[Bug target/65341] [5 Regression] glibc build failure on ppc64le: setcontext.S:367: Error: junk at end of line: `1,0'

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65341

--- Comment #11 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
So one has to use:
CC="gcc -Wa,-mpower8" CXX="g++ -Wa,-mpower8" ../glibc/configure 
to configure glibc on ppc64le? This looks odd to me.
Why not pass -mpower8 to the assembler by default?