Allow ${CHOST}-objdump (or any other override)
--- a/test/run
+++ b/test/run
@@ -133,7 +133,7 @@ objdump_cmd() {
         # back to brute force and ignorance.
         strings "$1"
     else
-        objdump -W "$file"
+        ${OBJDUMP-objdump} -W "$file"
     fi
 }