Use the new HAVE_GETGROUPS define.

getgroups.c

@@ -39,10 +39,14 @@ main(UNUSED(int argc), UNUSED(char *argv[]))
 	gid_t gid = MY_GID();
 	int gid_in_list = 0;
 
+#ifdef HAVE_GETGROUPS
 	if ((n = getgroups(NGROUPS_MAX, list)) < 0) {
 		perror("getgroups");
 		return 1;
 	}
+#else
+	n = 0;
+#endif
 
 	for (i = 0; i < n; i++)  {
 		printf("%lu ", (unsigned long)list[i]);

uidlist.c

@@ -25,7 +25,10 @@
 
 #include "rsync.h"
 
-#ifdef GETGROUPS_T
+#ifdef HAVE_GETGROUPS
+# if !defined(GETGROUPS_T)
+#  define GETGROUPS_T gid_t
+# endif
 # ifndef NGROUPS_MAX
 /* It ought to be defined, but just in case. */
 #  define NGROUPS_MAX 32
@@ -117,7 +120,7 @@ static uid_t match_uid(uid_t uid)
 
 static int is_in_group(gid_t gid)
 {
-#ifdef GETGROUPS_T
+#ifdef HAVE_GETGROUPS
 	static gid_t last_in = GID_NONE, last_out;
 	static int ngroups = -2;
 	static GETGROUPS_T *gidset;