List of public system include directories for a library.
Targets may populate this property to publish the include directories which contain system headers, and therefore should not result in compiler warnings. Additionally, system include directories are searched after normal include directories regardless of the order specified.
target_include_directories(SYSTEM) command signature
populates this property with values given to the
Projects may also get and set the property directly, but must be aware that
adding directories to this property does not make those directories used
during compilation. Adding directories to this property marks directories
SYSTEM which otherwise would be used in a non-
SYSTEM manner. This
can appear similar to 'duplication', so prefer the
target_include_directories(SYSTEM) command and avoid
setting the property by low-level means.
When target dependencies are specified using
CMake will read this property from all target dependencies to mark the
same include directories as containing system headers.
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES may use "generator
expressions" with the syntax
$<...>. See the
cmake-generator-expressions(7) manual for available expressions.
cmake-buildsystem(7) manual for more on defining