The command add_custom_target can be used whenever a series of custom commands with no output has to be executed during the build. As we have shown in this recipe, the custom target can be specified as a dependency of other targets in the project. Moreover, custom targets can also depend on other targets, thus offering the possibility to set up the order of execution in our build.
Using the -E flag to CMake, we can run many common operations in an operating system-agnostic fashion. The full list on the specific operating system can be obtained by running cmake -E or cmake -E help. For example, this is the summary of commands on a Linux system:
Usage: cmake -E <command> [arguments...]Available commands: capabilities - Report ...
