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Due to an oversight, Aspell compiled dictionaries not only depend on
the endian order, they also depend on the the size of the
size_t type, which is generally different on 32 and
64-bit systems. The size_t type is used in the hash function
of the compiled dictionaries. To force the hash function to use a
32-bit integer instead, use the --enable-32-bit-hash-fun
configure option. This option will allow you to use dictionaries
compiled on a 32-bit machine on a 64-bit one as long as the endian
order is the same. Of course, dictionaries compiled on a 64-bit
machine without this option enabled will no longer be usable. If
Aspell detects that an incompatible hash function is used, it will fail
with:
Error: The file “some-file” is not in the proper format. Incompatible hash function.