AC_CHECK_LIB(curses, main, [curses=true], [curses=false])
AC_CHECK_LIB(ncurses, main, [ncurses=true], [ncurses=false])
AC_CHECK_LIB(g2, main, [g2=true], [g2=false])
-AC_CHECK_LIB(readline, main, [readline=true; AC_DEFINE(HAVE_READLINE)], [readline=false])
+AC_CHECK_LIB(readline, main, [readline=true; AC_DEFINE(HAVE_READLINE)], [readline=false], [-lcurses])
AC_CHECK_LIB(ncurses, main, [ncurses=true; AC_DEFINE(HAVE_NCURSES)], [ncurses=false])
AC_CHECK_LIB(curses, main, [curses=true; AC_DEFINE(HAVE_CURSES)], [curses=false])
wxwin=false
CXXFLAGS="$CFLAGS"
-AC_OUTPUT(Makefile libctgraphics/Makefile libctsupport/Makefile libctsim/Makefile Makefile man/Makefile doc/Makefile cgi-bin/ctsim.cgi cgi-bin/Makefile html/simulate.html html/Makefile include/Makefile getopt/Makefile tools/sample-ctsim.sh cgi-bin/ctsim.conf tools/Makefile src/Makefile)
+AC_OUTPUT(Makefile libctgraphics/Makefile libctsupport/Makefile libctsim/Makefile Makefile man/Makefile doc/Makefile cgi-bin/ctsim.cgi cgi-bin/Makefile html/simulate.html html/Makefile include/Makefile getopt/Makefile tools/sample-ctsim.sh cgi-bin/ctsim.conf tools/Makefile src/Makefile helical/Makefile helical/sample-helical.sh)