Ruby

I get the errors below when making make up install-nodoc.
I'm not at v64208.

compiling vm.c
In file included from vm_insnhelper.c:1570:0,
                 from vm.c:310:
vm_args.c: In function ‘vm_to_proc’:
vm_args.c:813:17: error: implicit declaration of function ‘rb_vm_call0’ [-Werror=implicit-function-declaration]
             b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me);
                 ^~~~~~~~~~~
In file included from vm.c:310:0:
vm_insnhelper.c: In function ‘vm_call_bmethod_body’:
vm_insnhelper.c:1977:11: error: implicit declaration of function ‘vm_invoke_bmethod’ [-Werror=implicit-function-declaration]
     val = vm_invoke_bmethod(ec, proc, calling->recv, calling->argc, argv, calling->block_handler);
           ^~~~~~~~~~~~~~~~~
In file included from vm.c:308:0:
/cygdrive/c/Data/ruby/insns.def: In function ‘vm_exec_core’:
vm_insnhelper.h:109:20: warning: passing argument 1 of ‘vm_expandarray’ from incompatible pointer type [-Wincompatible-pointer-types]
 #define GET_SP()   (COLLECT_USAGE_REGISTER_HELPER(SP, GET, VM_REG_SP))
                    ^
/cygdrive/c/Data/ruby/insns.def:449:20: note: in expansion of macro ‘GET_SP’
     vm_expandarray(GET_SP(), ary, num, (int)flag);
                    ^~~~~~
In file included from vm.c:310:0:
vm_insnhelper.c:1240:1: note: expected ‘rb_control_frame_t * {aka struct rb_control_frame_struct *}’ but argument is of type ‘VALUE * {aka long unsigned int *}’
 vm_expandarray(rb_control_frame_t *cfp, VALUE ary, rb_num_t num, int flag)
 ^~~~~~~~~~~~~~
In file included from vm.c:318:0:
vm_eval.c: At top level:
vm_eval.c:44:1: error: conflicting types for ‘rb_vm_call0’
 rb_vm_call0(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, const rb_callable_method_entry_t *me)
 ^~~~~~~~~~~
In file included from vm_insnhelper.c:1570:0,
                 from vm.c:310:
vm_args.c:813:17: note: previous implicit declaration of ‘rb_vm_call0’ was here
             b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me);
                 ^~~~~~~~~~~
cc1: warning: unrecognized command line option ‘-Wno-cast-function-type’
cc1: warning: unrecognized command line option ‘-Wno-self-assign’
cc1: warning: unrecognized command line option ‘-Wno-constant-logical-operand’
cc1: warning: unrecognized command line option ‘-Wno-parentheses-equality’
cc1: some warnings being treated as errors
make[1]: *** [Makefile:403: vm.o] Error 1
make[1]: Leaving directory '/cygdrive/c/Data/ruby'
make: [uncommon.mk:1147: up] Error 2 (ignored)