[Dev-luatex] unrecognised float format: IEEE double, little endian

Hi, When building LuaTeX on Raspberry Pi I get the following warning during configuration: === configuring in mpfr (/path/to/src/luatex/build/libs/mpfr) configure: WARNING: oops, unrecognised float format: IEEE double, little endian What's the best test to check whether the final binary works ok? I assume this is used in MPlib. Mojca