[Bug math/26563] libmvec_nonshared.a file removed, spec2017/525 build failed because of missing symbol _ZGVdN4v___exp_finite

["joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=26563

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The point of the removal was that all the references to *_finite symbols 
had already been removed from the glibc headers (bits/math-finite.h was 
removed), so nothing should be generating a reference to those symbols 
when building with the headers from a glibc where libmvec_nonshared.a 
doesn't provide corresponding wrappers.  So you need to find out what is 
using e.g. outdated glibc headers rather than those corresponding to the 
glibc version being used.  (Note that .o / .a files built with an old 
glibc can't be linked with a new glibc if they use symbols that have been 
obsoleted - there's backwards compatibility only for fully linked 
executables / shared libraries using such symbols, not unlinked object 
files.)

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