ocaml toplevel引发错误无界模块 [英] ocaml toplevel throws error unbounded module

问题描述

我安装了OCAML和OPAM，然后使用OPAM安装了诸如ocaml-http之类的库.当我尝试打开模块Http_types时，ocaml顶级抛出了错误的无界模块.

I installed OCAML and OPAM, then I installed libraries such as ocaml-http using OPAM. When I tried to open module Http_types, ocaml toplevel is throwing error unbounded module.

我尝试在/home/ubuntu/.opam/opam-init/variables.sh

在opam初始化过程中生成的旧文件:

old one generated during opam init:

CAML_LD_LIBRARY_PATH =/home/ubuntu/.opam/4.01.0/lib/stublibs;导出CAML_LD_LIBRARY_PATH; PERL5LIB =/home/ubuntu/.opam/4.01.0/lib/perl5:$ PERL5LIB;出口PERL5LIB; OCAML_TOPLEVEL_PATH =/home/ubuntu/.opam/4.01.0/lib/toplevel;导出OCAML_TOPLEVEL_PATH; MANPATH = $ MANPATH:/home/ubuntu/.opam/4.01.0/man;导出MANPATH; PATH =/home/ubuntu/.opam/4.01.0/bin:$ PATH;导出PATH;

CAML_LD_LIBRARY_PATH=/home/ubuntu/.opam/4.01.0/lib/stublibs; export CAML_LD_LIBRARY_PATH; PERL5LIB=/home/ubuntu/.opam/4.01.0/lib/perl5:$PERL5LIB; export PERL5LIB; OCAML_TOPLEVEL_PATH=/home/ubuntu/.opam/4.01.0/lib/toplevel; export OCAML_TOPLEVEL_PATH; MANPATH=$MANPATH:/home/ubuntu/.opam/4.01.0/man; export MANPATH; PATH=/home/ubuntu/.opam/4.01.0/bin:$PATH; export PATH;

我添加了CAML_LD_LIBRARY_PATH =/home/ubuntu/.opam/4.01.0/lib/stublibs:/home/ubuntu/.opam/4.01.0/lib;导出CAML_LD_LIBRARY_PATH;

I added CAML_LD_LIBRARY_PATH=/home/ubuntu/.opam/4.01.0/lib/stublibs:/home/ubuntu/.opam/4.01.0/lib; export CAML_LD_LIBRARY_PATH;

/home/ubuntu/.opam/4.01.0/lib是所有新的非标准库的安装位置.但是当我再次进行初始化时，新添加的行将消失.

/home/ubuntu/.opam/4.01.0/lib is where all the new non-standard libraries are installed. But when i do opam init again newly added line will disappear.

推荐答案

您需要使用#require指令加载该库，类似这样的方法应该起作用:

You need to load this library with a #require directive, something like this should work:

#use "topfind";;
#require "ocaml-http";;

别忘了实际键入此#符号.

Do not forget to actually type this # symbol.

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