[PATCH, CFT] Fix bootstrap with in-tree ISL

[Tobias Grosser]

On 04/01/2015 05:09 PM, Bernhard Reutner-Fischer wrote:
> Hi,
>
> Trying to build config-list.mk for current trunk.
> The box is a stable debian (7.8 it seems) so the OS' ISL is too old
> thus i was attempting to use in-tree ISL.
>
> When using an in-tree ISL gcc attempts to determine if it is recent
> enough and AFAIU fails to do so since the system's ISL (which we will not use)
> might be too old and the in-tree ISL is not yet built.
>
> This results in HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE being not
> set and thus compilation of graphite-isl-ast-to-gimple.c fails with
> "template with C linkage".
>
> The attached seems to get me past compilation of
> graphite-isl-ast-to-gimple.c with config-list.mk for e.g.
> alpha-linux-gnu
>
> I'm scheduling a proper regstrap on x86_64-linux-gnu for a native
> compiler but this will take days to start i fear.
> So.. if somebody has spare cycles.. :)

Hi Bernhard,

I can not give an OK for the makefile/configure changes, but in general 
this seems to be the right direction.

Thanks,
Tobias