[Bug go/113143] Remove usage of ucontext.h

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113143

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Let me ask a dumb question, are you porting GCC/gccgo to a libc which does not
have ucontext.h ?  If so what is the libc my I ask?