Vincent Lefevre <> writes:

  As written above, this is for C compilers. But GMP also has assembler
  code. So, you need to provide an option that will affect the assembler
  code. This is what ABI is for.
  That said, perhaps GMP might be improved to detect the ABI by a
  simple parsing of $CFLAGS when provided by the user (in case values
  like -m32 or -m64 are standard). The reason is that the user could
  have a generic CFLAGS for various software, while AFAIK, ABI is
  specific to GMP.

That would be nice but unfortunately is not going to work.

We use "ABI" in a somewhat non-standard way.  It mainly refers to the
limb size.  The same exact compiler flags might be correct for several
choices of "ABI".

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