http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45258
--- Comment #15 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-01-10 20:27:22 UTC --- Iain, I was referring to the conceptual problems of creating a version-compare-remove-outfile spec function. For any given OS release there is a different set of symlinks for libSystem which are visible to the compiler regardless of the setting of -mmacosx-version-min=. So one would really have to have version-compare-remove-outfile look only at the running OS version to decide properly which symlinks are present to prune.
