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add_compile_options
-------------------

Adds options to the compilation of source files.

::

  add_compile_options(<option> ...)

Adds options to the compiler command line for targets in the current
directory and below that are added after this command is invoked.
See documentation of the :prop_dir:`directory <COMPILE_OPTIONS>` and
:prop_tgt:`target <COMPILE_OPTIONS>` ``COMPILE_OPTIONS`` properties.

This command can be used to add any options, but alternative commands
exist to add preprocessor definitions (:command:`target_compile_definitions`
and :command:`add_definitions`) or include directories
(:command:`target_include_directories` and :command:`include_directories`).

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