+BISON_COMPAT=
+AS_IF([test x"$dx_cv_bison_api_header_include" = x"yes"],
+ [BISON_COMPAT="'--define=api.header.include={\"\$(*F).h\"}'"])
+AS_IF([test x"$dx_cv_bison_warn_no_deprecated" = x"yes"],
+ [AS_VAR_APPEND([BISON_COMPAT], ["${BISON_COMPAT:+ }-Wno-deprecated"])])
+AC_SUBST([BISON_COMPAT])
+