Re: [PATCH] kbuild: Disallow GCC 4.1.0 / 4.1.1

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* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> 
> 
> On Fri, 2 Jan 2009, Linus Torvalds wrote:
> > 
> > I think this is wrong.
> > 
> > Just move the check into <linux/compiler-gcc4.h>
> 
> In fact, looking at that whole mess, I redid it all. It was disgusting 
> how conditionals in gcc4.h needed to double-check that __GNUC__ really 
> was 4 (rather than something bigger), which largely negated the whole 
> nice clean compiler version separation.
> 
> I pushed out my preferred version, which fixes up the whole thing. The 
> gcc4 header file now only gets included for __GNUC__ == 4, and when we 
> ever see a __GNUC__ of 5, it will automatically DTRT and try to include 
> <linux/compiler-gcc5.h> instead of #4.
> 
> And then the check in gcc4.h for 4.1.0 and 4.1.1 is much simplified.  
> The two patches I pushed out add functionality, but don't actually add 
> any new lines (the first simplification patch removes more lines than it 
> adds, and the second one that adds the __weak bug test adds as mahy 
> lines as the cleanup removed).
> 
> And it all looks more logical too, imho.

yeah, agreed, much cleaner.

The gcc3 check for gcc 3.0 and 3.1 can be pushed into gcc3 as well - not 
sure whether you fixed that. (i fixed it in the patch i just sent - but i 
didnt notice the gcc5 mess in gcc4.h that you fixed)

	Ingo
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