# Checks for header files.
AC_FUNC_ALLOCA
AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h limits.h netinet/tcp.h stddef.h stdint.h stdlib.h string.h sys/socket.h sys/time.h syslog.h unistd.h sys/poll.h], [], [AC_MSG_ERROR([missing a required header])])
# Checks for header files.
AC_FUNC_ALLOCA
AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h limits.h netinet/tcp.h stddef.h stdint.h stdlib.h string.h sys/socket.h sys/time.h syslog.h unistd.h sys/poll.h], [], [AC_MSG_ERROR([missing a required header])])