2010-06-21 Rafael Espindola <espindola@google.com>

	* fileread.cc (Input_file::find_fie): New
	(Input_file::open): Use Input_file::find_fie.
	* fileread.h (Input_file::find_fie): New
	* plugin.cc (set_extra_library_path): New.
	(Plugin::load): Add set_extra_library_path to the transfer vector.
	(Plugin_manager::set_extra_library_path): New.
	(Plugin_manager::add_input_file): Use the extra search path if set.
	(set_extra_library_path(): New.
	* plugin.h (Plugin_manager): Add set_extra_library_path and
	extra_search_path_.
2010-06-21  Rafael Espindola  <espindola@google.com>

	* plugin-api.h (ld_plugin_set_extra_library_path): New.
	(ld_plugin_tag): Add LDPT_SET_EXTRA_LIBRARY_PATH.
	(ld_plugin_tv): Add tv_set_extra_library_path.

6 files changed, 155 insertions, 49 deletions

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 46cbdc7..304a4ae 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,16 @@
+2010-06-21  Rafael Espindola  <espindola@google.com>
+
+	* fileread.cc (Input_file::find_fie): New
+	(Input_file::open): Use Input_file::find_fie.
+	* fileread.h (Input_file::find_fie): New
+	* plugin.cc (set_extra_library_path): New.
+	(Plugin::load): Add set_extra_library_path to the transfer vector.
+	(Plugin_manager::set_extra_library_path): New.
+	(Plugin_manager::add_input_file): Use the extra search path if set.
+	(set_extra_library_path(): New.
+	* plugin.h (Plugin_manager): Add set_extra_library_path and
+	extra_search_path_.
+
 2010-06-19  Cary Coutant  <ccoutant@google.com>
 
 	* layout.cc (gdb_sections): Add .debug_types.
diff --git a/gold/fileread.cc b/gold/fileread.cc
index 10e1dec..bfab1a4 100644
--- a/gold/fileread.cc
+++ b/gold/fileread.cc
@@ -841,8 +841,30 @@ File_read::get_mtime()
 #endif
 }
 
-// Open the file.
+// Try to find a file in the extra search dirs. Returns true on success.
+
+static bool
+try_extra_search_path(int* pindex, const Input_file_argument* input_argument,
+                      std::string filename, std::string* found_name,
+                      std::string* namep) {
+  if (input_argument->extra_search_path() == NULL)
+    return false;
+
+  std::string name = input_argument->extra_search_path();
+  if (!IS_DIR_SEPARATOR (name[name.length() - 1]))
+    name += '/';
+  name += filename;
+
+  struct stat dummy_stat;
+  if (*pindex > 0 || ::stat(name.c_str(), &dummy_stat) < 0)
+    return false;
 
+  *found_name = filename;
+  *namep = name;
+  return true;
+}
+
+// Find the actual file.
 // If the filename is not absolute, we assume it is in the current
 // directory *except* when:
 //    A) input_argument_->is_lib() is true;
@@ -851,35 +873,37 @@ File_read::get_mtime()
 // In each, we look in extra_search_path + library_path to find
 // the file location, rather than the current directory.
 
-bool
-Input_file::open(const Dirsearch& dirpath, const Task* task, int *pindex)
+static bool
+find_file(const Dirsearch& dirpath, int* pindex,
+          const Input_file_argument* input_argument, bool* is_in_sysroot,
+          std::string* found_name, std::string* namep)
 {
   std::string name;
 
   // Case 1: name is an absolute file, just try to open it
   // Case 2: name is relative but is_lib is false, is_searched_file is false,
   //         and extra_search_path is empty
-  if (IS_ABSOLUTE_PATH(this->input_argument_->name())
-      || (!this->input_argument_->is_lib()
-	  && !this->input_argument_->is_searched_file()
-	  && this->input_argument_->extra_search_path() == NULL))
+  if (IS_ABSOLUTE_PATH(input_argument->name())
+      || (!input_argument->is_lib()
+	  && !input_argument->is_searched_file()
+	  && input_argument->extra_search_path() == NULL))
     {
-      name = this->input_argument_->name();
-      this->found_name_ = name;
+      name = input_argument->name();
+      *found_name = name;
+      *namep = name;
+      return true;
     }
   // Case 3: is_lib is true or is_searched_file is true
-  else if (this->input_argument_->is_lib()
-	   || this->input_argument_->is_searched_file())
+  else if (input_argument->is_lib()
+	   || input_argument->is_searched_file())
     {
-      // We don't yet support extra_search_path with -l.
-      gold_assert(this->input_argument_->extra_search_path() == NULL);
       std::string n1, n2;
-      if (this->input_argument_->is_lib())
+      if (input_argument->is_lib())
 	{
 	  n1 = "lib";
-	  n1 += this->input_argument_->name();
+	  n1 += input_argument->name();
 	  if (parameters->options().is_static()
-	      || !this->input_argument_->options().Bdynamic())
+	      || !input_argument->options().Bdynamic())
 	    n1 += ".a";
 	  else
 	    {
@@ -888,49 +912,66 @@ Input_file::open(const Dirsearch& dirpath, const Task* task, int *pindex)
 	    }
 	}
       else
-	n1 = this->input_argument_->name();
-      name = dirpath.find(n1, n2, &this->is_in_sysroot_, pindex);
+	n1 = input_argument->name();
+
+      if (try_extra_search_path(pindex, input_argument, n1, found_name, namep))
+        return true;
+
+      if (!n2.empty() && try_extra_search_path(pindex, input_argument, n2,
+                                               found_name, namep))
+        return true;
+
+      // It is not in the extra_search_path.
+      name = dirpath.find(n1, n2, is_in_sysroot, pindex);
       if (name.empty())
 	{
 	  gold_error(_("cannot find %s%s"),
-	             this->input_argument_->is_lib() ? "-l" : "",
-		     this->input_argument_->name());
+	             input_argument->is_lib() ? "-l" : "",
+		     input_argument->name());
 	  return false;
 	}
       if (n2.empty() || name[name.length() - 1] == 'o')
-	this->found_name_ = n1;
+	*found_name = n1;
       else
-	this->found_name_ = n2;
+	*found_name = n2;
+      *namep = name;
+      return true;
     }
   // Case 4: extra_search_path is not empty
   else
     {
-      gold_assert(this->input_argument_->extra_search_path() != NULL);
-
-      // First, check extra_search_path.
-      name = this->input_argument_->extra_search_path();
-      if (!IS_DIR_SEPARATOR (name[name.length() - 1]))
-        name += '/';
-      name += this->input_argument_->name();
-      struct stat dummy_stat;
-      if (*pindex > 0 || ::stat(name.c_str(), &dummy_stat) < 0)
+      gold_assert(input_argument->extra_search_path() != NULL);
+
+      if (try_extra_search_path(pindex, input_argument, input_argument->name(),
+                                found_name, namep))
+        return true;
+
+      // extra_search_path failed, so check the normal search-path.
+      int index = *pindex;
+      if (index > 0)
+        --index;
+      name = dirpath.find(input_argument->name(), "",
+                          is_in_sysroot, &index);
+      if (name.empty())
         {
-          // extra_search_path failed, so check the normal search-path.
-	  int index = *pindex;
-	  if (index > 0)
-	    --index;
-          name = dirpath.find(this->input_argument_->name(), "",
-			      &this->is_in_sysroot_, &index);
-          if (name.empty())
-            {
-              gold_error(_("cannot find %s"),
-			 this->input_argument_->name());
-	      return false;
-            }
-	  *pindex = index + 1;
+          gold_error(_("cannot find %s"),
+                     input_argument->name());
+          return false;
         }
-      this->found_name_ = this->input_argument_->name();
+      *pindex = index + 1;
+      return true;
     }
+}
+
+// Open the file.
+
+bool
+Input_file::open(const Dirsearch& dirpath, const Task* task, int *pindex)
+{
+  std::string name;
+  if (!find_file(dirpath, pindex, this->input_argument_, &this->is_in_sysroot_,
+                 &this->found_name_, &name))
+    return false;
 
   // Now that we've figured out where the file lives, try to open it.
 
diff --git a/gold/plugin.cc b/gold/plugin.cc
index 1c33b12..c9e55ef 100644
--- a/gold/plugin.cc
+++ b/gold/plugin.cc
@@ -81,6 +81,9 @@ static enum ld_plugin_status
 add_input_library(const char *pathname);
 
 static enum ld_plugin_status
+set_extra_library_path(const char *path);
+
+static enum ld_plugin_status
 message(int level, const char *format, ...);
 
 };
@@ -127,7 +130,7 @@ Plugin::load()
   sscanf(ver, "%d.%d", &major, &minor);
 
   // Allocate and populate a transfer vector.
-  const int tv_fixed_size = 15;
+  const int tv_fixed_size = 16;
   int tv_size = this->args_.size() + tv_fixed_size;
   ld_plugin_tv *tv = new ld_plugin_tv[tv_size];
 
@@ -202,6 +205,10 @@ Plugin::load()
   tv[i].tv_u.tv_add_input_library = add_input_library;
 
   ++i;
+  tv[i].tv_tag = LDPT_SET_EXTRA_LIBRARY_PATH;
+  tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path;
+
+  ++i;
   tv[i].tv_tag = LDPT_NULL;
   tv[i].tv_u.tv_val = 0;
 
@@ -418,6 +425,15 @@ Plugin_manager::release_input_file(unsigned int handle)
   return LDPS_OK;
 }
 
+// Add a new library path.
+
+ld_plugin_status
+Plugin_manager::set_extra_library_path(const char *path)
+{
+  this->extra_search_path_ = std::string(path);
+  return LDPS_OK;
+}
+
 // Add a new input file.
 
 ld_plugin_status
@@ -427,7 +443,11 @@ Plugin_manager::add_input_file(const char *pathname, bool is_lib)
                            (is_lib
                             ? Input_file_argument::INPUT_FILE_TYPE_LIBRARY
                             : Input_file_argument::INPUT_FILE_TYPE_FILE),
-                           "", false, this->options_);
+                           (is_lib
+                            ? this->extra_search_path_.c_str()
+                            : ""),
+                           false,
+                           this->options_);
   Input_argument* input_argument = new Input_argument(file);
   Task_token* next_blocker = new Task_token(true);
   next_blocker->add_blocker();
@@ -1038,6 +1058,16 @@ add_input_library(const char *pathname)
   return parameters->options().plugins()->add_input_file(pathname, true);
 }
 
+// Set the extra library path to be used by libraries added via
+// add_input_library
+
+static enum ld_plugin_status
+set_extra_library_path(const char *path)
+{
+  gold_assert(parameters->options().has_plugins());
+  return parameters->options().plugins()->set_extra_library_path(path);
+}
+
 // Issue a diagnostic message from a plugin.
 
 static enum ld_plugin_status
diff --git a/gold/plugin.h b/gold/plugin.h
index 99e6d95..81c3be6 100644
--- a/gold/plugin.h
+++ b/gold/plugin.h
@@ -127,7 +127,7 @@ class Plugin_manager
       plugin_input_file_(), in_replacement_phase_(false),
       options_(options), workqueue_(NULL), task_(NULL), input_objects_(NULL),
       symtab_(NULL), layout_(NULL), dirpath_(NULL), mapfile_(NULL),
-      this_blocker_(NULL)
+      this_blocker_(NULL), extra_search_path_()
   { this->current_ = plugins_.end(); }
 
   ~Plugin_manager();
@@ -232,6 +232,10 @@ class Plugin_manager
   ld_plugin_status
   add_input_file(const char *pathname, bool is_lib);
 
+  // Set the extra library path.
+  ld_plugin_status
+  set_extra_library_path(const char *path);
+
   // Return TRUE if we are in the replacement phase.
   bool
   in_replacement_phase() const
@@ -275,6 +279,10 @@ class Plugin_manager
   Dirsearch* dirpath_;
   Mapfile* mapfile_;
   Task_token* this_blocker_;
+
+  // An extra directory to seach for the libraries passed by
+  // add_input_library.
+  std::string extra_search_path_;
 };
 
 
diff --git a/include/ChangeLog b/include/ChangeLog
index decb57a..f4191af 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,9 @@
+2010-06-21  Rafael Espindola  <espindola@google.com>
+
+	* plugin-api.h (ld_plugin_set_extra_library_path): New.
+	(ld_plugin_tag): Add LDPT_SET_EXTRA_LIBRARY_PATH.
+	(ld_plugin_tv): Add tv_set_extra_library_path.
+
 2010-06-21  Jakub Jelinek  <jakub@redhat.com>
 
 	* dwarf2.h (enum dwarf_type): Add DW_ATE_UTF.
diff --git a/include/plugin-api.h b/include/plugin-api.h
index 55cfe25..a0cf5f4 100644
--- a/include/plugin-api.h
+++ b/include/plugin-api.h
@@ -228,6 +228,12 @@ typedef
 enum ld_plugin_status
 (*ld_plugin_add_input_library) (const char *libname);
 
+/* The linker's interface for adding a library path that should be searched.  */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_set_extra_library_path) (const char *path);
+
 /* The linker's interface for issuing a warning or error message.  */
 
 typedef
@@ -261,7 +267,8 @@ enum ld_plugin_tag
   LDPT_GET_INPUT_FILE,
   LDPT_RELEASE_INPUT_FILE,
   LDPT_ADD_INPUT_LIBRARY,
-  LDPT_OUTPUT_NAME
+  LDPT_OUTPUT_NAME,
+  LDPT_SET_EXTRA_LIBRARY_PATH
 };
 
 /* The plugin transfer vector.  */
@@ -283,6 +290,7 @@ struct ld_plugin_tv
     ld_plugin_get_input_file tv_get_input_file;
     ld_plugin_release_input_file tv_release_input_file;
     ld_plugin_add_input_library tv_add_input_library;
+    ld_plugin_set_extra_library_path tv_set_extra_library_path;
   } tv_u;
 };