CMAKE：在脚本中打印出所有可访问的变量 [英] CMAKE: Print out all accessible variables in a script

问题描述

我想知道是否有一种方法打印出所有可访问的变量在CMAKE。我对CMAKE变量不感兴趣 - 如--help-variables选项。我说的是我定义的变量，或者包含脚本定义的变量。

我目前包含

INCLUDE（$ {CMAKE_ROOT} CMakeBackwardCompatibilityCXX.cmake）

，希望我可以打印出所有的变量，而不是通过所有的文件和阅读什么是可用的 - 我可能会发现一些变量，我不知道这可能是有用的。这将是很好的帮助学习&发现。它是严格的调试/开发。

类似于打印Lua中当前范围可访问的所有局部变量但是对于cmake！

有没有人这样做？

解决方案

使用 get_cmake_property 函数，以下循环将打印出所有定义的CMake变量及其值：

  get_cmake_property（_variableNames VARIABLES）
 foreach（_variableName $ {_ variableNames}）
 message（STATUS$ {_ variableName} = $ {$ {_ variableName} }要打印环境变量，请使用cmake的   https://cmake.org/cmake/help/v3.7/manual/cmake.1.html#command-line-tool-moderel =nofollow noreferrer>命令模式：
  execute_process（COMMAND$ {CMAKE_COMMAND}-Eenvironment）
  pre> 
I'm wondering if there is a way to print out all accessible variables in CMAKE.  I'm not interested in the CMAKE variables - as in the --help-variables option.  I'm talking about my variables that I defined, or the variables defined by included scripts. 

I'm currently including

INCLUDE (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityCXX.cmake)

and was hoping that I could just print out all the variables that are here, instead of having to go through all the files and read what was available - I may find some variables I didn't know about that may be useful.  It would be good to aid learning & discovery.  It is strictly for debugging/development.

similar to the question in Print all local variables accessible to the current scope in Lua but for cmake!

Has anyone done this?
解决方案
Using the get_cmake_property function the following loop will print out all CMake variables defined and their values:
get_cmake_property(_variableNames VARIABLES)
foreach (_variableName ${_variableNames})
    message(STATUS "${_variableName}=${${_variableName}}")
endforeach()
To print environment variables use cmake's command mode:
execute_process(COMMAND "${CMAKE_COMMAND}" "-E" "environment")


                        
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