ocaml - 无法使用 opam 安装 ctypes

Question

我希望在我的 Ubuntu 14.04 计算机上安装 ctypes。我尝试使用 opam 来做到这一点，但失败了。这是我得到的回复:-

opam install ctypes
The following actions will be performed:
  ∗  install conf-ncurses 1                   [required by ocamlfind]
  ∗  install ocamlfind    1.6.2               [required by ctypes]
  ∗  install base-bytes   base                [required by ctypes]
  ∗  install ctypes       0.5.1
===== ∗  4 =====
Do you want to continue ? [Y/n] Y

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

[ctypes] Archive in cache
[ocamlfind] Archive in cache

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[ERROR] The compilation of conf-ncurses failed at "pkg-config ncurses".

#=== ERROR while installing conf-ncurses.1 ====================================#
# opam-version 1.2.2
# os           linux
# command      pkg-config ncurses
# path         ~/.opam/4.02.1/build/conf-ncurses.1
# compiler     4.02.1
# exit-code    1
# env-file     ~/.opam/4.02.1/build/conf-ncurses.1/conf-ncurses-3089-ccabea.env
# stdout-file  ~/.opam/4.02.1/build/conf-ncurses.1/conf-ncurses-3089-ccabea.out
# stderr-file  ~/.opam/4.02.1/build/conf-ncurses.1/conf-ncurses-3089-ccabea.err



=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions were aborted
  ∗  install base-bytes base 
  ∗  install ctypes     0.5.1
  ∗  install ocamlfind  1.6.2
The following actions failed
  ∗  install conf-ncurses 1
No changes have been performed

=-=- conf-ncurses.1 troobleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=> This package relies on external (system) dependencies that may be missing. `opam depext conf-ncurses.1' may help you find the correct installation for your system.

我已经安装了依赖项，但仍然无法安装 ncurses。

~$ opam depext conf-ncurses.1
# Detecting depexts using flags: x86_64 linux ubuntu
# The following system packages are needed:
#  - ncurses-dev
#  - pkg-config
# The following new OS packages need to be installed: ncurses-dev
Not running as root, the following command will be run through "sudo":
    apt-get install -qq -yy ncurses-dev
[sudo] password for ask: 
# OS packages installation successful

我想知道为什么我会遇到这些问题，ncurses-dev 和 pkg-config 已经安装在我的系统上。

托比亚斯执行建议的更新:-

# Detecting depexts using flags: x86_64 linux ubuntu
# The following system packages are needed:
#  - m4
#  - ncurses-dev
#  - pkg-config
# The following new OS packages need to be installed: ncurses-dev
Not running as root, the following command will be run through "sudo":
    apt-get install -qq -yy ncurses-dev
# OS packages installation successful
The following actions will be performed:
  ∗  install conf-pkg-config 1.0              [required by ctypes]
  ∗  install conf-m4         1                [required by ocamlfind]
  ∗  install conf-ncurses    1                [required by ocamlfind]
  ∗  install ocamlfind       1.6.2            [required by ctypes]
  ∗  install base-bytes      base             [required by ctypes]
  ∗  install ctypes          0.5.1
===== ∗  6 =====
Do you want to continue ? [Y/n] Y

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[ctypes] Archive in cache
[ocamlfind] Archive in cache

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
∗  installed conf-pkg-config.1.0
∗  installed conf-m4.1
[ERROR] The compilation of conf-ncurses failed at "pkg-config ncurses".

#=== ERROR while installing conf-ncurses.1 ====================================#
# opam-version 1.2.2
# os           linux
# command      pkg-config ncurses
# path         ~/.opam/4.03.0/build/conf-ncurses.1
# compiler     4.03.0
# exit-code    1
# env-file     ~/.opam/4.03.0/build/conf-ncurses.1/conf-ncurses-10261-9b8556.env
# stdout-file  ~/.opam/4.03.0/build/conf-ncurses.1/conf-ncurses-10261-9b8556.out
# stderr-file  ~/.opam/4.03.0/build/conf-ncurses.1/conf-ncurses-10261-9b8556.err



=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions were aborted
  ∗  install base-bytes base 
  ∗  install ctypes     0.5.1
  ∗  install ocamlfind  1.6.2
The following actions failed
  ∗  install conf-ncurses 1
The following changes have been performed
  ∗  install conf-m4         1  
  ∗  install conf-pkg-config 1.0

=-=- conf-ncurses.1 troobleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
=> This package relies on external (system) dependencies that may be missing.
   `opam depext conf-ncurses.1' may help you find the correct installation for
   your system.

The former state can be restored with:
    opam switch import "~/.opam/4.03.0/backup/state-20160410155208.export"

错误文件中仍然没有文本。

谢谢。

Answer 1

当您处理此类错误时，您可以通过查看 opam 指出的错误文件中的整个错误来获取更多详细信息，该错误文件位于此处:

cat /home/ask/.opam/4.02.1/build/conf-ncurses.1/conf-ncurses-3089-ccabea.err

请注意，这里还有经典输出:

cat /home/ask/.opam/4.02.1/build/conf-ncurses.1/conf-ncurses-3089-ccabea.out

您可能拥有可让您结束安装的其他信息。有时，depext 命令中会忘记一些 dep。

PS:我写在这里是因为我没有足够的声誉来要求评论的准确性