gettext won't compile during the bootstrap process if you have -mtune=<arch> in your CFLAGS. It errors with something like "C compiler cannot create executables" on the screen. In the config.log file it shows that "tune" is an invalid option. This is probably becuase the -mtune option is for the 3.4 compiler. It's probably just a flag that should be filtered out when building gettext.
general linux issue, not a bugzilla problem
dont put -mtune into CFLAGS unless your compiler supports it