Opam中的图形安装

Question

我正在尝试使用opam install graphics安装图形，但我得到了以下错误消息：

$ opam install graphics
The following actions will be performed:
  ∗ install   graphics     5.1.1
  ↻ recompile ocamlfind    1.9.1 [uses graphics]
  ↻ recompile base-bytes   base  [uses ocamlfind]
  ↻ recompile ounit2       2.2.4 [uses base-bytes]
  ↻ recompile ANSITerminal 0.8.2 [uses base-bytes]
===== ∗ 1   ↻ 4 =====
Do you want to continue? [Y/n] y

<><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><>   
[ANSITerminal.0.8.2] found in cache
[graphics.5.1.1] found in cache
[ocamlfind.1.9.1] found in cache
[ounit2.2.2.4] found in cache

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><>   
[ERROR] The compilation of graphics failed at "/Users/traviszhang/.opam/opam-init/hooks/sandbox.sh build dune
        build -p graphics -j 3 @install".

#=== ERROR while compiling graphics.5.1.1 =====================================#
# context     2.0.8 | macos/x86_64 | ocaml-base-compiler.4.11.1 | https://opam.ocaml.org#7e6a6dcc
# path        ~/.opam/cs3110-2021sp/.opam-switch/build/graphics.5.1.1
# command     ~/.opam/opam-init/hooks/sandbox.sh build dune build -p graphics -j 3 @install
# exit-code   1
# env-file    ~/.opam/log/graphics-9364-8b8a2d.env
# output-file ~/.opam/log/graphics-9364-8b8a2d.out
### output ###
# [...]
# In file included from src/unix/subwindow.c:16:
# src/unix/libgraph.h:17:10: fatal error: 'X11/Xlib.h' file not found
# #include <X11/Xlib.h>
#          ^~~~~~~~~~~~
# 1 error generated.
#           cc src/text.o (exit 1)
# (cd _build/default/src && /usr/bin/cc -O2 -fno-strict-aliasing -fwrapv -D_FILE_OFFSET_BITS=64 -D_REENTRANT -g -I /Users/traviszhang/.opam/cs3110-2021sp/lib/ocaml -o text.o -c text.c)
# In file included from src/unix/text.c:16:
# src/unix/libgraph.h:17:10: fatal error: 'X11/Xlib.h' file not found
# #include <X11/Xlib.h>
#          ^~~~~~~~~~~~
# 1 error generated.



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>   
┌─ The following actions failed
│ λ build graphics 5.1.1
└─ 
╶─ No changes have been performed

我尝试过以下解决方案，但似乎没有一种可行：

1. https://github.com/ocaml/graphics/issues/16 (运行export LIBRARY_PATH=/opt/X11/lib)
2. 还将export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig:/opt/X11/lib/pkgconfig"添加到我的.zshrc文件中(在与1相同的线程中提到了这一点。

当我运行pkg-config --list-all | grep x11时，会弹出x11库，但由于某种原因，垃圾邮件在试图安装图形时似乎找不到它。任何建议都是有帮助的！

以下是我目前的计算机配置：

• macOS BigSur版本11.2.1
• Ocaml编译器4.11.1

更新：

此问题已在以下线程(https://github.com/ocaml/graphics/pull/36#issuecomment-846827032)中提出，并将在新的图形发行版中更新。

Answer 1

要使图形包在macOS上工作，最简单的方法是安装和正确安装自制，然后您就可以这样做了。

opam depext --install graphics

它应该通过自制(xquartz和xorgproto)安装系统依赖项，并安装OCaml库。