================
@@ -798,6 +798,8 @@ def MD : Flag<["-"], "MD">, Group<M_Group>,
HelpText<"Write a depfile containing user and system headers">;
def MMD : Flag<["-"], "MMD">, Group<M_Group>,
HelpText<"Write a depfile containing user headers">;
+def MMMD : Flag<["-"], "MMMD">, Group<M_Group>,
----------------
yxsamliu wrote:
I am wondering whether we could keep using the old compiler option `-MMD` for
this new behavior, and use triple/language etc to choose the new behavior. The
reason is that users usually use the existing options in their cmake file for
dependency files.
https://github.com/llvm/llvm-project/pull/119513
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