https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121527
--- Comment #9 from Sam James <sjames at gcc dot gnu.org> --- (In reply to Richard Biener from comment #8) > That's with an installed ada from the build? Sorry, I'd forgot that part, my system GCC is trunk... > [...] > fatal error, run-time library not installed correctly > cannot locate file system.ads > raised TYPES.UNRECOVERABLE_ERROR : targparm.adb:168 ... try export ADA_INCLUDE_PATH="/usr/lib/gcc/${CHOST}/${ada_bootstrap}/adainclude" export ADA_OBJECTS_PATH="/usr/lib/gcc/${CHOST}/${ada_bootstrap}/adalib" with fixed up paths as appropriate. (Or just wait ;))