I am trying to cross-compile CPython 3.8 using Android NDK toolchains with enabled _socket module but unfortunately compilation failes at:
../Modules/socketmodule.c:6739:5: error: invalid use of undefined type 'struct if_nameindex'
for (i = 0; ni[i].if_index != 0 && i < INT_MAX; i++) {
^
../Modules/socketmodule.c:6739:19: error: dereferencing pointer to incomplete type
for (i = 0; ni[i].if_index != 0 && i < INT_MAX; i++) {
^
../Modules/socketmodule.c:6753:17: error: invalid use of undefined type 'struct if_nameindex'
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
^
../Modules/socketmodule.c:6753:19: error: dereferencing pointer to incomplete type
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
^
../Modules/socketmodule.c:6753:17: error: invalid use of undefined type 'struct if_nameindex'
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
^
../Modules/socketmodule.c:6753:62: error: dereferencing pointer to incomplete type
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
^
Whithout _socket module the whole cross-compilation works well, there are no errors.
Problem solved using the latest r23b version of Android NDK.