Can someone make a closed source application that calls something that is under GPL? Example: say someone makes a new kernel, and it is closed source (and proprietrary). They make it x window system compatible and port gnome (or kde) to their os. They include gnome as the window system, and include the (possibly modified) source code in the disk (or make it avalible). Is this ok? Or say someone makes app1 (closed source), that uses app2 (by API call or system call wondering for both). app2 is under GPL and they put it on a disk with app1 and make the source for app2 avalible.
Are either of these ok with GPL or LGPL?
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