[ --disable-worldscore disable worldscore support], worldscore=no, AC_DEFINE(WORLD_SCORE, 1, [Allow the game to send scores to the score server]))
AC_ARG_ENABLE(chuukei,
[ --enable-chuukei enable internet chuukei support], AC_DEFINE(CHUUKEI, 1, [Chuukei mode]))
+AC_ARG_ENABLE([pch],
+[ --disable-pch disable use of precompiled headers],
+enable_pch=no, enable_pch=yes)
+AM_CONDITIONAL([PCH], [test x$enable_pch = xyes])
dnl Checks for libraries.
dnl Replace `main' with a function in -lncurses: