New in version 3.1.
List of interface sources to compile into consuming targets.
Targets may populate this property to publish the sources
for consuming targets to compile. The
populates this property with values given to the
INTERFACE keywords. Projects may also get and set the property directly.
When target dependencies are specified using
CMake will read this property from all target dependencies to determine the
sources of the consumer.
INTERFACE_SOURCES may use "generator expressions"
with the syntax
$<...>. See the
manual for available expressions. See the
manual for more on defining buildsystem properties.