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+COMPILE_FLAGS
+-------------
+
+Additional flags to be added when compiling this source file.
+
+These flags will be added to the list of compile flags when this
+source file builds. Use :prop_sf:`COMPILE_DEFINITIONS` to pass
+additional preprocessor definitions.
+
+Contents of ``COMPILE_FLAGS`` may use "generator expressions"
+with the syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)`
+manual for available expressions. However, :generator:`Xcode`
+does not support per-config per-source settings, so expressions
+that depend on the build configuration are not allowed with that
+generator.