fix public-headers.cmake

Author: DavidingPlus

public-headers.cmake

@@ -2,7 +2,7 @@
 # "Public headers" stands for headers exposing to clients.
 
 # First list all headers here
-file (GLOB_RECURSE CMAKE_PROJECT_PUBLIC_HEADERS_LIST RELATIVE "${PROJECT_SOURCE_DIR}" "${PROJECT_SOURCE_DIR}/*.h")
+file (GLOB_RECURSE CMAKE_PROJECT_PUBLIC_HEADERS_LIST RELATIVE "${PROJECT_SOURCE_DIR}" "${PROJECT_SOURCE_DIR}/src/*.h")
 
 # Concat list items with semicolon to satisfy set_target_properties()
 list (JOIN CMAKE_PROJECT_PUBLIC_HEADERS_LIST "\;" CMAKE_PROJECT_PUBLIC_HEADERS)