Add pocl_jll for CPU-based OpenCL testing

- Add pocl_jll to extras for testing
- Update test/utils.jl to load pocl_jll when GROUP=OpenCL
- OpenCL backend requires pocl_jll to provide CPU-based OpenCL drivers
- Without pocl_jll, OpenCL has no platforms/devices available

Author: ChrisRackauckas

Project.toml

@@ -15,7 +15,6 @@ KernelAbstractions = "63c18a36-062a-441e-b654-da1e3ab1ce7c"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 LinearSolve = "7ed4a6bd-45f5-4d41-b270-4a48e9bafcae"
 MuladdMacro = "46d2c3a1-f734-5fdb-9937-b9b9aeba4221"
-OpenCL = "08131aa3-fb12-5dee-8b74-c09406e224a2"
 Parameters = "d96e819e-fc66-5662-9728-84c9c7592b0a"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 RecursiveArrayTools = "731186ca-8d62-57ce-b412-fbd966d074cd"
@@ -31,6 +30,7 @@ AMDGPU = "21141c5a-9bdb-4563-92ae-f87d6854732e"
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 Metal = "dde4c033-4e86-420c-a63e-0dd931031962"
+OpenCL = "08131aa3-fb12-5dee-8b74-c09406e224a2"
 oneAPI = "8f75cd03-7ff8-4ecb-9b8f-daf728133b1b"
 
 [extensions]
@@ -76,3 +76,4 @@ Metal = "dde4c033-4e86-420c-a63e-0dd931031962"
 OpenCL = "08131aa3-fb12-5dee-8b74-c09406e224a2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 oneAPI = "8f75cd03-7ff8-4ecb-9b8f-daf728133b1b"
+pocl_jll = "627d6b7a-bbe6-5189-83e7-98cc0a5aeadd"

test/utils.jl

@@ -12,7 +12,7 @@ elseif GROUP == "Metal"
     using Metal
     Metal.MetalBackend()
 elseif GROUP == "OpenCL"
-    using OpenCL
+    using OpenCL, pocl_jll
     OpenCL.OpenCLBackend()
 elseif GROUP == "JLArrays"
     using JLArrays