Makefile 未绑定模块Yojson.Basic.Util

我尝试在我的一个文件中打开

Yojson.Basic.Util

，并不断得到一个u

nbound模块

错误。我试过几种不同的方法，但似乎都不知道怎么回事

我的

.ocamlinit

中有这个：

#require "yojson";;
#require "ANSITerminal";;

在我的

makefile

中：

test:
    ocamlbuild -pkg yojson, oUnit test.byte && ./test.byte

play:
    ocamlbuild -pkgs oUnit,yojson,str,ANSITerminal main.byte && ./main.byte

check:
    bash checkenv.sh

clean:
    ocamlbuild -clean

键入

make

会产生此错误：

ocamlbuild -pkg yojson, oUnit test.byte && ./test.byte
ocamlfind: Package `yojson,' not found
Cannot run Ocamlfind.
make: *** [test] Error 2

ocamlbuild -use-ocamlfind -pkg yojson, oUnit test.byte && ./test.byte
Solver failed:
  Ocamlbuild knows of no rules that apply to a target named oUnit. This can happen if you ask Ocamlbuild to build a target with the wrong extension (e.g. .opt instead of .native) or if the source files live in directories that have not been specified as include directories.
Compilation unsuccessful after building 0 targets (0 cached) in 00:00:00.
make: *** [test] Error 6

将

makefile

更改为：

test:
    ocamlbuild -use-ocamlfind -pkg yojson, oUnit test.byte && ./test.byte

play:
    ocamlbuild -pkgs oUnit,yojson,str,ANSITerminal main.byte && ./main.byte

check:
    bash checkenv.sh

clean:
    ocamlbuild -clean

我输入了

make

，它给出了以下错误：

ocamlbuild -pkg yojson, oUnit test.byte && ./test.byte
ocamlfind: Package `yojson,' not found
Cannot run Ocamlfind.
make: *** [test] Error 2

ocamlbuild -use-ocamlfind -pkg yojson, oUnit test.byte && ./test.byte
Solver failed:
  Ocamlbuild knows of no rules that apply to a target named oUnit. This can happen if you ask Ocamlbuild to build a target with the wrong extension (e.g. .opt instead of .native) or if the source files live in directories that have not been specified as include directories.
Compilation unsuccessful after building 0 targets (0 cached) in 00:00:00.
make: *** [test] Error 6

---

ocamlbuild的

-pkg

和

-pkgs

选项之间存在差异。

-pkg

选项只使用一个包名。

-pkgs

选项采用逗号分隔的包名列表（逗号前后可以有可选空格，但必须引用参数）

在您的示例中，您使用了

-pkg

，但是使用了逗号分隔的参数列表，并且该列表有一个空格，因此必须引用它。使用

-pkgs-yojson，oUnit

应该可以解决这个问题