I'm trying to install gcc-multilib on fedora, but I cannot find out how. AFAIK it is a Debian/Ubuntu specific package. Nevertheless, it is required for SASM IDE, in order to compile and debug FASM, NASM and gas assembly.
The closes equivalent on Fedora are the 32-bit development libraries, glibc-devel.i686, libstdc++-devel.i686, and so on, and perhaps also their -static.i686 counterpart.