# Checks for header files.
AC_HEADER_STDC
AC_HEADER_TIME
-AC_CHECK_HEADERS([math.h signal.h fcntl.h inttypes.h netdb.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
+AC_CHECK_HEADERS([math.h signal.h fcntl.h inttypes.h netdb.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h locale.h langinfo.h])
# This sucks, but what can I do..?
AC_CHECK_HEADERS(netinet/in_systm.h, [], [],