https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122807
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- To build libgccjit as both 32bit and 64bit you need to compile GCC twice; once for 32bit and once for 64bit. Since libgccjit is not a target library but rather a library of GCC.
