使用 bash 管道的 CMake executing_process

Question

在我的 CMakeLists.txt 中，我需要执行位于 /include/ff 下的 mapping_string.sh 脚本。此脚本需要用户键入“y”才能继续。

我试过这种方法，但我只得到一个无限打印的“mapping_string.sh”字符串。

execute_process(
    COMMAND yes | bash mapping_string.sh
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/include/ff
    RESULT_VARIABLE FF_MS_RES
)

Answer 1

with bash pipeline

即管道是 Bash 的一部分，你必须运行 Bash，而不是其他东西。

execute_process(
    COMMAND bash -c "yes | bash mapping_string.sh"
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/include/ff
    RESULT_VARIABLE FF_MS_RES
)

请务必阅读有关在 CMake 中引用的内容 https://cmake.org/cmake/help/latest/manual/cmake-language.7.html#quoted-argument。

Answer 2

使用 execute_process 命令的内置功能代替管道：

Commands are executed concurrently as a pipeline, with the standard output of each process piped to the standard input of the next. A single standard error pipe is used for all processes.

execute_process(
    COMMAND yes
    COMMAND bash mapping_string.sh
    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/include/ff
    RESULT_VARIABLE FF_MS_RES
)

使用 bash 管道的 CMake executing_process

CMake executing_process with bash pipeline

bash

cmake