CMake: more debug info

Author: CarterLi

CMakeLists.txt

@@ -161,6 +161,8 @@ if(NOT TARGET_DIR_ETC)
     set(TARGET_DIR_ETC "${TARGET_DIR_ROOT}/etc")
 endif()
 
+message(STATUS "Target dirs: ROOT=\"${TARGET_DIR_ROOT}\" USR=\"${TARGET_DIR_USR}\" ETC=\"${TARGET_DIR_ETC}\"")
+
 #https://cmake.org/cmake/help/latest/variable/CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.html
 if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
     set(CMAKE_INSTALL_PREFIX "${TARGET_DIR_USR}" CACHE PATH "..." FORCE)