I would like to define a CMake (v3.30.2) function that uses FetchContent_Declare() and FetchContent_MakeAvailable() to download some artifact from my GitLab instance.

I have a custom target for my CMake file that is configurable in the number of output files it produces. If the caller passes a particular argument to my script, I want to generate more output files. The issue that I am struggling to resolve is that if the user doesn’t pass in the argument to generate more files, and the inputs haven’t changed, I want the target to be skipped.

I am writing a Cmake file and want to detect the version of numpy installed.

I have no idea how CMAKE_MODULE_PATH, CMAKE_PREFIX_PATH work,
It seems not add to search list for find_package()

I would like to set a variable that is available for modification in a third-party library which I have included as a subdirectory (add_subdirectory(.../third_party/libA)). The library allows me to enable/disable certain portions of the build process such as to including testing targets, for example: set(BUILD_TESTS OFF).

I would have expected the following to work recursively through the target dependency hierarchy:

Environment: wsl22.04
gcc11.4
make 4.21
(the clion project uses the wsl.exe as terminal, and Toolchains are all in wsl22.04.)

I made a fresh new project from an empty folder using the quick start command. In the folder are the cmakelists.txt and main.cpp files only. When running any command (such as Configure, Edit Cache…), I get this error output:

I have a library that I usually build in Debug and Release or RelWithDebInfo mode. When using that library, I get warning from CMake policy CMP0111.

I m a newbie in cmake and encountered problem as i use it, error `The following imported targets are referenced, but are missing` showed up, there is a similar question here but i could not get it right in my mind. here is my folder structure.