integrated optional (experimentl) CLBlast support

CL/Utils/File.h

@@ -0,0 +1,42 @@
+#pragma once
+
+// OpenCL Utils includes
+#include "OpenCLUtils_Export.h"
+
+// OpenCL includes
+#include <CL/cl.h>
+
+// read all the text file contents securely in ANSI C89
+// return pointer to C-string with file contents
+// can handle streams with no known size and no support for fseek
+// based on https://stackoverflow.com/questions/14002954/ by Nominal Animal
+UTILS_EXPORT
+char* cl_util_read_text_file(const char* const filename, size_t* const length,
+                             cl_int* const error);
+
+// read all the binary file contents securely in ANSI C89
+// return pointer to file contents
+// can handle streams with no known size and no support for fseek
+// based on https://stackoverflow.com/questions/14002954/ by Nominal Animal
+UTILS_EXPORT
+unsigned char* cl_util_read_binary_file(const char* const filename,
+                                        size_t* const length,
+                                        cl_int* const error);
+
+// write binaries of OpenCL compiled program
+// binaries are written as separate files for each device
+// with file name "(program_file_name)_(name of device).bin"
+// based on variant of Logan
+// http://logan.tw/posts/2014/11/22/pre-compile-the-opencl-kernel-program-part-2/
+UTILS_EXPORT
+cl_int cl_util_write_binaries(const cl_program program,
+                              const char* const program_file_name);
+
+// read binaries of OpenCL compiled program
+// from files of file names "(program_file_name)_(name of device).bin"
+UTILS_EXPORT
+cl_program cl_util_read_binaries(const cl_context context,
+                                 const cl_device_id* const devices,
+                                 const cl_uint num_devices,
+                                 const char* const program_file_name,
+                                 cl_int* const error);