[mach-o] wire up -t option

llvm-svn: 214414

lld/lib/Driver/DarwinLdDriver.cpp

@@ -288,6 +288,10 @@ bool DarwinLdDriver::parse(int argc, const char *argv[],
   if (parsedArgs->getLastArg(OPT_print_atoms))
     ctx.setPrintAtoms();
 
+  // Handle -t (trace) option.
+  if (parsedArgs->getLastArg(OPT_t))
+    ctx.setLogInputFiles(true);
+
   // In -test_libresolution mode, we'll be given an explicit list of paths that
   // exist. We'll also be expected to print out information about how we located
   // libraries and so on that the user specified, but not to actually do any

lld/lib/Driver/DarwinLdOptions.td

@@ -94,6 +94,8 @@ def output : Separate<["-"], "o">, HelpText<"Output file path">;
 def arch : Separate<["-"], "arch">, HelpText<"Architecture to link">;
 def sectalign : MultiArg<["-"], "sectalign", 3>,
                 HelpText<"alignment for segment/section">;
+def t : Flag<["-"], "t">,
+     HelpText<"Print the names of the input files as ld processes them">;
 
 
 // extras