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The CMakeFiles.txt files added with add_subdirectory have access to the variables defined in themselves, and in the parent scope (the toplevel global scope in your example). You can export a variable one level up using: set (Var1 "This is variable 1" PARENT_SCOPE) Share. Follow this answer to receive notifications.

Jul 10, 2015 · Here is that code encapsulated into a cmake macro, print_all_variables, so I can use it when debugging my cmake scripts. macro(print_all_variables) message(STATUS "print_all_variables-----{") get_cmake_property(_variableNames VARIABLES) foreach (_variableName ${_variableNames}) message(STATUS "${_variableName}=${${_variableName}}") endforeach() message(STATUS "print_all_variables-----}") endmacro()

cmake Variables and Properties Introduction #. The simplicity of basic CMake variables belies the complexity of the full variable syntax. This page... Syntax #. Remarks #. Variable names are case-sensitive. Their values are of type string. ... Cached (Global) Variable #. In case a cached variable ...

Some variables are already here, like CMAKE_BUILD_TYPE. The syntax for declaring a variable and setting it if it is not already set is: set(MY_CACHE_VARIABLE "VALUE" CACHE STRING "Description") This will not replace an existing value. This is so that you can set these on the command line and not have them overridden when the CMake file executes.

09.07.2015 · Run CMake and have a look at the cache with the ccmake GUI tool. Then you'll get all the variables. Or run CMake with -LH then you will get all variables printed after configuration. So I think it is not possible to get the variables without running CMake.

CMake has many internal variables. Most of them are undocumented. Some of them, however, were at some point described as normal variables, and therefore may be ...

CMake directives, commands like add_subdirectory(), include(), function() and macro() show different behaviors in terms of the variable ...

The official documentation is home of the authoritative guide to all CMake variables, commands, and properties.

cmake-variables (7) Variables that Provide Information Variables that Change Behavior Variables that Describe the System Variables that Control the Build Variables for Languages Variables for CTest Variables for CPack Variable Expansion Operators Internal Variables

It's important to know how CMake distinguishes between lists and plain strings. When you write: set (VAR "a b c") you create a string with the value "a b c". But when you write this line without quotes: set (VAR a b c) You create a list of three items instead: "a", "b" and "c". Non-list variables are actually lists too (of a single element).

You can construct variable names using variables. After CMake has substituted the variables, it will check again if the result is a variable ...

When run in -P script mode, CMake sets the variables CMAKE_BINARY_DIR, ... This variable will be set to true by CMake if CMake is cross compiling.

cmake-variables (7) ¶. cmake-variables (7) ¶. This page documents variables that are provided by CMake or have meaning to CMake when set by project code. For general information on variables, see the Variables section in the cmake-language manual. begin with _ followed by the name of any CMake Command.

cmake Variables and Properties Local Variable. Example#. set(my_variable "the value is a string").

Variables and the Cache Local Variables. We will cover variables first. ... The names of variables are usually all caps, and the value follows. Cache Variables. If you want to set a variable from the command line, CMake offers a variable cache. Some variables are... Environment variables. You can ...

Local Variables

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 ...

In a build, cached variables are set in the command line or in a graphical tool (such as ccmake , cmake-gui ), and then written to a file called CMakeCache.txt ...