-to compile, but people who wish to distribute binaries must do so
-under the terms of the GNU GPL. This may make sense for some
-GPL-avoiding free software projects; people can still make proprietary
-programs from your code, provided that they make some provision to
-replace adns with something whose copyright allows proprietary
-versions.
+to compile (provided it's under a GPL-compatible licence), but people
+who wish to distribute binaries must do so under the terms of the GNU
+GPL. This may make sense for some GPL-avoiding free software
+projects; people can still make proprietary programs from your code,
+provided that they make some provision to replace adns with something
+whose copyright allows proprietary versions.