# Defines an INTERFACE library target named 'lib3'.
# - INTERFACE: This type of library does not compile any source files itself.
#              It is used purely to propagate usage requirements (like include directories)
#              to targets that link to it.
add_library(lib3 INTERFACE)

# Specifies include directories that are part of lib3's interface.
# - INTERFACE: Means that targets linking to lib3 (like cmake_tutorialApp or lib1) will
#              inherit this include path. This allows them to find lib3.h.
target_include_directories(lib3 INTERFACE
    ${CMAKE_CURRENT_SOURCE_DIR}/inc
)