Update the documentation for the GenerateCppResourceFile module

cmake/modules/GenerateCppResourceFile.cmake

@@ -5,14 +5,17 @@
 # Currently only implemented for Unix.  Requires the 'xxd'
 # tool to be installed.
 #
-# INPUT_FILE : The name of the binary data file to be converted into a C++
-#              source file.
+# TARGET_NAME : The name of the target to generate
 #
-# CPP_FILE   : The path of the C++ source file to be generated.
-#              See the documentation for xxd for information on
-#              the structure of the generated source file.
+# INPUT_DIR   : The directory containing the input binary data file
 #
-# INPUT_FILE_TARGET : The name of the target which generates INPUT_FILE
+# INPUT_FILE  : The name of the binary data file in ${INPUT_DIR} to be converted into a C++
+#               source file.  The name of the input file will be used as the basis for the
+#               symbols in the generated C++ file referring to the data buffer and its length.
+#
+# CPP_FILE    : The path of the C++ source file to be generated.
+#               See the documentation for xxd for information on
+#               the structure of the generated source file.
 #
 function (generate_cpp_resource_file TARGET_NAME INPUT_DIR INPUT_FILE CPP_FILE)
 	add_custom_command(OUTPUT ${CPP_FILE} COMMAND cd ${INPUT_DIR} && xxd -i ${INPUT_FILE} ${CPP_FILE}