CMake的execute_process和任意shell脚本 [英] CMake's execute_process and arbitrary shell scripts

问题描述

CMake的 execute_process 命令似乎只能让您执行一个过程-不能随意输入命令外壳。问题是，我想使用管道，文件描述符重定向等，但这似乎是不可能的。另一种选择对我来说会非常痛苦...

CMake's execute_process command seems to only let you, well, execute a process - not an arbitrary line you could feed a command shell. The thing is, I want to use pipes, file descriptor redirection, etc. - and that does not seem to be possible. The alternative would be very painful for me (I think)...

我该怎么办？

PS-CMake 2.8和3.x答案很有趣。

PS - CMake 2.8 and 3.x answer(s) are interesting.

推荐答案

您可以使用shell的脚本执行任何shell脚本支持在字符串参数中使用脚本。

You can execute any shell script, using your shell's support for taking in a script within a string argument.

示例：

execute_process(
    COMMAND bash "-c" "echo -n hello | sed 's/hello/world/;'" 
    OUTPUT_VARIABLE FOO
)

将导致 FOO 包含世界。

当然，您需要小心转义引号和反斜杠。另外请记住，运行bash仅在具有 bash的平台上有效-即，它将无法在Windows上运行。

Of course, you would need to escape quotes and backslashes with care. Also remember that running bash would only work on platforms which have bash - i.e. it won't work on Windows.

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