AcquireMagickOpenCLEnv  347 magick/opencl.c     defaultCLEnv = AcquireMagickOpenCLEnv();
AcquireMagickOpenCLEnv 2132 magick/opencl.c   clEnv=AcquireMagickOpenCLEnv();
AcquireMagickOpenCLEnv   36 magick/opencl.h   MagickCLEnv AcquireMagickOpenCLEnv();