[Bug math/19058] [x86_64] Link fail with -fopenmp and -flto

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

https://sourceware.org/bugzilla/show_bug.cgi?id=19058

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I think you need to follow up on the compiler discussion of interfaces to 
avoid needing to remap the _finite name at all.  That is, the discussion 
starting at <https://gcc.gnu.org/ml/gcc/2015-06/msg00173.html>.  I don't 
see any replies from you to that thread at all.  You need to take an 
active role for as long as needed in developing consensus on appropriate 
interfaces and getting them implemented, not just start the thread.

As a glibc-based workaround for compilers without a fix, maybe you also 
need libmvec_nonshared.a with wrappers for the _finite names (that just 
jump to the functions with the preferred names) if the asms don't suffice 
in all cases?  The shared library ABI should be kept to the minimum 
needed.  libmvec_nonshared.a would be referenced from the libm.so linker 
script (and its contents would also be in libmvec.a so that users linking 
statically never need to do -lmvec_nonshared).  I think adding functions 
to libmvec-static-only-routines should do what you want (you also need to 
update the code generating the libm.so linker script).

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