AC_CHECK_HEADERS(sys/types.h sys/stat.h sys/time.h stddef.h)
AC_CHECK_HEADERS(netinet/in.h netinet/tcp.h xti.h netdb.h)
AC_CHECK_HEADERS(pwd.h grp.h termcap.h paths.h)
-AC_CHECK_HEADERS(ncurses.h signal.h ctype.h regex.h utime.h)
-AC_CHECK_HEADERS(arpa/inet.h sys/mman.h limits.h termios.h)
+AC_CHECK_HEADERS(ncurses.h signal.h ctype.h regex.h utime.h iconv.h)
+AC_CHECK_HEADERS(arpa/inet.h sys/mman.h limits.h termios.h locale.h langinfo.h)
# Data type checking
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(getopt_long time)
AC_CHECK_FUNCS(chmod stat fstat getenv putenv strerror ctime gettimeofday)
AC_CHECK_FUNCS(getpid getgid getsid getpgid getpgrp getuid setgroups initgroups)
-AC_CHECK_FUNCS(strchr strstr strcpy strncpy memcpy memset memmove utime)
-AC_CHECK_FUNCS(pthread_create)
+AC_CHECK_FUNCS(strchr strstr strcpy strncpy memcpy memset memmove utime iconv)
+AC_CHECK_FUNCS(pthread_create nl_langinfo)
# SIM support checking
# XXX These needs to be changed as more supported platforms appear.