f4334277
 Hu Chunming
提交3rdparty
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# Arm semihosting
This folder contain a toolchain file and a couple of examples for
building OpenCV based applications that can run in an [Arm
semihosting](https://developer.arm.com/documentation/100863/latest)
setup.
OpenCV can be compiled to target a semihosting platform as follows:
```
cmake ../opencv/ \
-DCMAKE_TOOLCHAIN_FILE=../opencv/platforms/semihosting/aarch64-semihosting.toolchain.cmake \
-DSEMIHOSTING_TOOLCHAIN_PATH=/path/to/baremetal-toolchain/bin/ \
-DBUILD_EXAMPLES=ON -GNinja
```
A barematel toolchain for targeting aarch64 semihosting can be found
[here](https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads),
under `aarch64-none-elf`.
The code of the examples in the `norm` and `histogram` folders can be
executed with qemu in Linux userspace:
```
qemu-aarch64 ./bin/example_semihosting_histogram
qemu-aarch64 ./bin/example_semihosting_norm
```
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