[PECOFF][Driver] Add -libpath command line option.

The logic to search a library from the library paths will be implemented
in a different patch.

llvm-svn: 186644

2 files changed, 11 insertions, 0 deletions

diff --git a/lld/lib/Driver/WinLinkDriver.cpp b/lld/lib/Driver/WinLinkDriver.cpp
index 0eff1b27384..d1e51f95706 100644
--- a/lld/lib/Driver/WinLinkDriver.cpp
+++ b/lld/lib/Driver/WinLinkDriver.cpp
@@ -254,6 +254,13 @@ bool WinLinkDriver::parse(int argc, const char *argv[],
   if (llvm::opt::Arg *arg = parsedArgs->getLastArg(OPT_entry))
     info.setEntrySymbolName(arg->getValue());
 
+  // Hanlde -libpath
+  for (llvm::opt::arg_iterator it = parsedArgs->filtered_begin(OPT_libpath),
+                               ie = parsedArgs->filtered_end();
+       it != ie; ++it) {
+    info.appendInputSearchPath((*it)->getValue());
+  }
+
   // Handle -force
   if (parsedArgs->getLastArg(OPT_force))
     info.setAllowRemainingUndefines(true);
diff --git a/lld/lib/Driver/WinLinkOptions.td b/lld/lib/Driver/WinLinkOptions.td
index 8669ca8fb65..16ebcd3a9de 100644
--- a/lld/lib/Driver/WinLinkOptions.td
+++ b/lld/lib/Driver/WinLinkOptions.td
@@ -25,6 +25,10 @@ def entry : Separate<["-", "/"], "entry">,
     HelpText<"Name of entry point symbol">;
 def entry_c: Joined<["-", "/"], "entry:">, Alias<entry>;
 
+def libpath : Separate<["-", "/"], "libpath">,
+    HelpText<"Additional library search path">;
+def libpath_c: Joined<["-", "/"], "libpath:">, Alias<libpath>;
+
 def force : Flag<["-", "/"], "force">,
     HelpText<"Allow undefined symbols when creating executables">;