Re: GCC 5 compatibility problems: GCC 4.10?

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On Mon, May 11, 2015 at 02:37:07PM +0100, David Howells wrote:
> Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
> 
> > > > I'm encountering a few problems with GCC 5 due to code that fails to
> > > > work with GCC major releases above 4.  In particular, there are at least
> > > > problems with the kernel
> > >
> > > fedora's kernel builds, can you be more specific about the problems you're 
> > > experiencing?
> > 
> > Kernels older than 3.18 don't build, which is a pain if you're bisecting
> > a kernel bug introduced before 3.18.
> 
> Any particular arch?  And what's the error?

I bet it is the linux/include/compiler*.h stuff.

In any case, supposedly you can just use
gcc -U__GNUC__ -U__GNUC_MINOR__ -U__GNUC_PATCHLEVEL__ -D__GNUC__=4 -D__GNUC_MINOR__=10 -D__GNUC_PATCHLEVEL__=0
instead of gcc, you don't need any hacks for that from the distro.

	Jakub
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