问题描述
在我的项目中,我正在使用按照以下说明安装的OCanren软件包:https://github.com/JetBrains-Research/OCanren#Installation。
open OCanren
let _ = inj
(executable
(name test)
(libraries ocanren mtime mtime.clock.os mtime.clock mtime.top)
(flags (:standard -rectypes)))
$ dune build test.exe
File "_none_",line 1:
Error: No implementations provided for the following modules:
Mtime_clock referenced from ~/.opam/4.07.1+fp+flambda/lib/ocanren/OCanren.cmxa(Timer)
Mtime referenced from ~/.opam/4.07.1+fp+flambda/lib/ocanren/OCanren.cmxa(Timer),~/.opam/4.07.1+fp+flambda/lib/ocanren/OCanren.cmxa(Core)
Done: 19/20 (jobs: 1)(base)
如何提供Mtime_clock和Mtime的实现?
解决方法
解决方案是将Mtime程序包放在unit
文件中的OCanren之前:
dune