add_compile_options(-ffunction-sections -fdata-sections)
add_compile_options(-Wl,--as-needed -Wl,--gc-sections)
add_compile_options(-fPIC)
+add_compile_options(-std=c++11)
set(CMAKE_C_FLAGS_PROFILING "-g -O0 -pg -Wp,-U_FORTIFY_SOURCE")
set(CMAKE_C_FLAGS_DEBUG "-g -O0 -ggdb -Wp,-U_FORTIFY_SOURCE")