Take great care when setting variables or targets in a projectinclude.cmake file. I've seen some hints that perhaps cmake is discarding the value of CMAKE_CXX_FLAGS because my CMakeLists.txt doesn't compile anything. This is important if a projectinclude.cmake file relies on variables set by another component. If I add some of my own values to my toolchain file and print out their values in my CMakeLists.txt they are correct, so I know the toolchain file is being processed. First, the location possibly defined in the CMake variable DEALIIDIR is. The messages say that all these values are empty. So now I've created a CMakeLists.txt file, separate from the one we use for our main project, that looks like this: cmake_minimum_required(VERSION 2.8)Įxecute_process(COMMAND $") This is (the important part of) the toolchain file that we use for our project: SET(CMAKE_CXX_FLAGS "-std=c++11") Since the compiler can be changed from the system default by setting CMAKE_CXX_COMPILER, I figure the safest way to detect the compiler is to ask cmake itself what it's using. A lot of variables used by CMake are set with the project() and enablelanguage() calls. This is set to lib/pythonX.Y/dist-packages (Debian), lib/pythonX.Y/site-packages (non-Debian) or lib/site-packages (Windows).As part of our build process, we need to record the details of the machine and compiler. This variable should not be used directly, use CATKIN_PACKAGE_BIN_DESTINATION instead. The variable CGALDIR is also generally found when CGAL has been obtained via a package manager.
#Important cmake variables install
some important module use this scheme and install the Config.cmake files. In a typical installation of dependencies, almost all CMake variables will be set automatically. CMake then looks for a file called FindXXX.cmake, pre-sets some variables. You can use this section in the same way that you might use the CMakeGUI to view a list of all the CMake variables available to edit. The most important CMake variable is the variable CGALDIR, which will serve to configure CGAL as you configure your program. They're passed to CMake at build time, and override whatever values are in the CMakeLists.txt file. Not work as expected since tools like catkin_find will only consider These settings enable you to set CMake variables and save them in CMakeSettings.json. Note that setting this variable to anything but lib or libexec will
On non-Debian distributions it could be set to libexec. Previous message: CMake documentation for important cmake variables Next message: CMake documentation for important cmake variables Messages sorted by: On Thursday 17:15, Alexander. This variable should not be used directly, use CATKIN_PACKAGE_LIB_DESTINATION instead. CMake documentation for important cmake variables Filipe Sousa filipe at ipb.pt Thu May 12 13:15. This destination should only be used when installing headers which are not in a subfolder which matches the project name.Įlse you should use the destination CATKIN_PACKAGE_INCLUDE_DESTINATION instead. This page lists environment variables that have special meaning to CMake. If you are unsure if you should use this destination use CATKIN_PACKAGE_LIBEXEC_DESTINATION instead. Environment Variables for the CMake curses interface.
This destination should only be used for the core ROS binaries.
C compiler to be used for compilation (default: system specific, gcc on Linux) CMAKECXXCOMPILER. They only contain relative paths and are supposed to be relative to the $. Some common CMake variables CMAKECCOMPILER.
#Important cmake variables generator
All destination variables are meant to be used with the CMake install() macro as an DESTINATION argument. In this article I've just scratched the surface of the huge CMake universe, while there are tons of interesting features that deserve a mention: macros and functions to write reusable CMake blocks variables and lists, useful for storing and manipulating data generator expressions to write complex generator-specific properties continuous.
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