./configure --target=s390 --prefix=$PREFIX --disable-nls -v checking whether vsnprintf is declared... yes *** BFD does not support target s390-ibm-aix. *** Look in bfd/config.bfd for supported targets. make[1]: *** [configure-bfd] Error 1 make[1]: Leaving directory `/home/linux390/crosstools/binutils-2.18' make: *** [all] Error 2 Why this problem ???