* join the two things on either side, so we can do symbol
* substitution within the name, regular C ## joins the pp-tokens,
* not their final values.
*/
#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
* join the two things on either side, so we can do symbol
* substitution within the name, regular C ## joins the pp-tokens,
* not their final values.
*/
#define PNG_EXPORTA(ordinal, type, name, args, attributes)\