[Bug 2025142] [NEW] SRU: build isl with the standard baseline

[Matthias Klose]

Public bug reported:

by default, isl picks up the current processor and optimizes the build
for that processor. That's not what we want. Configure isl --without-
gcc-arch instead.

This makes isl (and gcc) to work on all processors again.

The regression potential is small, isl is only used for the graphite
optimizations in GCC, which are not used by default.

** Affects: isl (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: isl (Ubuntu Jammy)
     Importance: Undecided
         Status: New

** Affects: isl (Ubuntu Kinetic)
     Importance: Undecided
         Status: New

** Affects: isl (Ubuntu Lunar)
     Importance: Undecided
         Status: New

** Also affects: isl (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: isl (Ubuntu Kinetic)
   Importance: Undecided
       Status: New

** Also affects: isl (Ubuntu Lunar)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2025142

Title:
  SRU: build isl with the standard baseline

Status in isl package in Ubuntu:
  New
Status in isl source package in Jammy:
  New
Status in isl source package in Kinetic:
  New
Status in isl source package in Lunar:
  New

Bug description:
  by default, isl picks up the current processor and optimizes the build
  for that processor. That's not what we want. Configure isl --without-
  gcc-arch instead.

  This makes isl (and gcc) to work on all processors again.

  The regression potential is small, isl is only used for the graphite
  optimizations in GCC, which are not used by default.

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