vendor: OpenCV 5.0.0 snapshot at 40738fb16ceddb5fb3fea747585f7ce6abb0605b

2026-08-22 00:10:33 +08:00
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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
+```