+ GLIBCXX_CHECK_WCHAR_T_SUPPORT
+
+ # For LFS.
-+ AC_DEFINE(HAVE_INT64_T)
++ GLIBCXX_CHECK_INT64_T
+ case "$target" in
+ *-uclinux*)
+ # Don't enable LFS with uClinux
+ ;;
+ *)
-+ AC_DEFINE(_GLIBCXX_USE_LFS)
++ GLIBCXX_USE_LFS
+ esac
+
+ # For showmanyc_helper().