[llvm-commits] [llvm] r106674 - /llvm/trunk/tools/gold/gold-plugin.cpp

[Rafael Espindola]

Author: rafael
Date: Wed Jun 23 15:20:59 2010
New Revision: 106674

URL: http://llvm.org/viewvc/llvm-project?rev=106674&view=rev
Log:
Add an extra-library-path option to the plugin. This is used to support
having a library both as bitcode and native code. We want to use the
bitcode first, but if codegen produces new undefined references we have to use
the native code to satisfy those references.

Gold has no notion of bitcode and native search directories, so instead it has
an API where the plugin can instruct it to look for the libraries it is passing
to it. This patch uses that API.

Modified:
    llvm/trunk/tools/gold/gold-plugin.cpp

Modified: llvm/trunk/tools/gold/gold-plugin.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/gold/gold-plugin.cpp?rev=106674&r1=106673&r2=106674&view=diff
==============================================================================
--- llvm/trunk/tools/gold/gold-plugin.cpp (original)
+++ llvm/trunk/tools/gold/gold-plugin.cpp Wed Jun 23 15:20:59 2010
@@ -42,6 +42,7 @@
   ld_plugin_get_symbols get_symbols = NULL;
   ld_plugin_add_input_file add_input_file = NULL;
   ld_plugin_add_input_library add_input_library = NULL;
+  ld_plugin_set_extra_library_path set_extra_library_path = NULL;
   ld_plugin_message message = discard_message;
 
   int api_version = 0;
@@ -66,6 +67,7 @@
   static std::string bc_path;
   static std::string as_path;
   static std::vector<std::string> pass_through;
+  static std::string extra_library_path;
   // Additional options to pass into the code generator.
   // Note: This array will contain all plugin options which are not claimed
   // as plugin exclusive to pass to the code generator.
@@ -88,6 +90,8 @@
       } else {
         as_path = opt.substr(strlen("as="));
       }
+    } else if (opt.startswith("extra-library-path=")) {
+      extra_library_path = opt.substr(strlen("extra_library_path="));
     } else if (opt.startswith("pass-through=")) {
       llvm::StringRef item = opt.substr(strlen("pass-through="));
       pass_through.push_back(item.str());
@@ -198,6 +202,9 @@
       case LDPT_ADD_INPUT_LIBRARY:
         add_input_library = tv->tv_u.tv_add_input_file;
         break;
+      case LDPT_SET_EXTRA_LIBRARY_PATH:
+        set_extra_library_path = tv->tv_u.tv_set_extra_library_path;
+        break;
       case LDPT_MESSAGE:
         message = tv->tv_u.tv_message;
         break;
@@ -445,6 +452,12 @@
     return LDPS_ERR;
   }
 
+  if (!options::extra_library_path.empty() &&
+      set_extra_library_path(options::extra_library_path.c_str()) != LDPS_OK) {
+    (*message)(LDPL_ERROR, "Unable to set the extra library path.");
+    return LDPS_ERR;
+  }
+
   for (std::vector<std::string>::iterator i = options::pass_through.begin(),
                                           e = options::pass_through.end();
        i != e; ++i) {