Adds options to the compilation of source files.

add_compile_options(<option> ...)

Adds options to the compiler command line for sources in the current directory and below. This command can be used to add any options, but alternative commands exist to add preprocessor definitions (target_compile_definitions() and add_definitions()) or include directories (target_include_directories() and include_directories()). See documentation of the directory and :prop_tgt:` target <COMPILE_OPTIONS>` COMPILE_OPTIONS properties.

Arguments to add_compile_options may use “generator expressions” with the syntax $<...>. See the cmake-generator-expressions(7) manual for available expressions. See the cmake-buildsystem(7) manual for more on defining buildsystem properties.