Sorted by: 10. add_definitions add a preprocessor definition, it does not define a cmake variable. CMake is driven by the CMakeLists.txt files written for a software project. First, we will use CMake's option () function to add a command-line option when running the cmake command: cmake -DUSE_DEBUG=ON .. Then, we'll use CMake's add_definitions () function to set the corresponding preprocessor flag in our C++ program: That's all there is to it. The file CMakeLists.txt contains a set of directives and instructions describing the project's source files and targets (executable, library, or both). You should maintain an explicit list of files in your CMakeLists.txt. What would be the correct way. Adds an executable target called <name>to be built from the source files listed in the command invocation. To add a library in CMake, use the add_library () command and specify which source files should make up the library. Coding example for the question Use cmake to conditionally generate source input files-C++. If those file are hand-edited file you have to add them by hand in CMakeLists.txt just like you will add them manually in your favorite VCS. Below you can find a sample CMake file with this functionality . I have not tested, but if you really want to look for a preprocessor definition, maybe more something like this: set (mylib_SOURCES ) list (APPEND mylib_SOURCES file1) get_directory_property (CURRENT_DEFINITIONS COMPILE_DEFINITIONS) list . Choose the desired file type: Specify the name, type, and additional options for the new file. CMake Discourse Conditionally install file depending on CPack generator Usage mrjoel (Joel Johnson) September 13, 2022, 10:30pm #1 I am seeking to generate Linux packages (DEB;RPM) with integration into distribution specific locations via custom file installation. You can run CMake with CMAKE_BUILD_TYPE=Debug for full debugging, or RelWithDebInfo for a release build with some extra debug info. CMake supports conditional configuration so two libraries with the same name can be defined, so long as only one is included in the generated build. 1 Answer. Names starting with a capital letter are reserved for built-in file sets predefined by CMake. {CMAKE_CURRENT_BINARY_DIR}) add_executable(main main.cpp) set_target_properties(main PROPERTIES COMPILE_FLAGS "-include precompiled.h -H") add_dependencies(main generate_precompiled) In this case, we will create a subdirectory specifically for our library. Each target_sources (FILE_SET) entry starts with INTERFACE, PUBLIC, or PRIVATE and accepts the following arguments: FILE_SET <set> The name of the file set to create or add to. If you're on Windows and only have Visual Studio installed, CMake will generate Visual Studio solutions/projects by default. The <name>corresponds to the logical target name and must be globally unique within a project. This can get quite complex quite fast, CMake has many options. In addition to discussing how to write a CMakeLists file, this chapter will also cover how to make them robust and maintainable. CMake adding case insensitive source files; Adding header and .cpp files in a project built with cmake; CLion: Enable debugging of external libraries by adding source files; Adding compiled libraries and include files to a CMake Project? For this program, we have one library (MyLibExample) with a header file and a source file, and one application, MyExample, with one source file. To run a C++ debugger, you need to set several flags in your build. You might be really excited by targets and are already planning out how you can describe your programs in terms of targets. -B build -DCMAKE_TOOLCHAIN_FILE=toolchain-STM32F407.cmake cmake --build build In the real world, projects are never as simple as this minimal example, and we try to reflect this in our training. From here, in addition to adding and removing files, you can add, rename, and remove targets. It must contain only letters, numbers and underscores. Editing CMakeLists Files complains about not finding source files. For CMake, it works only on header files using a command like: include_directories ($ {CMAKE_CURRENT_SOURCE_DIR}/../../commons) in the scr directory. I need something similar to the `debug` and `optimized` >> keywords that are accepted by the `target_link_libraries ()` CMake operation. That's . Similar to the second example in the CMake FAQ here. I cannot manage it to make it work, it does not find the source files. SET (SRCS "$ {SRCS} $ {SRC2}") ENDIF (COND2) ADD_LIBRARY (test $ {SRCS}) But this doesn't work. On Linux it'll generate GNU Make Makefile s. To specify a generator, simply pass a -G option with a name of your generator, for example: cmake -GNinja ../cmake-example ninja is a great build tool. Attached is a modified idf-template project which generates a logo.h as part of the "main" component. I try to keep it simple in this guide. The missing steps are: Add the header as a "source file" for the component. cmake Getting started with cmake "Hello World" with multiple source files Example # First we can specify the directories of header files by include_directories (), then we need to specify the corresponding source files of the target executable by add_executable (), and be sure there's exactly one main () function in the source files. The configure_file () command then substitutes that CMake variable's value during the copy, so the version.cpp file ends up with the version string embedded directly. CMake does this for you with "build types". It evaluates the GLOB expression to a list of files when generating the build system. . The following commands all set or add to the SOURCES target property and are the usual way to manipulate it: add_executable () add_library () add_custom_target () target_sources () Contents of SOURCES may use generator expressions . cmake doesn't get the paths fully expanded and. I'm using a non-recommended way to include files. to do something like above? The CMake commands used to generate and build the project are: cmake -S . > > If it's okay that b.cpp and c.cpp are compiled in all configurations but > incorporated in the final binaries only in the DEBUG or in the RELEASE > configuration, respectively, you might do the following . The CMakeLists files determine everything from which options to present to users, to which source files to compile. The version.cpp file is generated in the build directory and this file is then added as a source for the myapp executable. Use CMAKE_CURRENT_BINARY_DIR to qualify all the paths to the generated header. The top level CMakeLists.txt file can be as simple as this: cmake_minimum_required (VERSION 3.13) project (MyProj) add_library (myLib "") add_subdirectory (foo) add_subdirectory (bar) The empty quotes in the add_library () call are necessary because that command requires a list of source files, even if that list is empty. The first argument to add_library defines the library type. The actual file name of the executable built is constructed based on conventions of the native platform (such as <name>.exeor just <name>). Now the problem is when I want to include source files in the same directory. Ruby and C GLib notes Ruby This is a simple yet complete example of a proper CMakeLists. One of the good things about configure_file () is that . Don't use file (GLOB) in projects. SOURCES CMake 3.25.0-rc1 Documentation SOURCES This specifies the list of paths to source files for the target. the data source file name can be added as a column when reading multi-file datasets with add_filename(); joins now support extension arrays; and all supported Arrow dplyr functions are now documented on the R documentation site. # Almost all CMake files should start with this # You should always specify a range with the newest # and oldest tested versions of CMake. Other types of targets. For more on what's in the 10.0.0 R package, see the R changelog. Add new files In the Project tree, right-click the folder you want to add a file into and select New from the context menu. CMake generate list of source files without glob; CMake - integrating options into C++ source files You can access the CMake targets view by clicking on the Solution Explorer's drop-down menu to the right of the home button: If you have worked with solutions generated by CMake, this view will . Rather than placing all of the source files in one directory, we can organize our project with one or more subdirectories. The build system then operates on this list of files. If the file are generated files this is another story, you may have look at this blog entry: Crascit - 17 Apr 17 Thx, Prakash. The CMake targets view offers even more functionality. Instead of add_library (a $ {MY_HEADERS} $ {MY_SOURCES}), do add_library (a b.h b.cpp). There are several CMake library types which include: target_link_directories: Don't use, give full paths instead (CMake 3.13+) target_link_options: General link flags (CMake 3.13+) target_sources: Add source files; See more commands here. CMake is a build system generator, not a build system.
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