diff -ru a/pkg.c b/pkg.c
--- a/pkg.c	2010-05-08 21:14:17.000000000 +0100
+++ b/pkg.c	2010-06-05 12:32:08.006581822 +0100
@@ -751,13 +751,9 @@
 {
   GSList *requires = NULL;
   GSList *conflicts = NULL;
-  GSList *system_directories = NULL;
   GSList *iter;
   GSList *requires_iter;
   GSList *conflicts_iter;
-  GSList *system_dir_iter = NULL;
-  int count;
-  const gchar *c_include_path;
 
   /* Be sure we have the required fields */
 
@@ -865,107 +861,6 @@
     }
   
   g_slist_free (requires);
-
-  /* We make a list of system directories that gcc expects so we can remove
-   * them.
-   */
-#ifndef G_OS_WIN32
-  system_directories = g_slist_append (NULL, g_strdup ("/usr/include"));
-#endif
-
-  c_include_path = g_getenv ("C_INCLUDE_PATH");
-  if (c_include_path != NULL)
-    {
-      system_directories = add_env_variable_to_list (system_directories, c_include_path);
-    }
-  
-  c_include_path = g_getenv ("CPLUS_INCLUDE_PATH");
-  if (c_include_path != NULL)
-    {
-      system_directories = add_env_variable_to_list (system_directories, c_include_path);
-    }
-
-  count = 0;
-  iter = pkg->I_cflags;
-  while (iter != NULL)
-    {
-      gint offset = 0;
-      /* we put things in canonical -I/usr/include (vs. -I /usr/include) format,
-       * but if someone changes it later we may as well be robust
-       */
-      if (((strncmp (iter->data, "-I", 2) == 0) && (offset = 2))||
-          ((strncmp (iter->data, "-I ", 3) == 0) && (offset = 3)))
-        {
-	  if (offset == 0)
-	    {
-	      iter = iter->next;
-	      continue;
-	    }
-
-	  system_dir_iter = system_directories;
-	  while (system_dir_iter != NULL)
-	    {
-	      if (strcmp (system_dir_iter->data,
-                          ((char*)iter->data) + offset) == 0)
-		{
-		  debug_spew ("Package %s has %s in Cflags\n",
-			      pkg->name, (gchar *)iter->data);
-		  if (g_getenv ("PKG_CONFIG_ALLOW_SYSTEM_CFLAGS") == NULL)
-		    {
-		      debug_spew ("Removing %s from cflags for %s\n", iter->data, pkg->key);
-		      ++count;
-		      iter->data = NULL;
-		      
-		      break;
-		    }
-		}
-	      system_dir_iter = system_dir_iter->next;
-	    }
-        }
-
-      iter = iter->next;
-    }
-
-  while (count)
-    {
-      pkg->I_cflags = g_slist_remove (pkg->I_cflags, NULL);
-      --count;
-    }
-
-  g_slist_foreach (system_directories, (GFunc) g_free, NULL);
-  g_slist_free (system_directories);
-
-#ifdef PREFER_LIB64
-#define SYSTEM_LIBDIR "/usr/lib64"
-#else
-#define SYSTEM_LIBDIR "/usr/lib"
-#endif
-  count = 0;
-  iter = pkg->L_libs;
-  while (iter != NULL)
-    {
-      if (strcmp (iter->data, "-L" SYSTEM_LIBDIR) == 0 ||
-          strcmp (iter->data, "-L " SYSTEM_LIBDIR) == 0)
-        {
-          debug_spew ("Package %s has -L" SYSTEM_LIBDIR " in Libs\n",
-                      pkg->name);
-          if (g_getenv ("PKG_CONFIG_ALLOW_SYSTEM_LIBS") == NULL)
-            {              
-              iter->data = NULL;
-              ++count;
-              debug_spew ("Removing -L" SYSTEM_LIBDIR " from libs for %s\n", pkg->key);
-            }
-        }
-
-      iter = iter->next;
-    }
-#undef SYSTEM_LIBDIR
-
-  while (count)
-    {
-      pkg->L_libs = g_slist_remove (pkg->L_libs, NULL);
-      --count;
-    }
 }
 
 static char*