鸿蒙平台开启vulkan编译ncnn

[cugxchen]

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鸿蒙平台开启vulkan编译ncnn，链接报错

环境配置： export PATH=/ohos-sdk/linux/native/sysroot/usr/include:/ohos-sdk/linux/native/sysroot/usr/lib/aarch64-linux-ohos:${PATH} 编译指令： cmake -DOHOS_STL=c++_static -DOHOS_ARCH=arm64-v8a -DOHOS_PLATFORM=OHOS -DCMAKE_TOOLCHAIN_FILE=/ohos-sdk/linux/native/build/cmake/ohos.toolchain.cmake -DNCNN_VULKAN=ON -DNCNN_OPENMP=OFF -DCMAKE_BUILD_TYPE=Release .. make -j4

报错信息： ld.lld: error: unable to find library -lOSDependent

[cugxchen]

错误原因，交叉编译必须使用鸿蒙sdk自带的cmake，否则不认识OHOS_ARCH和OHOS_PLATFORM参数，因此编译不过。 改为 /ohos-sdk/linux/native/build-tools/cmake/bin/cmake -DOHOS_STL=c++_static -DOHOS_ARCH=arm64-v8a -DOHOS_PLATFORM=OHOS -DCMAKE_TOOLCHAIN_FILE=/ohos-sdk/linux/native/build/cmake/ohos.toolchain.cmake -DNCNN_VULKAN=ON -DNCNN_OPENMP=OFF -DCMAKE_BUILD_TYPE=Release .. make -j4 编译通过

[nihui]

https://github.com/Tencent/ncnn/pull/5474

[nihui]

https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-harmonyos-with-cross-compiling