https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61024
sandra at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sandra at gcc dot gnu.org --- Comment #3 from sandra at gcc dot gnu.org --- I believe this issue should be closed, as RTEMS support for Nios II was committed back in July 2014. https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02124.html That patch provided the missing definition for TARGET_LINUX_ABI, among other things.