+dnl enable Firm hooks
+dnl -------------
+AC_ARG_ENABLE(hooks,
+[ --disable-hooks disable Firm hooks],
+[if test "$enableval" = yes; then
+ AC_DEFINE(FIRM_ENABLE_HOOKS)
+fi],
+AC_DEFINE(FIRM_ENABLE_HOOKS)
+)
+
+dnl enable Firm inplace edges
+dnl -------------
+AC_ARG_ENABLE(inplace_edges,
+[ --disable-inplace-edges disable Firm inplace edges],
+[if test "$enableval" = yes; then
+ AC_DEFINE(FIRM_EDGES_INPLACE)
+fi],
+AC_DEFINE(FIRM_EDGES_INPLACE)
+)
+