> Found it.  https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
> 
> Add trailing undersores to __FLOAT_WORD_ORDER and change
> __BIG_ENDIAN to __ORDER_BIG_ENDIAN__.  Likewise for LITTLE.

Thanks Steve!

What I wonder is: if those conditions failed, then the struct they define should have been empty, and therefore the code shouldn’t compile anyway (that was the intent).

Does the attached patch fix the remaining failures?

FX