CMake不使用execute_process重定向stderr [英] CMake not redirecting stderr with execute_process

问题描述

我正在尝试使用CMake将 stdout 和 stderr 重定向到同一文件。我在CMake中使用 execute_process 选项和 ERROR_FILE 和 OUTPUT_FILE 指定的选项。

I'm trying to redirect stdout and stderr to the same file using CMake. I'm using the execute_process option in CMake with the ERROR_FILE and OUTPUT_FILE option specified.

我成功捕获了输出，但是错误不存在。我在做什么错了？

I'm successfully capturing the output, but the error is not there. What am I doing wrong?

文件 CMakeLists.txt

add_test(NAME test${ID}
    COMMAND ${CMAKE_COMMAND}
    -DEXE=../examples/test${exampleID}
    -DID=${ID}
    -DARGS=${args}
    -P ${CMAKE_CURRENT_SOURCE_DIR}/Tester.cmake
)

文件 Tester.cmake

separate_arguments( ARGS )
# Run the test
execute_process( 
    COMMAND "${EXE}" ${ARGS}
    ERROR_FILE test${ID}.out
    OUTPUT_FILE test${ID}.out
)

推荐答案

为 OUTPUT_FILE 和 ERROR_FILE 指定相同的文件是最近才在CMake中添加的3.3。请参见发行说明。

Specifying the same file for both OUTPUT_FILE and ERROR_FILE has only recently been added in CMake 3.3. See release notes.

作为早期版本的解决方法，将选项 OUTPUT_VARIABLE 和 ERROR_VARIABLE 与相同的变量，然后将变量的内容写入文件，例如：

As a work-around for earlier versions, use the options OUTPUT_VARIABLE and ERROR_VARIABLE with the same variable and then write the contents of the variable to the file, e.g.:

execute_process( 
    COMMAND "${EXE}" ${ARGS}
    ERROR_VARIABLE _testOut
    OUTPUT_VARIABLE _testOut
)
file (WRITE "test${ID}.out" "${_testOut}")

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