Re: [PATCH/RFC] Move generated files to include/generated

Sam Ravnborg
2009-07-22T20:33:48Z

On Wed, Jul 22, 2009 at 03:50:15PM +0200, Arnd Bergmann wrote:
> On Wednesday 22 July 2009, Amerigo Wang wrote:
> > On Tue, Jul 21, 2009 at 11:10:40PM +0200, Sam Ravnborg wrote:
> > >In 2.6.30 we introduced support for adding generated
> > >files to a dedicated directory named "include/generated".
> >
> > Personally, I don't like this, I hate to see
> > #include <generated/foo.h>
>
> I think that moving the generated files to a common location
> makes a lot of sense, but it seems easier to move them
> to include/generated/linux/ or even to (generated/linux/) and
> then add -Iinclude/generated/ to the gcc command line so
> you don't need to actually change all the users.

To put some numbers on this..
utsrelease.h - incuded in 19 files
autoconf.h - included in 0 files
bounds.h - included in 2 files
compile.h - included in 1 file
asm-offsets.h - included in 240 files
version.h - included in 184 files

So the only relevant files to discuss here is asm-offsets.h
and version.h.

We cannot break "#include <linux/version.h>" because
that would break each and every external module.

The solution to this is a simple file:
cat include/linux/version.h
#include <generated.version.h>

For asm-offsets.h the patch-set create an architecture
specific asm-offsets.h that include the generated version.
But I would prefer to see this redone so they include
the generated version directly.
This would also document that asm-offsets.h is a generated file.

The amount of includes pr arch is listed below - not a huge deal to fix up.

alpha 5
arm 30
avr32 3
blackfin 9
cris 3
frv 5
h8300 2
ia64 15
m32r 0
m68k 6
m68knommu 5
microblaze 5
mips 25
mn10300 6
parisc 14
powerpc 43
s390 13
sh 8
sparc 6
um 2
x86 24
xtensa 8

Sam