[Issue 5278] gentoo's 'hardended' gcc doesn't work with dmd

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=5278
Issue 5278 depends on issue 7678, which changed state.

Issue 7678 Summary: Add -cflags switch for DMD that allows passing flags to GCC or ${CC}
https://issues.dlang.org/show_bug.cgi?id=7678

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

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