[Bug 2009247] [NEW] gromacs ftbfs on ppc64el with gcc-12

[Steve Langasek]

Public bug reported:

The gromacs package has been failing to build on ppc64el since gcc moved
to gcc-12, with failures in the test suite.

https://launchpad.net/ubuntu/+source/gromacs/2022.5-2/+build/25596379

The last successful build was with gcc-11. Hard-coding gcc-11 for the
build allows it to again build successfully in lunar.

https://launchpad.net/ubuntu/+source/gromacs/2022.5-2ubuntu1/+build/25633954

The failure persists when disabling LTO and when downgrading from -O3 to
-O2.

The failure also is not seen in Debian, where this built successfully
with gcc-12.

** Affects: gcc-12 (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  The gromacs package has been failing to build on ppc64el since gcc moved
  to gcc-12, with failures in the test suite.
  
  https://launchpad.net/ubuntu/+source/gromacs/2022.5-2/+build/25596379
  
  The last successful build was with gcc-11. Hard-coding gcc-11 for the
  build allows it to again build successfully in lunar.
  
  https://launchpad.net/ubuntu/+source/gromacs/2022.5-2ubuntu1/+build/25633954
  
  The failure persists when disabling LTO and when downgrading from -O3 to
  -O2.
+ 
+ The failure also is not seen in Debian, where this built successfully
+ with gcc-12.

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https://bugs.launchpad.net/bugs/2009247

Title:
  gromacs ftbfs on ppc64el with gcc-12

Status in gcc-12 package in Ubuntu:
  New

Bug description:
  The gromacs package has been failing to build on ppc64el since gcc
  moved to gcc-12, with failures in the test suite.

  https://launchpad.net/ubuntu/+source/gromacs/2022.5-2/+build/25596379

  The last successful build was with gcc-11. Hard-coding gcc-11 for the
  build allows it to again build successfully in lunar.

  https://launchpad.net/ubuntu/+source/gromacs/2022.5-2ubuntu1/+build/25633954

  The failure persists when disabling LTO and when downgrading from -O3
  to -O2.

  The failure also is not seen in Debian, where this built successfully
  with gcc-12.

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