AC_SUBST(C_SWITCH_X_SITE)
AC_SUBST(CFLAGS)
-AC_DEFINE(config_machfile, \"${machfile}\")
-AC_DEFINE(config_opsysfile, \"${opsysfile}\")
+dnl This is hopefully a temporary hack. In autoconf version 1.3,
+dnl the second argument to AC_DEFINE is quoted in every which way,
+dnl so (as far as I can tell) there's no way to compute the value
+dnl the CPP macro should receive. We cripple that quoting for a
+dnl bit, invoke AC_DEFINE, and then uncripple it.
+
+define([hold_ac_define_sedquote], defn([AC_DEFINE_SEDQUOTE]))
+define([AC_DEFINE_SEDQUOTE],[$1])
+AC_DEFINE(config_machfile, "\"${machfile}\"")
+AC_DEFINE(config_opsysfile, "\"${opsysfile}\"")
+define([AC_DEFINE_SEDQUOTE],hold_ac_define_sedquote)
+
AC_DEFINE(LD_SWITCH_X_SITE, ${LD_SWITCH_X_SITE})
AC_DEFINE(C_SWITCH_X_SITE, ${C_SWITCH_X_SITE})
[