[gtk+-2.0 gtk-vnc-1.0 glib-2.0 libxml-2.0 gnutls gthread-2.0 libcurl])
dnl Header files.
-AC_CHECK_HEADERS([sys/socket.h sys/un.h windows.h])
+AC_CHECK_HEADERS([netdb.h netinet/in.h sys/socket.h sys/un.h windows.h])
dnl Optional functions.
-AC_CHECK_FUNCS([socketpair fork])
+AC_CHECK_FUNCS([socket gethostbyname htons connect])
dnl Default location for CA certificate bundle.
AC_ARG_ENABLE([cainfo],