gistfile1.clj

(ns gbj1
  (:require gbj2))
(println "gbj1")
(defmacro remote-declare [name]
  "defs the supplied  ns-qualified name with no bindings, useful for creating circular dependencies"
  (let [[ns v] (.split (str name) "/")
        orig-ns (str *ns*)]
    `(do (in-ns '~(symbol ns))
         (clojure.core/declare ~(symbol v))
         (in-ns '~(symbol orig-ns)))))

(remote-declare gbj2/a)

(defn a [] (gbj2/a))

(defn b [] :b)

(defn c [] :c)