Difference between revisions of "Cmake"
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== [[#top|^]] To print variables in cmake == | == [[#top|^]] To print variables in cmake == | ||
| + | Note that the following post has a cool answer which involves a cmake macro to print all variables known to a given cmake invocation or use, and also a more simple answer to print one specific variable: | ||
| + | * https://stackoverflow.com/questions/31343813/displaying-cmake-variables | ||
| + | |||
| + | <!-- | ||
| + | - ANSWER 1 - | ||
| + | |||
| + | You asked: (1) Is there an easy way to display these variables without having to run cmake on a CMakeLists.txt file, and (2) without having to manually inspect the config.cmake file? | ||
| + | |||
| + | I can give you a yes answer to (2) but it does require that you (re)run cmake. But since you can re-run your cmake configure step by simply executing cmake . in the build directory, re-running cmake should not keep you from trying this approach. My answer is given in this SO answer and uses the get_cmake_property command. 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() | ||
| + | |||
| + | The macros are invoked with same syntax as cmake functions: | ||
| + | |||
| + | print_all_variables() | ||
| + | |||
| + | |||
| + | |||
| + | - ANSWER 2 - | ||
| − | + | To simply print a value, you could do something like this: | |
| + | |||
| + | message(STATUS "foo include dir: ${foo_INCLUDE}") | ||
| + | |||
| + | where ${foo_INCLUDE} is the value you desire to print. | ||
| + | |||
| + | Note: I'm using cmake > 3.14 | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | --> | ||
== [[#top|^]] To Specify Source Dirs and Library Directories to Linker == | == [[#top|^]] To Specify Source Dirs and Library Directories to Linker == | ||
Revision as of 17:50, 29 March 2022
Zephyr RTOS building blocks :: Device Tree Source :: Kconfig :: cmake :: `west` manifest files
2021-08-06
Starting a page for cmake notes here. Links to cmake site:
- https://cmake.org/overview/
- https://cmake.org/examples/ . . . very limited, need other resources
Longer guides:
A Nordic Semi document on `cmake` and its role in the build process of Zephyr based applications:
2021-08-17 - search for cmake / Zephyr means to add sources to a Zephyr based project:
Contents
^ To print variables in cmake
Note that the following post has a cool answer which involves a cmake macro to print all variables known to a given cmake invocation or use, and also a more simple answer to print one specific variable:
^ To Specify Source Dirs and Library Directories to Linker
^ Install latest version of cmake
^ Zephyr Threads Tutorial by Maksim Drachov
