Created attachment 199331 [details] patch Switching to ports GCC fixes build of math/arpack-ng on GCC architectures. Tested on powerpc64 and amd64. Hardware sponsored by IntegriCloud.
A commit references this bug: Author: linimon Date: Sat Nov 24 19:45:15 UTC 2018 New revision: 485788 URL: https://svnweb.freebsd.org/changeset/ports/485788 Log: Add USES=compiler:c11 to fix build on gcc-based archs. PR: 233307 Submitted by: Piotr Kubaj Changes: head/net/mpich/Makefile