如何检查CMake build目录构建类型是Debug还是Release？ [英] How to check if a CMake build directory build type is Debug or Release?

问题描述

我知道构建类型可以使用 -DCMAKE_BUILD_TYPE = Release 或 -DCMAKE_BUILD_TYPE = Debug 设置，但是一个命令行方式来检查/确认CMake正在使用哪个构建类型？

I know the build type can be set using -DCMAKE_BUILD_TYPE=Release or -DCMAKE_BUILD_TYPE=Debug but is there a command line way to check/confirm which build type is being used by CMake?

推荐答案

除了查找 CMakeCache.txt 您可以在build目录中使用

Besides looking in CMakeCache.txt you could - in the build directory - use

cmake -L . | grep CMAKE_BUILD_TYPE
...
CMAKE_BUILD_TYPE:STRING=Release

例如为您的 CMakeLists.txt 添加自定义目标

or you could e.g. add a customized target to your CMakeLists.txt for doing it

add_custom_target(print_build_type COMMAND ${CMAKE_COMMAND} -E echo ${CMAKE_BUILD_TYPE})

如

$ make --silent print_build_type
Release

但是 CMAKE_BUILD_TYPE 可能为空。

But CMAKE_BUILD_TYPE could be empty.

这里是一个更通用的版本，使用生成器表达式：

So here is a more generic version using generator expressions:

add_custom_target(
    print_build_type 
    COMMAND ${CMAKE_COMMAND} -E echo $<$<CONFIG:>:Undefined>$<$<NOT:$<CONFIG:>>:$<CONFIG>>
)

参考

• 如果CMAKE_BUILD_TYPE为空，会对C / C ++构建产生什么影响？


• CMake - 找出当前的构建类型使用

• What happens for C/C++ builds if CMAKE_BUILD_TYPE is empty?
• CMake - Find out which build type is currently used

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