/home/yurikoles/work/gcc49-multilib/src/gcc-build/gcc/ada/b_gnatb.adb:86: undefined reference to `__gnat_runtime_finalize' ada/b_gnatb.o: In function `adainit': /home/yurikoles/work/gcc49-multilib/src/gcc-build/gcc/ada/b_gnatb.adb:151: undefined reference to `__gnat_runtime_initialize' collect2: error: ld returned 1 exit status distcc[32592] ERROR: compile (null) on localhost failed /home/yurikoles/work/gcc49-multilib/src/gcc-4.9.3/gcc/ada/gcc-interface/Make-lang.in:601: recipe for target 'gnatbind' failed
You need to use an older version of GNAT in order to bootstrap GNAT, and not the other way around which isn't guaranteed to work (and indeed often won't).