what's the logistics behind "make headers_install"?

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  i used to think i understood how "make headers_install" created the
set of sanitized headers, but now i'm not so sure.

  since you can run that immediately after running "make distclean",
the sanitized headers are clearly arch-independent and don't depend on
doing any preliminary configuration.  but after i run it, as a single
example, i can see i have the generated header file
"usr/include/asm/page.h".  so the obvious question is -- what caused
that header file to be added to the sanitized headers?

  i thought that process was controlled exclusively through the
Kbuild* files, and the only Kbuild file that refers to page.h is:

$ grep "page\.h" $(find . -name Kbuild*)
./include/asm-frv/Kbuild:unifdef-y += page.h

is *that* the cause?  if so, why, after i delete that line, do i
*still* get page.h being added?  what am i misunderstanding here?

rday

-- 
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

http://fsdev.net/wiki/index.php?title=Main_Page
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