CMake Cookbook

How it works

There are three new CMake commands in this recipe: execute_process and add_custom_command, which are always available, and find_package_handle_standard_args, which requires include(FindPackageHandleStandardArgs).

The execute_process command will execute one or more commands as child processes to the currently issued CMake command. The return value for the last child process will be saved into the variable passed as an argument to RESULT_VARIABLE, while the contents of the standard output and standard error pipes will be saved into the variables passed as arguments to OUTPUT_VARIABLE and ERROR_VARIABLE. execute_process allows us to execute arbitrary commands and use their results to infer the configuration of our system. In our ...