Set Xcode target attributes directly.
Xcode generator to set
<an-attribute> to a given
value in the generated Xcode project. Ignored on other generators.
This offers low-level control over the generated Xcode project file. It is meant as a last resort for specifying settings that CMake does not otherwise have a way to control. Although this can override a setting CMake normally produces on its own, doing so bypasses CMake's model of the project and can break things.
to set attributes on all targets in a directory tree.
XCODE_ATTRIBUTE_<an-attribute> may use
"generator expressions" with the syntax
$<...>. See the
cmake-generator-expressions(7) manual for available
expressions. See the
for more on defining buildsystem properties.