New in version 3.10.
This property is supported only when <LANG> is C or CXX.
Specify a semicolon-separated list containing a command line for the cppcheck static analysis tool. The Makefile Generators and the Ninja generator will run cppcheck along with the compiler and report any problems. If the command-line specifies the exit code options to cppcheck then the build will fail if the tool returns non-zero.
This property is initialized by the value of the CMAKE_<LANG>_CPPCHECK variable if it is set when a target is created.
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https://cmake.org/cmake/help/v3.19/prop_tgt/LANG_CPPCHECK.html