Comment 0 for bug 2009247

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.