special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
----------- cut COPYING -----------
It gives the possibility to not distribute compiler and other preprocessing tools.
It looks like one can make a preprocessor or even one's own compiler (with one's syntax) which will be used for kernel building. But it's not required to distribute this compiler. So I can distribute linux kernel source code modified this way but no one will be able to build it. Is it ok?