CMake Passing Lists on Command Line

Question

I need to run swig as part of my cmake build system. I want the user to be able to specify a list of languages to pass to swig and specify them on the command line.

$ cmake -DSWIG_LANGUAGES=java,scala <path to cmake_source_dir>

Is there a built-in-way for cmake to handle this?

Lists are handled in CMake with semicolon. If you use -DSWIG_LANGUAGES=java;scala;haskell you can for example iterate over the list with a for loop. — usr1234567
– usr1234567, Commented Oct 20, 2015 at 18:34

tamas.kenez · Accepted Answer · 2015-10-20 23:34:38Z

You can use semicolons to separate list items. Since semicolon is a special character in unix-like shells, you need to escape it or use quotes. Any of the following commands work:

cmake -DSWIG_LANGUAGES=java\;scala ... cmake "-DSWIG_LANGUAGES=java;scala" ... cmake '-DSWIG_LANGUAGES=java;scala' ...

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