[PATCH] PPC64: First in the series implementing libmvec on POWER8

[Joseph Myers]

On Sat, 2 Mar 2019, GT wrote:

> Differences from previous patch submission:
> 
> 1. Configure verifies that the compiler implements VSX builtins.
> If so vector math library is built by default.

The message "mathvec needs GCC version 4.5 or later" is not appropriate in 
current glibc; glibc already requires GCC 6.2 or later to build.

Is this configure test for compiler support actually needed, or does it 
suffice to build all the relevant files with -mvsx?  That is, are there 
any 64-bit configurations where -mvsx would produce a compilation error?

-- 
Joseph S. Myers
joseph@codesourcery.com