Adding command line options to CMake

command-line cmake
rcv picture rcv · May 13, 2011 · Viewed 97.1k times · Source

I'm building a large library using CMake, and I would like users to be able to selectively enable/disable certain parts of my build process.

How can I add command-line options to my CMake build, e.g. so that users may type something like cmake --build-partone --nobuild-parttwo --dothis=true --dothat=false ..?

Apparently the OPTION keyword will create variables that can be set from the CMake GUI, but I can't figure out how to do this from the command line.

Answer

beduin picture beduin · May 14, 2011

Yeah, you should use the option command. You can set options from the command line this way:

//CMakeLists.txt
option(MyOption "MyOption" OFF)

//Command line
cmake -DMyOption=ON MyProjectFolder

Note that -DMyOption must come before the path.

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