bug#28287: isl and cloog too old

bug#28287: isl and cloog too old

[Efraim Flashner]

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When we build gcc@6.4 and even gcc@5.4 our copies of isl and cloog are too old,
instead we end up using the bundled copies in gcc. We haven't updated our copies
of isl or cloog because we haven't found a version combo that will build
cloog with unbundled isl. I think we would do better to update isl and
cloog so that they can be used to build gcc, and to just use the bundled
isl in cloog when building cloog.

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bug#28287: isl and cloog too old

[Ludovic Courtès]

Efraim Flashner <efraim@flashner.co.il> skribis:

> When we build gcc@6.4 and even gcc@5.4 our copies of isl and cloog are too old,
> instead we end up using the bundled copies in gcc. We haven't updated our copies
> of isl or cloog because we haven't found a version combo that will build
> cloog with unbundled isl. I think we would do better to update isl and
> cloog so that they can be used to build gcc, and to just use the bundled
> isl in cloog when building cloog.

FWIW the GCC 7 manual says “isl Library version 0.15 or later” and does
not even mention Cloog (info "(gccinstall) Prerequisites").

The GCC 6 manual has “isl Library version 0.16, 0.15, or 0.14” and no
mention of Cloog.

Ludo’.