Linux mint 上的未绑定模块 Graphics Ocaml

Question

i have read multiple identical problem but answers dont fix it.我已经阅读了多个相同的问题，但答案并没有解决。 The OCaml toplevel, version 4.11.0+dev0-2019-10-18 opam list OCaml 顶层，版本 4.11.0+dev0-2019-10-18 opam 列表

# Packages matching: installed
# Name              # Installed # Synopsis
base-bigarray       base
base-threads        base
base-unix           base
conf-libX11         1           Virtual package relying on an Xlib system instal
conf-pkg-config     1.1         Virtual package relying on pkg-config installati
dune                2.4.0       Fast, portable, and opinionated build system
dune-configurator   2.4.0       Helper library for gathering system configuratio
dune-private-libs   2.4.0       Private libraries of Dune
graphics            5.1.0       The OCaml graphics library
ocaml               4.10.0      The OCaml compiler (virtual package)
ocaml-base-compiler 4.10.0      Official release 4.10.0
ocaml-config        1           OCaml Switch Configuration

opam install graphics [NOTE] Package graphics is already installed (current version is 5.1.0). opam install graphics [注意] Package 图形已安装（当前版本为 5.1.0）。

ocamlfind query -predicates native -a-format graphics ocamlfind query -predicates native -a-format graphics

ocamlfind: Package `graphics' not found
me@2020:~$   /home/ivg/.opam/fresh/lib/ocaml/graphics.cmxa
bash: /home/ivg/.opam/fresh/lib/ocaml/graphics.cmxa: Aucun fichier ou dossier de ce type

ocamlfind ocamlopt -package graphics ocamlfind ocamlopt - 包图形

ocamlfind: Package `graphics' not found

ls ocamlc -where /graphics* ls ocamlc -where /图形*

ls: impossible d'accéder à '/usr/local/lib/ocaml/graphics*': Aucun fichier ou dossier de ce type

sudo apt install libx11-dev sudo apt install libx11-dev

Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances       
Lecture des informations d'état... Fait
libx11-dev est déjà la version la plus récente (2:1.6.4-3ubuntu0.2).
0 mis à jour, 0 nouvellement installés, 0 à enlever et 8 non mis à jour.

I dont understand what is wrong, it seems to be installed but it cant use it properly?我不明白出了什么问题，它似乎已安装但无法正常使用？

ocamlc graphics.cma test1.ml -o test1 ocamlc graphics.cma test1.ml -o test1

File "test1.ml", line 3, characters 5-13:
3 | open Graphics;;
         ^^^^^^^^
Error: Unbound module Graphics

Answer 1

From https://caml.inria.fr/ :从https://caml.inria.fr/ ：

Since OCaml 4.09, the graphics library is distributed as an external package.从 OCaml 4.09 开始，图形库作为外部 package 分发。

Hence you have to specify to ocamlc where to find the corresponding cma file using the -I option and ocamlfind :因此，您必须使用-I选项和ocamlfind向ocamlc指定在哪里可以找到相应的cma文件：

ocamlc -I $(ocamlfind query graphics) graphics.cma test1.ml -o test1

Using utop you will have to start with the directive #require "graphics";;使用utop您必须从指令#require "graphics";;开始。 before doing open Graphics;;在做open Graphics;;

Linux mint 上的未绑定模块 Graphics Ocaml

问题描述

1 个解决方案

解决方案1
3 2020-04-12 10:27:08

Linux mint 上的未绑定模块 Graphics Ocaml

问题描述

1 个解决方案

解决方案1 3 2020-04-12 10:27:08

解决方案1
3 2020-04-12 10:27:08