Here's the patch. There's a PPA with the proposed package here:
https://launchpad.net/~sergiodj/+archive/ubuntu/mpich-ftbfs/+packages autopkgtest is happy: autopkgtest [21:43:41]: @@@@@@@@@@@@@@@@@@@@ summary version PASS hello1 PASS hello2 PASS hello4 PASS ** Patch added: "fix-mpich-ftbfs.patch" https://bugs.launchpad.net/ubuntu/+source/mpich/+bug/1942265/+attachment/5521972/+files/fix-mpich-ftbfs.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942265 Title: FTBFS with GCC/GFortran 11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mpich/+bug/1942265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs