OpenCL development files

 OpenCL (Open Computing Language) is a multivendor open standard for
 general-purpose parallel programming of heterogeneous systems that include
 CPUs, GPUs and other processors.
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 This package provides the development files: headers and libraries.
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 It also ensures that the ocl-icd ICD loader is installed so its additional
 features (compared to the OpenCL norm) can be used: .pc file, ability to
 select an ICD without root privilege, etc.