Multiple errors after "make" rsync-3.1.3 in cygwin

[xducker]

 /rsync-3.1.3
$ make
gcc -I. -I. -I./zlib -I./popt -g -O2 -DHAVE_CONFIG_H -Wall -W -Wno-unused-parameter  -c acls.c -o acls.o
In file included from acls.c:23:
lib/sysacls.h:118:20: error: array type has incomplete element type ‘struct acl’
  118 |         struct acl acl[1];
      |                    ^~~
acls.c: In function ‘unpack_smb_acl’:
lib/sysacls.h:108:33: error: ‘USER_OBJ’ undeclared (first use in this function); did you mean ‘ACL_USER_OBJ’?
  108 | #define SMB_ACL_USER_OBJ        USER_OBJ
      |                                 ^~~~~~~~
acls.c:286:22: note: in expansion of macro ‘SMB_ACL_USER_OBJ’
  286 |                 case SMB_ACL_USER_OBJ:
      |                      ^~~~~~~~~~~~~~~~
lib/sysacls.h:108:33: note: each undeclared identifier is reported only once for each function it appears in
  108 | #define SMB_ACL_USER_OBJ        USER_OBJ
      |                                 ^~~~~~~~
acls.c:286:22: note: in expansion of macro ‘SMB_ACL_USER_OBJ’
  286 |                 case SMB_ACL_USER_OBJ:
      |                      ^~~~~~~~~~~~~~~~

and so on... What do I do? I need to install this version?