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make 無法辨識已安裝的 opam ocamlfind

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make 無法辨識已安裝的 opam ocamlfind

我正在嘗試運行make涉及對的依賴項ocamlfind，但是當我嘗試安裝它時，它給了我一個循環依賴項和對ocaml-base-nox.

我發現我可以使用一個命令同時安裝 ocaml-findlib和 ，這相互依賴： 但是，剩餘的依賴項返回。它確實提到了幾個軟體包，顯然：libfindlib-ocamlsudo apt install ocaml-findlib ocaml-findlib libfindlib-ocaml ocaml-base-nox-4.01.0Package 'ocaml-base-nox-4.01.0' has no installation candidate

Package ocaml-base-nox-4.01.0 is a virtual package provided by:
  ocaml-base-nox 4.01.0-3ubuntu3.1 [Not candidate version]
  ocaml-base-nox 4.01.0-3ubuntu3 [Not candidate version]

有助於在安裝該軟體包方面取得進展的答案可能會有所幫助。否則，向我揭示如何讓 make 識別opam已安裝的實例可能會有所幫助。正如您所看到的，該安裝實際上有效：

vagrant@vagrant-ubuntu-trusty-64:~/projectfolder$ opam list
# Installed packages for system:
base-bigarray   base  Bigarray library distributed with the OCaml compiler
base-threads    base  Threads library distributed with the OCaml compiler
base-unix       base  Unix library distributed with the OCaml compiler
conf-m4            1  Virtual package relying on m4
ocamlfind      1.7.3  A library manager for OCaml

如您所見，我能夠透過 opam 成功安裝 ocamlfind。有趣的是，我的 make 命令似乎無法識別ocamlfind我在安裝時添加到環境中的命令opam：

/path/to/some/folder/which/is/super/secret -O2 -d acommand file.f
[Error] Critical: Error starting ocamlopt process: Cannot run program
"ocamlfind" (in directory
"/path/to/some/folder/."): error=2, No such file
or directory (Cannot run program "ocamlfind" (in directory
"/path/to/some/folder/."): error=2, No such file
or directory)
make: *** [some/folder/timestamp] Error 113

答案1

出現此問題是因為您的環境變數設定不正確。為此，運行以下命令就足夠了：

eval `opam config env`

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