Re: [PATCH] cross-sparse

[Linus Torvalds]

On Fri, 18 Jun 2004, Geert Uytterhoeven wrote:
> 
> IIRC, actually the first error I got when using the native sparse was that it
> couldn't find stdarg.h.

Ok.

> And even the non-native sparse doesn't know about architecture-specific defines
> like __mc68000__, causing some code paths being wrong. Guess I have to replace
> them by e.g. CONFIG_M68K.

No, this is handled by fixing up the expected defines in the

	arch/xxx/Makefile

thing, ie x86 has this:

	CHECK := $(CHECK) -D__i386__=1

exactly because sparse is architecture-agnostic. Same goes for 64-bit 
issues (sparse defaults to 32-bit types regardless of what the native 
format is), so a 64-bit platform like ppc64 would do:

	CHECK := $(CHECK) -m64 -D__powerpc__=1

where that "-m64" is the magic flag to sparse for a 64-bit compile 
environment.

But your stdarg.h issue is certainly valid. I'd really like for sparse to 
be _totally_ independent of the native compiler install, and I guess we 
could do something like

	CHECK := $(CHECK) -I$(shell $(CC) -print-file-name=include)

or similar to get this part right too, but then sparse would be hard to 
use stand-alone without the Makefile magic. Hmm.

		Linus
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