FIND_LIBRARY(libnl NAMES nl-tiny)
-add_definitions(-D_GNU_SOURCE -Wall -Werror -Wextra)
+add_definitions(-D_GNU_SOURCE --std=gnu99 -Wall -Werror -Wextra -Wmissing-declarations -Wno-unused-parameter)
if (${EXT_CER_ID})
add_definitions(-DEXT_CER_ID=${EXT_CER_ID})