cmake : make c++17 private

ggml-ci

Author: ggerganov

src/CMakeLists.txt

@@ -34,7 +34,7 @@ add_library(llama
 
 target_include_directories(llama PRIVATE .)
 target_include_directories(llama PUBLIC ../include)
-target_compile_features   (llama PUBLIC cxx_std_17) # don't bump
+target_compile_features   (llama PRIVATE cxx_std_17) # don't bump
 
 target_link_libraries(llama PUBLIC ggml)