-# Though the `GC_do_blocking ()' symbol is present in GC 7.1, it is not
-# declared, and has a different type (returning void instead of
-# void*).
-AC_CHECK_DECL([GC_do_blocking],
- [AC_DEFINE([HAVE_DECL_GC_DO_BLOCKING], [1],
- [Define this if the `GC_do_blocking ()' function is declared])],
- [],
- [#include <gc/gc.h>])
-
-# `GC_fn_type' is not available in GC 7.1 and earlier.
-AC_CHECK_TYPE([GC_fn_type],
- [AC_DEFINE([HAVE_GC_FN_TYPE], [1],
- [Define this if the `GC_fn_type' type is available.])],
- [],
- [#include <gc/gc.h>])
-
-# `GC_stack_base' is not available in GC 7.1 and earlier.
-AC_CHECK_TYPE([struct GC_stack_base],
- [AC_DEFINE([HAVE_GC_STACK_BASE], [1],
- [Define this if the `GC_stack_base' type is available.])],
- [],
- [#include <gc/gc.h>])