For libmpx the reason is that MPX ISA doesn't support x32. I.e. MPX instructions can't use 32bit bounds in 64bit mode.
Ilya 2015-11-18 9:34 GMT+03:00 Ulrich Drepper <drep...@gmail.com>: > Is there a reason why libmpx and libgccjit aren't build for x32? This > is in the case when building IA-32, x86-64, and x32 all together. > Haven't tested any other way to build. I suspect it's just an > oversight in the way configuration works since I cannot see a > technical reason.