diff --git a/gpuctypes/opencl.py b/gpuctypes/opencl.py
index ef829c4..39c05bf 100644
--- a/gpuctypes/opencl.py
+++ b/gpuctypes/opencl.py
@@ -117,7 +117,8 @@ class Union(ctypes.Union, AsDictMixin):
 
 
 _libraries = {}
-_libraries['libOpenCL.so'] = ctypes.CDLL('/usr/lib/x86_64-linux-gnu/libOpenCL.so')
+#_libraries['libOpenCL.so'] = ctypes.CDLL('/usr/lib/x86_64-linux-gnu/libOpenCL.so')
+_libraries['libOpenCL.so'] = ctypes.CDLL('/System/Library/Frameworks/OpenCL.framework/Versions/A/OpenCL')
 c_int128 = ctypes.c_ubyte*16
 c_uint128 = c_int128
 void = None
@@ -320,15 +321,15 @@ class struct__cl_name_version(Structure):
 clReleaseDevice = _libraries['libOpenCL.so'].clReleaseDevice
 clReleaseDevice.restype = cl_int
 clReleaseDevice.argtypes = [cl_device_id]
-clSetDefaultDeviceCommandQueue = _libraries['libOpenCL.so'].clSetDefaultDeviceCommandQueue
-clSetDefaultDeviceCommandQueue.restype = cl_int
-clSetDefaultDeviceCommandQueue.argtypes = [cl_context, cl_device_id, cl_command_queue]
-clGetDeviceAndHostTimer = _libraries['libOpenCL.so'].clGetDeviceAndHostTimer
-clGetDeviceAndHostTimer.restype = cl_int
-clGetDeviceAndHostTimer.argtypes = [cl_device_id, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_uint64)]
-clGetHostTimer = _libraries['libOpenCL.so'].clGetHostTimer
-clGetHostTimer.restype = cl_int
-clGetHostTimer.argtypes = [cl_device_id, ctypes.POINTER(ctypes.c_uint64)]
+#clSetDefaultDeviceCommandQueue = _libraries['libOpenCL.so'].clSetDefaultDeviceCommandQueue
+#clSetDefaultDeviceCommandQueue.restype = cl_int
+#clSetDefaultDeviceCommandQueue.argtypes = [cl_context, cl_device_id, cl_command_queue]
+#clGetDeviceAndHostTimer = _libraries['libOpenCL.so'].clGetDeviceAndHostTimer
+#clGetDeviceAndHostTimer.restype = cl_int
+#clGetDeviceAndHostTimer.argtypes = [cl_device_id, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_uint64)]
+#clGetHostTimer = _libraries['libOpenCL.so'].clGetHostTimer
+#clGetHostTimer.restype = cl_int
+#clGetHostTimer.argtypes = [cl_device_id, ctypes.POINTER(ctypes.c_uint64)]
 clCreateContext = _libraries['libOpenCL.so'].clCreateContext
 clCreateContext.restype = cl_context
 clCreateContext.argtypes = [ctypes.POINTER(ctypes.c_int64), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_device_id)), ctypes.CFUNCTYPE(None, ctypes.POINTER(ctypes.c_char), ctypes.POINTER(None), ctypes.c_uint64, ctypes.POINTER(None)), ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
@@ -344,12 +345,12 @@ class struct__cl_name_version(Structure):
 clGetContextInfo = _libraries['libOpenCL.so'].clGetContextInfo
 clGetContextInfo.restype = cl_int
 clGetContextInfo.argtypes = [cl_context, cl_context_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
-clSetContextDestructorCallback = _libraries['libOpenCL.so'].clSetContextDestructorCallback
-clSetContextDestructorCallback.restype = cl_int
-clSetContextDestructorCallback.argtypes = [cl_context, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_context), ctypes.POINTER(None)), ctypes.POINTER(None)]
-clCreateCommandQueueWithProperties = _libraries['libOpenCL.so'].clCreateCommandQueueWithProperties
-clCreateCommandQueueWithProperties.restype = cl_command_queue
-clCreateCommandQueueWithProperties.argtypes = [cl_context, cl_device_id, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_int32)]
+#clSetContextDestructorCallback = _libraries['libOpenCL.so'].clSetContextDestructorCallback
+#clSetContextDestructorCallback.restype = cl_int
+#clSetContextDestructorCallback.argtypes = [cl_context, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_context), ctypes.POINTER(None)), ctypes.POINTER(None)]
+#clCreateCommandQueueWithProperties = _libraries['libOpenCL.so'].clCreateCommandQueueWithProperties
+#clCreateCommandQueueWithProperties.restype = cl_command_queue
+#clCreateCommandQueueWithProperties.argtypes = [cl_context, cl_device_id, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_int32)]
 clRetainCommandQueue = _libraries['libOpenCL.so'].clRetainCommandQueue
 clRetainCommandQueue.restype = cl_int
 clRetainCommandQueue.argtypes = [cl_command_queue]
@@ -368,15 +369,15 @@ class struct__cl_name_version(Structure):
 clCreateImage = _libraries['libOpenCL.so'].clCreateImage
 clCreateImage.restype = cl_mem
 clCreateImage.argtypes = [cl_context, cl_mem_flags, ctypes.POINTER(struct__cl_image_format), ctypes.POINTER(struct__cl_image_desc), ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
-clCreatePipe = _libraries['libOpenCL.so'].clCreatePipe
-clCreatePipe.restype = cl_mem
-clCreatePipe.argtypes = [cl_context, cl_mem_flags, cl_uint, cl_uint, ctypes.POINTER(ctypes.c_int64), ctypes.POINTER(ctypes.c_int32)]
-clCreateBufferWithProperties = _libraries['libOpenCL.so'].clCreateBufferWithProperties
-clCreateBufferWithProperties.restype = cl_mem
-clCreateBufferWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), cl_mem_flags, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
-clCreateImageWithProperties = _libraries['libOpenCL.so'].clCreateImageWithProperties
-clCreateImageWithProperties.restype = cl_mem
-clCreateImageWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), cl_mem_flags, ctypes.POINTER(struct__cl_image_format), ctypes.POINTER(struct__cl_image_desc), ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
+#clCreatePipe = _libraries['libOpenCL.so'].clCreatePipe
+#clCreatePipe.restype = cl_mem
+#clCreatePipe.argtypes = [cl_context, cl_mem_flags, cl_uint, cl_uint, ctypes.POINTER(ctypes.c_int64), ctypes.POINTER(ctypes.c_int32)]
+#clCreateBufferWithProperties = _libraries['libOpenCL.so'].clCreateBufferWithProperties
+#clCreateBufferWithProperties.restype = cl_mem
+#clCreateBufferWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), cl_mem_flags, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
+#clCreateImageWithProperties = _libraries['libOpenCL.so'].clCreateImageWithProperties
+#clCreateImageWithProperties.restype = cl_mem
+#clCreateImageWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), cl_mem_flags, ctypes.POINTER(struct__cl_image_format), ctypes.POINTER(struct__cl_image_desc), ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
 clRetainMemObject = _libraries['libOpenCL.so'].clRetainMemObject
 clRetainMemObject.restype = cl_int
 clRetainMemObject.argtypes = [cl_mem]
@@ -392,21 +393,21 @@ class struct__cl_name_version(Structure):
 clGetImageInfo = _libraries['libOpenCL.so'].clGetImageInfo
 clGetImageInfo.restype = cl_int
 clGetImageInfo.argtypes = [cl_mem, cl_image_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
-clGetPipeInfo = _libraries['libOpenCL.so'].clGetPipeInfo
-clGetPipeInfo.restype = cl_int
-clGetPipeInfo.argtypes = [cl_mem, cl_pipe_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
+#clGetPipeInfo = _libraries['libOpenCL.so'].clGetPipeInfo
+#clGetPipeInfo.restype = cl_int
+#clGetPipeInfo.argtypes = [cl_mem, cl_pipe_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
 clSetMemObjectDestructorCallback = _libraries['libOpenCL.so'].clSetMemObjectDestructorCallback
 clSetMemObjectDestructorCallback.restype = cl_int
 clSetMemObjectDestructorCallback.argtypes = [cl_mem, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_mem), ctypes.POINTER(None)), ctypes.POINTER(None)]
-clSVMAlloc = _libraries['libOpenCL.so'].clSVMAlloc
-clSVMAlloc.restype = ctypes.POINTER(None)
-clSVMAlloc.argtypes = [cl_context, cl_svm_mem_flags, size_t, cl_uint]
-clSVMFree = _libraries['libOpenCL.so'].clSVMFree
-clSVMFree.restype = None
-clSVMFree.argtypes = [cl_context, ctypes.POINTER(None)]
-clCreateSamplerWithProperties = _libraries['libOpenCL.so'].clCreateSamplerWithProperties
-clCreateSamplerWithProperties.restype = cl_sampler
-clCreateSamplerWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_int32)]
+#clSVMAlloc = _libraries['libOpenCL.so'].clSVMAlloc
+#clSVMAlloc.restype = ctypes.POINTER(None)
+#clSVMAlloc.argtypes = [cl_context, cl_svm_mem_flags, size_t, cl_uint]
+#clSVMFree = _libraries['libOpenCL.so'].clSVMFree
+#clSVMFree.restype = None
+#clSVMFree.argtypes = [cl_context, ctypes.POINTER(None)]
+#clCreateSamplerWithProperties = _libraries['libOpenCL.so'].clCreateSamplerWithProperties
+#clCreateSamplerWithProperties.restype = cl_sampler
+#clCreateSamplerWithProperties.argtypes = [cl_context, ctypes.POINTER(ctypes.c_uint64), ctypes.POINTER(ctypes.c_int32)]
 clRetainSampler = _libraries['libOpenCL.so'].clRetainSampler
 clRetainSampler.restype = cl_int
 clRetainSampler.argtypes = [cl_sampler]
@@ -425,9 +426,9 @@ class struct__cl_name_version(Structure):
 clCreateProgramWithBuiltInKernels = _libraries['libOpenCL.so'].clCreateProgramWithBuiltInKernels
 clCreateProgramWithBuiltInKernels.restype = cl_program
 clCreateProgramWithBuiltInKernels.argtypes = [cl_context, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_device_id)), ctypes.POINTER(ctypes.c_char), ctypes.POINTER(ctypes.c_int32)]
-clCreateProgramWithIL = _libraries['libOpenCL.so'].clCreateProgramWithIL
-clCreateProgramWithIL.restype = cl_program
-clCreateProgramWithIL.argtypes = [cl_context, ctypes.POINTER(None), size_t, ctypes.POINTER(ctypes.c_int32)]
+#clCreateProgramWithIL = _libraries['libOpenCL.so'].clCreateProgramWithIL
+#clCreateProgramWithIL.restype = cl_program
+#clCreateProgramWithIL.argtypes = [cl_context, ctypes.POINTER(None), size_t, ctypes.POINTER(ctypes.c_int32)]
 clRetainProgram = _libraries['libOpenCL.so'].clRetainProgram
 clRetainProgram.restype = cl_int
 clRetainProgram.argtypes = [cl_program]
@@ -443,12 +444,12 @@ class struct__cl_name_version(Structure):
 clLinkProgram = _libraries['libOpenCL.so'].clLinkProgram
 clLinkProgram.restype = cl_program
 clLinkProgram.argtypes = [cl_context, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_device_id)), ctypes.POINTER(ctypes.c_char), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_program)), ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_program), ctypes.POINTER(None)), ctypes.POINTER(None), ctypes.POINTER(ctypes.c_int32)]
-clSetProgramReleaseCallback = _libraries['libOpenCL.so'].clSetProgramReleaseCallback
-clSetProgramReleaseCallback.restype = cl_int
-clSetProgramReleaseCallback.argtypes = [cl_program, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_program), ctypes.POINTER(None)), ctypes.POINTER(None)]
-clSetProgramSpecializationConstant = _libraries['libOpenCL.so'].clSetProgramSpecializationConstant
-clSetProgramSpecializationConstant.restype = cl_int
-clSetProgramSpecializationConstant.argtypes = [cl_program, cl_uint, size_t, ctypes.POINTER(None)]
+#clSetProgramReleaseCallback = _libraries['libOpenCL.so'].clSetProgramReleaseCallback
+#clSetProgramReleaseCallback.restype = cl_int
+#clSetProgramReleaseCallback.argtypes = [cl_program, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_program), ctypes.POINTER(None)), ctypes.POINTER(None)]
+#clSetProgramSpecializationConstant = _libraries['libOpenCL.so'].clSetProgramSpecializationConstant
+#clSetProgramSpecializationConstant.restype = cl_int
+#clSetProgramSpecializationConstant.argtypes = [cl_program, cl_uint, size_t, ctypes.POINTER(None)]
 clUnloadPlatformCompiler = _libraries['libOpenCL.so'].clUnloadPlatformCompiler
 clUnloadPlatformCompiler.restype = cl_int
 clUnloadPlatformCompiler.argtypes = [cl_platform_id]
@@ -464,9 +465,9 @@ class struct__cl_name_version(Structure):
 clCreateKernelsInProgram = _libraries['libOpenCL.so'].clCreateKernelsInProgram
 clCreateKernelsInProgram.restype = cl_int
 clCreateKernelsInProgram.argtypes = [cl_program, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_kernel)), ctypes.POINTER(ctypes.c_uint32)]
-clCloneKernel = _libraries['libOpenCL.so'].clCloneKernel
-clCloneKernel.restype = cl_kernel
-clCloneKernel.argtypes = [cl_kernel, ctypes.POINTER(ctypes.c_int32)]
+#clCloneKernel = _libraries['libOpenCL.so'].clCloneKernel
+#clCloneKernel.restype = cl_kernel
+#clCloneKernel.argtypes = [cl_kernel, ctypes.POINTER(ctypes.c_int32)]
 clRetainKernel = _libraries['libOpenCL.so'].clRetainKernel
 clRetainKernel.restype = cl_int
 clRetainKernel.argtypes = [cl_kernel]
@@ -476,12 +477,12 @@ class struct__cl_name_version(Structure):
 clSetKernelArg = _libraries['libOpenCL.so'].clSetKernelArg
 clSetKernelArg.restype = cl_int
 clSetKernelArg.argtypes = [cl_kernel, cl_uint, size_t, ctypes.POINTER(None)]
-clSetKernelArgSVMPointer = _libraries['libOpenCL.so'].clSetKernelArgSVMPointer
-clSetKernelArgSVMPointer.restype = cl_int
-clSetKernelArgSVMPointer.argtypes = [cl_kernel, cl_uint, ctypes.POINTER(None)]
-clSetKernelExecInfo = _libraries['libOpenCL.so'].clSetKernelExecInfo
-clSetKernelExecInfo.restype = cl_int
-clSetKernelExecInfo.argtypes = [cl_kernel, cl_kernel_exec_info, size_t, ctypes.POINTER(None)]
+#clSetKernelArgSVMPointer = _libraries['libOpenCL.so'].clSetKernelArgSVMPointer
+#clSetKernelArgSVMPointer.restype = cl_int
+#clSetKernelArgSVMPointer.argtypes = [cl_kernel, cl_uint, ctypes.POINTER(None)]
+#clSetKernelExecInfo = _libraries['libOpenCL.so'].clSetKernelExecInfo
+#clSetKernelExecInfo.restype = cl_int
+#clSetKernelExecInfo.argtypes = [cl_kernel, cl_kernel_exec_info, size_t, ctypes.POINTER(None)]
 clGetKernelInfo = _libraries['libOpenCL.so'].clGetKernelInfo
 clGetKernelInfo.restype = cl_int
 clGetKernelInfo.argtypes = [cl_kernel, cl_kernel_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
@@ -491,9 +492,9 @@ class struct__cl_name_version(Structure):
 clGetKernelWorkGroupInfo = _libraries['libOpenCL.so'].clGetKernelWorkGroupInfo
 clGetKernelWorkGroupInfo.restype = cl_int
 clGetKernelWorkGroupInfo.argtypes = [cl_kernel, cl_device_id, cl_kernel_work_group_info, size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
-clGetKernelSubGroupInfo = _libraries['libOpenCL.so'].clGetKernelSubGroupInfo
-clGetKernelSubGroupInfo.restype = cl_int
-clGetKernelSubGroupInfo.argtypes = [cl_kernel, cl_device_id, cl_kernel_sub_group_info, size_t, ctypes.POINTER(None), size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
+#clGetKernelSubGroupInfo = _libraries['libOpenCL.so'].clGetKernelSubGroupInfo
+#clGetKernelSubGroupInfo.restype = cl_int
+#clGetKernelSubGroupInfo.argtypes = [cl_kernel, cl_device_id, cl_kernel_sub_group_info, size_t, ctypes.POINTER(None), size_t, ctypes.POINTER(None), ctypes.POINTER(ctypes.c_uint64)]
 clWaitForEvents = _libraries['libOpenCL.so'].clWaitForEvents
 clWaitForEvents.restype = cl_int
 clWaitForEvents.argtypes = [cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
@@ -587,24 +588,24 @@ class struct__cl_name_version(Structure):
 clEnqueueBarrierWithWaitList = _libraries['libOpenCL.so'].clEnqueueBarrierWithWaitList
 clEnqueueBarrierWithWaitList.restype = cl_int
 clEnqueueBarrierWithWaitList.argtypes = [cl_command_queue, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMFree = _libraries['libOpenCL.so'].clEnqueueSVMFree
-clEnqueueSVMFree.restype = cl_int
-clEnqueueSVMFree.argtypes = [cl_command_queue, cl_uint, ctypes.POINTER(None) * 0, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_command_queue), ctypes.c_uint32, ctypes.POINTER(ctypes.POINTER(None)), ctypes.POINTER(None)), ctypes.POINTER(None), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMMemcpy = _libraries['libOpenCL.so'].clEnqueueSVMMemcpy
-clEnqueueSVMMemcpy.restype = cl_int
-clEnqueueSVMMemcpy.argtypes = [cl_command_queue, cl_bool, ctypes.POINTER(None), ctypes.POINTER(None), size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMMemFill = _libraries['libOpenCL.so'].clEnqueueSVMMemFill
-clEnqueueSVMMemFill.restype = cl_int
-clEnqueueSVMMemFill.argtypes = [cl_command_queue, ctypes.POINTER(None), ctypes.POINTER(None), size_t, size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMMap = _libraries['libOpenCL.so'].clEnqueueSVMMap
-clEnqueueSVMMap.restype = cl_int
-clEnqueueSVMMap.argtypes = [cl_command_queue, cl_bool, cl_map_flags, ctypes.POINTER(None), size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMUnmap = _libraries['libOpenCL.so'].clEnqueueSVMUnmap
-clEnqueueSVMUnmap.restype = cl_int
-clEnqueueSVMUnmap.argtypes = [cl_command_queue, ctypes.POINTER(None), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
-clEnqueueSVMMigrateMem = _libraries['libOpenCL.so'].clEnqueueSVMMigrateMem
-clEnqueueSVMMigrateMem.restype = cl_int
-clEnqueueSVMMigrateMem.argtypes = [cl_command_queue, cl_uint, ctypes.POINTER(ctypes.POINTER(None)), ctypes.POINTER(ctypes.c_uint64), cl_mem_migration_flags, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMFree = _libraries['libOpenCL.so'].clEnqueueSVMFree
+#clEnqueueSVMFree.restype = cl_int
+#clEnqueueSVMFree.argtypes = [cl_command_queue, cl_uint, ctypes.POINTER(None) * 0, ctypes.CFUNCTYPE(None, ctypes.POINTER(struct__cl_command_queue), ctypes.c_uint32, ctypes.POINTER(ctypes.POINTER(None)), ctypes.POINTER(None)), ctypes.POINTER(None), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMMemcpy = _libraries['libOpenCL.so'].clEnqueueSVMMemcpy
+#clEnqueueSVMMemcpy.restype = cl_int
+#clEnqueueSVMMemcpy.argtypes = [cl_command_queue, cl_bool, ctypes.POINTER(None), ctypes.POINTER(None), size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMMemFill = _libraries['libOpenCL.so'].clEnqueueSVMMemFill
+#clEnqueueSVMMemFill.restype = cl_int
+#clEnqueueSVMMemFill.argtypes = [cl_command_queue, ctypes.POINTER(None), ctypes.POINTER(None), size_t, size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMMap = _libraries['libOpenCL.so'].clEnqueueSVMMap
+#clEnqueueSVMMap.restype = cl_int
+#clEnqueueSVMMap.argtypes = [cl_command_queue, cl_bool, cl_map_flags, ctypes.POINTER(None), size_t, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMUnmap = _libraries['libOpenCL.so'].clEnqueueSVMUnmap
+#clEnqueueSVMUnmap.restype = cl_int
+#clEnqueueSVMUnmap.argtypes = [cl_command_queue, ctypes.POINTER(None), cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
+#clEnqueueSVMMigrateMem = _libraries['libOpenCL.so'].clEnqueueSVMMigrateMem
+#clEnqueueSVMMigrateMem.restype = cl_int
+#clEnqueueSVMMigrateMem.argtypes = [cl_command_queue, cl_uint, ctypes.POINTER(ctypes.POINTER(None)), ctypes.POINTER(ctypes.c_uint64), cl_mem_migration_flags, cl_uint, ctypes.POINTER(ctypes.POINTER(struct__cl_event)), ctypes.POINTER(ctypes.POINTER(struct__cl_event))]
 clGetExtensionFunctionAddressForPlatform = _libraries['libOpenCL.so'].clGetExtensionFunctionAddressForPlatform
 clGetExtensionFunctionAddressForPlatform.restype = ctypes.POINTER(None)
 clGetExtensionFunctionAddressForPlatform.argtypes = [cl_platform_id, ctypes.POINTER(ctypes.c_char)]
diff --git a/test/test_opencl.py b/test/test_opencl.py
new file mode 100644
index 0000000..036f14c
--- /dev/null
+++ b/test/test_opencl.py
@@ -0,0 +1,35 @@
+import ctypes
+import unittest
+# TODO: the import has to not fail if some of the methods are missing
+import gpuctypes.opencl as cl
+
+def check(status):
+  if status != 0: raise RuntimeError(f"OpenCL Error {status}")
+
+# TODO: this should be in the header
+CL_DEVICE_TYPE_DEFAULT = 1
+
+class TestOpenCL(unittest.TestCase):
+  @classmethod
+  def setUpClass(cls):
+    num_platforms = ctypes.c_uint32()
+    platform_array = (cl.cl_platform_id * 1)()
+    check(cl.clGetPlatformIDs(1, platform_array, ctypes.byref(num_platforms)))
+    assert num_platforms.value > 0, "didn't get platform"
+
+    device_array = (cl.cl_device_id * 1)()
+    num_devices = ctypes.c_uint32()
+    check(cl.clGetDeviceIDs(platform_array[0], CL_DEVICE_TYPE_DEFAULT, 1, device_array, ctypes.byref(num_devices)))
+    assert num_devices.value > 0, "didn't get device"
+
+    status = ctypes.c_int32()
+    context = cl.clCreateContext(None, 1, device_array[0], ctypes.cast(None, cl.clCreateContext.argtypes[3]), None, ctypes.byref(status))
+    check(status.value)
+    assert context is not None
+
+  def test_malloc(self):
+    #cl.clCreateBuffer()
+    pass
+
+if __name__ == '__main__':
+  unittest.main()