The usual problem, off_t has a different underlying type depending on
the platform:

gotadmin.c:786:7: warning: format specifies type 'unsigned long long' but the argument has type 'off_t' (aka 'long') [-Wformat]
                    base_offset) == -1) {
                    ^~~~~~~~~~~
gotadmin.c:817:57: warning: format specifies type 'unsigned long long' but the argument has type 'off_t' (aka 'long') [-Wformat]
                printf("%s %s at %llu size %s%s\n", id_str, type_str, offset,
                                 ~~~~                                 ^~~~~~
                                 %ld
gotadmin.c:820:59: warning: format specifies type 'unsigned long long' but the argument has type 'off_t' (aka 'long') [-Wformat]
                printf("%s %s at %llu size %llu%s\n", id_str, type_str, offset,
                                 ~~~~                                   ^~~~~~
                                 %ld
gotadmin.c:821:7: warning: format specifies type 'unsigned long long' but the argument has type 'off_t' (aka 'long') [-Wformat]
                    size, delta_str ? delta_str : "");
                    ^~~~

Also, off_t is implied to be a signed type by POSIX since lseek
returns -1 on failure.

OK?

diff 474b498221b19828b2bcb8e5c5b2ced63acbd1a6 /home/naddy/got
blob - a6398ccb64350775f2db703c7520234c180aefd1
file + gotadmin/gotadmin.c
--- gotadmin/gotadmin.c
+++ gotadmin/gotadmin.c
@@ -780,8 +780,8 @@ list_pack_cb(void *arg, struct got_object_id *id, int 
 		break;
 	case GOT_OBJ_TYPE_OFFSET_DELTA:
 		type_str = "offset-delta";
-		if (asprintf(&delta_str, " base-offset %llu",
-		    base_offset) == -1) {
+		if (asprintf(&delta_str, " base-offset %lld",
+		    (long long)base_offset) == -1) {
 			err = got_error_from_errno("asprintf");
 			goto done;
 		}
@@ -812,11 +812,12 @@ list_pack_cb(void *arg, struct got_object_id *id, int 
 		s = scaled;
 		while (isspace((unsigned char)*s))
 			s++;
-		printf("%s %s at %llu size %s%s\n", id_str, type_str, offset,
-		    s, delta_str ? delta_str : "");
+		printf("%s %s at %lld size %s%s\n", id_str, type_str,
+		    (long long)offset, s, delta_str ? delta_str : "");
 	} else {
-		printf("%s %s at %llu size %llu%s\n", id_str, type_str, offset,
-		    size, delta_str ? delta_str : "");
+		printf("%s %s at %lld size %lld%s\n", id_str, type_str,
+		    (long long)offset, (long long)size,
+		    delta_str ? delta_str : "");
 	}
 done:
 	free(id_str);
-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de