https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78561
--- Comment #11 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> --- My bootstrap at r243245 on gcc110 seemed to work fine. [jgreenhalgh@gcc1-power7 gcc]$ ../build-gcc/gcc/xgcc -v Using built-in specs. COLLECT_GCC=../build-gcc/gcc/xgcc Target: powerpc64-unknown-linux-gnu Configured with: ../gcc/configure --enable-languages=all,ada,go,obj-c++ Thread model: posix gcc version 7.0.0 20161205 (experimental) (GCC) The file you mentioned (gcc/ada/rts_32/a-chahan.adb) seemed to have been compiled with no issues. Am I missing something to get the 32-bit multilib buiild, or maybe I need to target it explicitly?