+########################################################################### curses
+have_ncurses="yes"
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+AC_ARG_WITH(ncurses_headers, [AC_HELP_STRING(--with-ncurses-headers=dir,
+ [look for ncurses.h also in dir])])
+if test -n "$with_ncurses_headers"; then
+ ncurses_cppflags="-I$with_ncurses_headers"
+ CPPFLAGS="$CPPFLAGS $ncurses_cppflags"
+fi
+AC_ARG_WITH(ncurses_libs, [AC_HELP_STRING(--with-ncurses-libs=dir,
+ [look for libncurses also in dir])])
+if test -n "$with_ncurses_libs"; then
+ ncurses_libs="-L$with_ncurses_libs"
+ LDFLAGS="$LDFLAGS $ncurses_libs"
+fi
+AC_CHECK_HEADER(curses.h, [], [
+ have_ncurses="no"
+])
+AC_CHECK_LIB([ncurses], [initscr], [], [
+ have_ncurses="no"
+])
+if test "$have_ncurses" = "yes"; then
+ AC_SUBST(ncurses_cppflags)
+ AC_SUBST(ncurses_libs)
+ AC_DEFINE(HAVE_NCURSES, 1, [define to 1 to turn on ncurses support])
+ extras="$extras para_gui"
+else
+ AC_MSG_WARN([cannot build para_gui])
+fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"