[英]OPAM and OCaml installation
我在設置OCaml環境時遇到一些問題,並在關注此頁面:
https://github.com/realworldocaml/book/wiki/Installation-Instructions
但是,我遇到了一些無法解決的問題。 我在macOS 10.12.5上並且正在使用zsh。
Brew安裝opam時沒有錯誤或警告。 我相信我的問題是環境變量(??)不同步。 當我運行一些建議的命令時,這是一些輸出:
opam開關:
-- -- 4.04.2 Official 4.04.2 release
-- -- 4.05.0 Official 4.05.0 release
system C system System compiler (4.05.0)
# 251 more patched or experimental compilers, use '--all' to show
[WARNING] The environment is not in sync with the current switch.
You should run: eval `opam config env`
評估'opam config env':
CAML_LD_LIBRARY_PATH="/Users/Alex/.opam/system/lib/stublibs:/usr/local/lib/ocaml/stublibs"; export CAML_LD_LIBRARY_PATH;
OPAMUTF8MSGS="1"; export OPAMUTF8MSGS;
MANPATH="/Users/Alex/.opam/system/man:"; export MANPATH;
PERL5LIB="/Users/Alex/.opam/system/lib/perl5"; export PERL5LIB;
OCAML_TOPLEVEL_PATH="/Users/Alex/.opam/system/lib/toplevel"; export OCAML_TOPLEVEL_PATH;
PATH="/Users/Alex/.opam/system/bin:/usr/local/opt/opencv3/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/MacGPG2/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS"; export PATH;
opam安裝基礎:
The following actions will be performed:
∗ install sexplib v0.9.2 [required by base]
∗ install base v0.9.3
===== ∗ 2 =====
Do you want to continue ? [Y/n] y
=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[base] Archive in cache
[sexplib] Archive in cache
=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[ERROR] The compilation of sexplib failed at "jbuilder build -p sexplib -j 4".
#=== ERROR while installing sexplib.v0.9.2 ====================================#
# opam-version 1.2.2
# os darwin
# command jbuilder build -p sexplib -j 4
# path /Users/Alex/.opam/system/build/sexplib.v0.9.2
# compiler system (4.05.0)
# exit-code 127
# env-file /Users/Alex/.opam/system/build/sexplib.v0.9.2/sexplib-35995-e7966f.env
# stdout-file /Users/Alex/.opam/system/build/sexplib.v0.9.2/sexplib-35995-e7966f.out
# stderr-file /Users/Alex/.opam/system/build/sexplib.v0.9.2/sexplib-35995-e7966f.err
=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions were aborted
∗ install base v0.9.3
The following actions failed
∗ install sexplib v0.9.2
No changes have been performed
出於問題的目的,我展示了我嘗試安裝base的嘗試,但最終希望安裝core,utop,oasis等。非常感謝您的幫助!
編輯:我應該使用反引號(`)時使用撇號(')。 我認為沒有經驗的shell用戶的證據...
在執行操作時,應使用反引號(在許多鍵盤上,鍵1
的左側)
eval `opam config env`
如果您找不到反引號,則可以使用其他Shell語法
eval $(opam config env)
注意:該命令不應打印任何內容,因為您看到環境變量的值這一事實表明您在調用它是錯誤的(外殼應看到此變量)。
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