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).
#Cmake tutorial cmakelists txt generator#
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. DISCLAIMER: I am new to CMakeLists.txt, I have a working implementation and would like to improve and enhance it, problem described below:
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