Package: src:mpfr4 Version: 4.0.2-1 Control: block -1 by 950645 Since binutils/gcc meet some problem due to 2GB/3GB memory limitation on 32bit system. Now one solution is to have host64-target32 toolchains if the arch have compatible 64bit arch, just like x86, mips, powerpc.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950527 -- YunQiang Su