# Optional functions
AC_CHECK_FUNCS_ONCE([
arc4random arc4random_stir gai_strerror getnameinfo inet_aton \
- sigaction sigprocmask snprintf vsnprintf strdup strndup strlcpy strlcat \
- strtok_r unsetenv waitpid])
+ setgroups sigaction sigprocmask snprintf strdup strlcat strlcpy \
+ strndup strtok_r unsetenv vsnprintf waitpid])
WORKING_GETADDRINFO