cc: error: the clang compiler does not support 'faltivec', please use -maltivec and include altivec.h explicitly
PR: 264644 Reported by: Andrey Korobkov
Taken from https://github.com/jgaeddert/liquid-dsp/pull/136 . PR: 233790 Submitted by: Piotr Kubaj Approved by: portmgr (tier-2 blanket)