Linking failure on aarch64

[FX]

Compiling the latest gmp (6.2.0) for aarch64-apple-darwin without assembly code leads to many failures of the type:
Symbol not found: ___gmpn_rsblsh1_n

The symbol is always ___gmpn_rsblsh1_n. It is indeed used, but not defined, in the libgmp:

$ nm .libs/libgmp.a | grep rsblsh                                                
                 U ___gmpn_rsblsh2_n
                 U ___gmpn_rsblsh2_n
                 U ___gmpn_rsblsh1_n
                 U ___gmpn_rsblsh1_n
                 U ___gmpn_rsblsh1_n
                 U ___gmpn_rsblsh1_n

Could you help me understand where it should be defined, and why it is not linked into the library?
The configure line used is:

./configure --build=aarch64-apple-darwin MPN_PATH=generic


Thanks,
FX