ARM-software/ComputeLibrary conflicts with kleidiai

[BillyONeal]

After microsoft/vcpkg-tool#1768 vcpkg now correctly diagnoses when packages conflict with each other, which has exposed a conflict between OpenVINO on ARM and KleidiAI.

See https://github.com/microsoft/vcpkg/tree/master/ports/kleidiai and https://github.com/microsoft/vcpkg/blob/4acadb7d732e662bbf130c4849be6d3a0aa6f6b9/ports/openvino/portfile.cmake#L77-L91

[morgolock]

Hi @BillyONeal

ACL has a copy of KleidiAI in its third_party/kleidiai folder, but this is only used internally during the build. Those sources get compiled into ACL’s objects and libraries, but they are not exposed in the install step. If you look at the install rules in the SCons scripts, they only cover ACL’s own headers (arm_compute, support, utils, etc.), libraries, and binaries. No KAI headers or CMake files are ever installed into the prefix.

Because of this, ACL itself cannot create a conflict in vcpkg, it never installs include/kai/* or anything similar. If a layout collision is being reported by vcpkg, that must be caused by another port (for example, OpenVINO’s port) installing KleidiAI into the global prefix. From ACL’s side there’s nothing to change.

I'll discuss this with the OpenVINO team. I think it would be best for you to raise an issue in the OV project.

Hope this helps