![]() ![]() _3dparty/utility/mylib/tests)ĬMake command line: cmake.exe -G "." "-DTACKLELIB_CMAKE_ROOT=./_externals/tacklelib/cmake". Tkl_set_target_folder(MYLIB_ROOT * "tests". Tkl_set_target_folder(MYLIB_ROOT * * "tests" EXECUTABLE. Tkl_set_target_folder(CMAKE_CURRENT_LIST_DIR. Include(tacklelib/EnableTargetsExtension) The only portable approach, to ensuring your program is compiled with the correct C++ standard mode on Visual Studio, is to require at least CMake 3. If either of the version requirements are not met, then they have no effect. My attempt: function(add_subdirectory_with_folder folder_name)Īdd_subdirectory_with_folder("Poco" libs/poco)Įxample target from the poco library: add_library( "$") CMake versions higher than 3.10 support MSVC C++ standard switches for MSVC versions newer than 5. Is there an easier way to add projects with my own properties? ![]() I want the targets in my external project to be in their own folder, instead of sprawled out everywhere in the project tree (say the visual studio generator). Sometimes you need them, but be careful.I'm trying to organize the targets in my subproject (in this case poco), but I've come to find that properties can't be modified for ALIAS targets. Qt integration works better if VSGLOBALQtVersion is set to the version FindQt4.cmake found. Tell the Visual Studio generator to set the global variable to a given value in the generated Visual Studio project.Which can make life easier for consumers of your library.Īpplying pre-processor flags (Or any compiler flag) globally can create hidden dependencies in your build.Įssentially think of add_compile_definitions as globals in C/C++. Visual Studio project-specific global variable. Allows usage of PRIVATE/PUBLIC/INTERFACE if needed.It's much more clear to readers of your CMake code how it works.Why is target_compile_definitions better/preferred? Due to not being modular, not scaling well, not supporting generator expressions, etc. These approaches really aren't recommended anymore. Otherwise if users consume your library using add_subdirectory they may have issues. If you use this approach be careful if you are the top level project. add_compile_definitions(WIN32_LEAN_AND_MEAN NOMINMAX) Here is the same logic as above with add_compile_definitions. ![]() # Prevents Windows.h from defining min/max as macrosįind more explanation on which commands to use for compiler flags here: Īdd_compile_definitions applies macros to any targets that are defined after the call. # Prevents Windows.h from adding unnecessary includes Target_compile_definitions(my_lib PRIVATE IE the macro will only be added to your exe/library. The reason you should prefer this approach over any other approach is because it granularity is target based. If you are using CMake 3.X your first choice for adding a preprocessor macro should be target_compile_definitions. Tell the Visual Studio generator to set the global variable '' to a given value in the generated Visual Studio project. The more modern command, add_compile_definitions(), was not added until CMake 3.12." VSGLOBAL Visual Studio project-specific global variable.PLEASE NOTE (as suggests in one of the comment): "if you are using CMake 3.3.2, you have to use add_definitions() or target_compile_definitions(). The line is so modified: add_definitions(-Dfoo=5) # <-HERE THE NEW CMAKE LINE inside CMakeLists.txt To set this linker option in a Visual Studio CMake project. To set this linker option programmatically. Select the Configuration Properties > Linker > Advanced property page. I needed to use: add_definitions(-Dfoo) # <-HERE THE NEW CMAKE LINE inside CMakeLists.txtĪnd, in order to have a preprocessor macro definition like this other one: #define foo=5 For details, see Set C++ compiler and build properties in Visual Studio. With CMake version 3.3.2, in order to create #define foo The cmake documentation can be found on the official page. Check the version of your Cmake by using $ cmake -version and pick the solution that fits your needs. Here the solution for the version I am using (i.e., 3.3.2). The other solutions proposed on this page are useful for some versions of Cmake > 3.3.2. ![]()
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