+dnl set heap analyses support
+dnl -------------------------
+AC_MSG_CHECKING([for heapanalysis])
+AC_ARG_ENABLE(heapanalysis, [ --enable-heapanalysis Compile with heap analysis.],
+ [enable_heapanalysis=$enableval], [enable_heapanalysis="no"])
+if test "$enable_heapanalysis" = "no"; then
+ AC_MSG_RESULT([disabled])
+else
+ AC_DEFINE(DO_HEAPANALYSIS)
+ AC_MSG_RESULT([enabled])
+fi
+AC_SUBST(enable_heapanalysis)
+
+dnl set backend support
+dnl -------------------------
+AC_ARG_ENABLE(backend, [ --enable-backend Compile with backend facility.],
+[if test "$enableval" = "yes"; then
+ AC_DEFINE(FIRM_BACKEND)
+fi], [enable_backend="yes"])
+AC_SUBST(enable_backend)
+