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Re: [Build, Graphite] PR64017 - support ISL-0.14 (gcc/configure.ac and gcc/graphite*.c)

From: Tobias Grosser <tobias at grosser dot es>
To: Tobias Burnus <tobias dot burnus at physik dot fu-berlin dot de>, gcc-patches at gcc dot gnu dot org
Cc: Jack Howarth <howarth dot at dot gcc at gmail dot com>, Roman Gareev <gareevroman at gmail dot com>, Richard Biener <richard dot guenther at gmail dot com>, Albert Cohen <albert dot cohen at inria dot fr>, skimo at kotnet dot org, Mircea Namolaru <mircea dot namolaru at inria dot fr>, Paolo Bonzini <bonzini at gnu dot org>, Alexandre Oliva <aoliva at redhat dot com>
Date: Wed, 26 Nov 2014 17:29:16 +0100
Subject: Re: [Build, Graphite] PR64017 - support ISL-0.14 (gcc/configure.ac and gcc/graphite*.c)
Authentication-results: sourceware.org; auth=none
References: <20141126155539 dot GB3850 at physik dot fu-berlin dot de> <20141126162732 dot GC3850 at physik dot fu-berlin dot de>

On 26.11.2014 17:27, Tobias Burnus wrote:

On Wed, Nov 26, 2014 at 04:55:40PM +0100, Tobias Burnus wrote:

This patch adds a configure check for isl_schedule_constraints_compute_schedule,
which is new in ISL 0.13 - and uses it for conditional compilation.


Repeating the test on a massively multicore system, it fails at stage2 with an
in-tree 0.14 because -lisl cannot be found at gcc/configure time. Hence,
HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE is false and one gets later an
error because a 0.12.2 function is not available with ISL 0.14.

However, running the configure test case manually - or building with fewer
cores - works. As does removing "gcc" after the failure such that isl/ is
available.  Thus, it looks like a dependency problem.

It seems to be fixed by the attached patch.
OK for the trunk?


OK from the graphite site. This needs a buildsystem OK though.

Tobias

References:
- [Build, Graphite] PR64017 - support ISL-0.14 (gcc/configure.ac and gcc/graphite*.c)
  - From: Tobias Burnus
- Re: [Build, Graphite] PR64017 - support ISL-0.14 (gcc/configure.ac and gcc/graphite*.c)
  - From: Tobias Burnus

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