10/4/2023 0 Comments Cmake create list![]() Pros: Flexibility to build precisely whatever set of subdirectories you want in one build, CMake only has to process those subdirectories you are interested in (saves time for huge project trees and allows you skip problematic parts of the project tree) and works for any CMake generator.Ĭons: You need separate build directories if you want to build different subdirectories individually. If some subdirectories depend on others, then the logic for whether to add a subdirectory or not would need to account for that (i.e. Option(BUILD_SUBDIR2 "Enable building subdir2" ON) You could build everything, just one subdirectory or a set of subdirectories (more flexible than your requirements, but potentially useful).Ĭonditionally including a subdirectory with an option variable would typically be done something like this: option(BUILD_SUBDIR1 "Enable building subdir1" ON) This would allow you to turn inclusion of each subdirectory on or off individually, giving you precise control over what gets built. In the top level CMakeLists.txt file, you could make the add_subdirectory() call for each subdirectory depend on an option variable. Pros: Flexible, works with any CMake generator, requires no changes to your CMakeLists.txt files.Ĭons: Requires some knowledge of what each subdirectory provides, requires all parts of the source tree to be processed by CMake whether you want to build them or not. ![]() This assumes you know the relevant targets you want to build though, or put another way, it requires you to have a good understanding of what targets are provided by which subdirectories. Pros: Easy, requires no changes to your CMakeLists.txt files.Ĭons: Only works with Unix Makefiles generator, requires all parts of the source tree to be processed by CMake whether you want to build them or not.Īs mentioned by in his comment to your question, you could simply just build the specific target(s) you want from the top level of your build output directory. So while you do run CMake from the root directory, you still only build just the subdirectory(s) you want. Targets from other directories won't get built unless they are needed by a target for the subdirectory you are building in (or a subdirectory below that). If you are using the Unix Makefiles generator with CMake, then simply invoking make from the build output dir that corresponds to the subdirectory you want to build should largely accomplish what you describe. There are a few strategies which may work, some of which could be combined. And also not crowding the sub-dir/CMakeLists.txt too much with redundant code?.while retaining the first bullet point of having the ability to compile it as an entire project.What is the best way to approach this structure cmake root/CMakeLists.txt, which creates an entire project that includes the sub-projects (I already have this implemented using individual CMakeLists.txts inside sub-directories.Ĭmake root/sub-dir/CMakeLists.txt and only compile the sub-project, which essentially also finds the necessary dependencies and includes them from maybe. ![]() I was wondering if there is a better way to have a main project and then sub-projects that get the shared dependencies from main project and can be compiled without cmake-ing the root CMakeLists.txt. If I want root/sub-directories/ as separate sub-projects that can be compiled using the individual CMakeLists.txts in their folders I find myself literally copy pasting almost the entire root file CMakeLists.txt per sub-directory. ![]() # The trailing slash after "$/assets/to_zip.DISCLAIMER: I am new to CMakeLists.txt, I have a working implementation and would like to improve and enhance it, problem described below: # Put it at the top level of the zip via `DESTINATION. # Include everything in the project source directory. Then you can create the zip file with make package or cpack. It will be placed in the build directory, though there may be a way to change that. The basic idea is that you make calls to install() and then tell it what to name the resulting zip file. Since this is the top search result for creating zip files with CMake, here is a CPack solution for completeness.
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