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CMake variable scope

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CMake has the concept of scope; you can access the value of the variable after you set it as long as you are in the same scope. If you leave a function or a file in a sub directory, the variable will no longer be defined.
https://cliutils.gitlab.io › basics › var...
Sets the given <variable> in the current function or directory scope. If the PARENT_SCOPE option is given the variable will be set in the scope above the ...
2020年12月27日 — CMake variable has a concept of scope like variables in other programming languages. Some CMake directives, commands like add_subdirectory ¹, ...
2017年8月31日 — Variables and scopes in CMake. First, a quick note of caution: Variables exist in an entirely separate universe from properties, and so what I ...
Unlike cache variables regular (normal) CMake variables have scope and don't outlive CMake runs. If in the next example you run the CMake configure step ...
CMake inherently has a directory-based scoping. Setting a variable in a CMakeLists file, will set the variable for that file, and all subdirectories.
2014年12月7日 — Directory Scope. ディレクトリごとにひとつ存在するスコープです。このスコープは add_subdirectory() コマンドが呼び出されたときに作成されます。
2021年8月13日 — The value has dynamic scope. When CMake starts processing commands in a source file it sets this variable to the directory where this file ...
8天前 — I think, you have to think variables and scopes the following way, then it makes sense: A cache variable can be set in any scope and its value ...

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