CMake SET_TARGET_PROPERTIES

Question

SET(LIBHELLO_SRC hello.c)
ADD_LIBRARY(hello_static STATIC ${LIBHELLO_SRC})
SET_TARGET_PROPERTIES(hello_static PROPERTIES OUTPUT_NAME "hello")
GET_TARGET_PROPERTY(OUTPUT_VALUE hello_static OUTPUT_NAME)
SET_TARGET_PROPERTIES(hello_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)
SET_TARGET_PROPERTIES(${OUTPUT_VALUE} PROPERTIES CLEAN_DIRECT_OUTPUT 1)
MESSAGE(STATUS “This  is  the  hello_static  OUTPUT_NAME: ”${OUTPUT_VALUE})

当我跑步＆＃34; cmake ..＆＃34;命令，在lib / CMakeLists.txt上给出错误＆＃34; CMake Error：10（SET_TARGET_PROPERTIES）：   SET_TARGET_PROPERTIES找不到要添加属性的目标：hello ＆＃34; 我该怎么办，非常感谢！