On 18 March 2015 at 11:58, Alex Blekhman wrote: > I can live with 64-bit system, which has 64-bit GCC. What is essential for > me is that I can build both 32-bit and 64-bit targets and then run 32-bit > targets (during test phase of the build). > > How difficult (easy?) is it to have 64-bit Debian/Redhat machine running > 32-bit executables? As Andrew says, that way round is completely trivial, and is enabled by default on x86_64 GNU/Linux. The minimum requirement is just to have the 32-bit pieces of glibc, see https://gcc.gnu.org/wiki/FAQ#gnu_stubs-32.h
