷贝libtorch_cpu.so依赖的so库文件到lib路径

cp -r /usr/local/lib64/python3.9/site-packages/torch.libs/* ../fc_base/libtorch-src/lib/

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8 参考

1. https://wenet.org.cn/wenet/install.html#install-prebuilt-python-package
2. https://pytorch.org/get-started/locally/