cmake在哪里寻找.cmake脚本？ [英] Where does cmake look for .cmake scripts?

问题描述

我正在尝试像这样在 cmake 中执行 execute_process

I am trying to execute_process in cmake like this

execute_process(COMMAND ${CMAKE_COMMAND} -P myScript.cmake

这仅在文件 myScript.cmake 在同一工作目录中时有效。

This only works if the file, myScript.cmake is in the same working directory.

三个相关问题：

1. cmake 是否有标准位置要查找 .cmake 脚本吗？


2. 是否可以定义一个 cmake 变量来告诉 cmake 在哪里看？或


3. 我应该始终给出脚本的完整路径（即 -P $ { PATH_VAR} /myScript.cmake ）？

1. Does cmake have a standard location to look for .cmake scripts?
2. Is there a cmake variable I can define to tell cmake where to look? or
3. Should I always give a full path to the script (i.e., -P ${PATH_VAR}/myScript.cmake)?

推荐答案

cmake 是否有标准位置来查找 .cmake 脚本？

Does cmake have a standard location to look for .cmake scripts?

对于 execute_process ，否。 find_XXX 命令（例如> find_file ）和 include 可以。

For execute_process, no. The find_XXX commands (e.g. find_file) and include do though.

我是否可以定义 cmake 变量来告诉 cmake 在哪里查看？

Is there a cmake variable I can define to tell cmake where to look?

再次，对于 execute_process ，否 find_xxx 或 include ，您可以设置变量 CMAKE_MODULE_PATH 。

Again, for execute_process, no. For find_xxx or include, you can set the variable CMAKE_MODULE_PATH.

我应该始终给出脚本的完整路径（即 -P $ {PATH_VAR} /myScript.cmake ） ？

这是一个不错的选择；通过完整的路径不会有不确定的余地，但是，您也可以摆脱相对路径。 execute_process 的默认工作目录是 CMAKE_BINARY_DIR ，因此您可以相对于脚本传递路径。

That's a good option; passing a full path leaves no room for uncertainty. However, you can get away with a relative path too. The default working directory for execute_process is the CMAKE_BINARY_DIR, so you can pass the path to the script relative to that.

或者，您可以在 execute_process 调用中指定 WORKING_DIRECTORY 作为完整路径或相对于 CMAKE_BINARY_DIR 。

Alternatively you can specify the WORKING_DIRECTORY in the execute_process call either as a full path or relative to the CMAKE_BINARY_DIR.

如果您认为脚本位于标准位置，则可以考虑先使用 find_file 。这将找到脚本的完整路径，并且可以在您的 execute_process 调用中使用该变量。

If you feel your script is in a standard location, you could consider "finding" it first using a call to find_file. This would yield the full path to the script if found and that variable can be used in your execute_process call.

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