How can I wrap cache variables from CMake scripts? Let's say I have a CMake project, it depends on any third part library (says SFML or SDL), that project expose a plenty of CACHE variables so that configuring them for each build manually is a pain.
How can I configure from MY project THOSE variables so that the final user/builder does not have to setup that garbage stuff? (say my project has only 3 cache variables "build_win32", "build_max", "build_linux", I know how to setup corresponding flags in dependencies, so why I can't do that via script? having several dependencies could lead to hundreds of Cache variables, configuring a cross platform build becomes unmaintainable and error prone, also not every user would be able to do that because require knowing details about dependencies) The assumption is that a project will not use pre-built binaries for dependencies but will instead include and in-build them (this has plenty advantages, including ability to re-run unit tests also for dependencies, catch misconfigurations in build system early, ability to really support every compiler without having to redownload stuff or compile it manually, this is the true power of CMAKE, just missing 1 detail to go): add_subdirectory(FOLDER_TO_SDL folder_to_my_bin_dir/SDL)
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