> Have you considered what they do for GNU bison? Thinking: I could apply GPL, and then add a line like "In addition to the GPL license granted as above an unlimited license is granted to use the result obtained by compiling this file (maybe in combination with other files) into an executable format (.hex file or equivalent)." Now a remaining problem is: what whould prevent a person from enhancing the library, removing that scentence from the library text, and distributing the result? In other words: the GPL is carefully worded to be 'sticky'. Such a simple scentence is not. IMHO the same problem applies to the Bison case. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics