This command provides compile definitions to a goal. These definitions are added to the compiler command line through `-D` flags and are seen throughout compilation of supply information related to the goal. For instance, `target_compile_definitions(my_target PUBLIC FOO=1 BAR)` would consequence within the compiler flags `-DFOO=1 -DBAR` being added to the compile command for `my_target`. Definitions might be set to particular values, or just outlined with out a worth. Scopes out there are `PUBLIC` (seen to dependents), `PRIVATE` (seen solely to the goal itself), and `INTERFACE` (seen solely to dependents).
Managing compile definitions via this command promotes organized and maintainable construct configurations. Centralizing definitions inside the CMakeLists.txt file enhances readability, simplifies debugging, and improves collaboration amongst builders. Earlier than CMake 3.12, utilizing `add_definitions()` was the frequent method. Nevertheless, this technique utilized definitions globally, probably resulting in unintended penalties and making complicated tasks tougher to handle. The target-specific method gives finer management and avoids the pitfalls of world definitions, significantly important for bigger tasks and libraries with dependencies.
