Created attachment 199331 [details]
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:
Date: Sat Nov 24 19:45:15 UTC 2018
New revision: 485788
Add USES=compiler:c11 to fix build on gcc-based archs.
Submitted by: Piotr Kubaj