Add support for -rdynamic.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118384 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Options.td

@@ -566,6 +566,7 @@ def read__only__relocs : Separate<"-read_only_relocs">;
 def remap : Flag<"-remap">;
 def rewrite_objc : Flag<"-rewrite-objc">, Flags<[DriverOption]>,
   HelpText<"Rewrite Objective-C source to C++">;
+def rdynamic : Flag<"-rdynamic">;
 def rpath : Separate<"-rpath">, Flags<[LinkerInput]>;
 def r : Flag<"-r">;
 def save_temps : Flag<"-save-temps">, Flags<[DriverOption]>,

lib/Driver/Tools.cpp

@@ -3151,6 +3151,9 @@ void linuxtools::Link::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back(A->getValue(Args));
   }
 
+  if (Args.hasArg(options::OPT_rdynamic))
+    CmdArgs.push_back("-export-dynamic");
+
   for (std::vector<std::string>::const_iterator i = ToolChain.ExtraOpts.begin(),
          e = ToolChain.ExtraOpts.end();
        i != e; ++i)