cmake: Do not use deprecated feature

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 257d651d6c5df6ba1345df59914babb671db94f4..02a2c2f6bed96b43d9d3f386cc536a77d7dd53ed 100644 (file)
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -91,7 +91,7 @@ add_subdirectory(cn)
 
 add_library(kcf STATIC ${KCF_LIB_SRC})
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  set_property(TARGET kcf APPEND_STRING PROPERTY COMPILE_FLAGS " -Wno-gnu-zero-variadic-macro-arguments ")
+  target_compile_options(kcf PRIVATE -Wno-gnu-zero-variadic-macro-arguments)
 endif()