Add compile options to a target.

target_compile_options(<target> [BEFORE]
  [<INTERFACE|PUBLIC|PRIVATE> [items2...] ...])

Specify compile options to use when compiling a given target. The named <target> must have been created by a command such as add_executable() or add_library() and must not be an IMPORTED Target. If BEFORE is specified, the content will be prepended to the property instead of being appended.

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 target COMPILE_OPTIONS properties.

The INTERFACE, PUBLIC and PRIVATE keywords are required to specify the scope of the following arguments. PRIVATE and PUBLIC items will populate the COMPILE_OPTIONS property of <target>. PUBLIC and INTERFACE items will populate the INTERFACE_COMPILE_OPTIONS property of <target>. The following arguments specify compile options. Repeated calls for the same <target> append items in the order called.

Arguments to target_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.