Special-case paths that appear in libs by not prefixing them with -l.

tools/gn/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//testing/test.gni")
 
 defines = [ "GN_BUILD" ]
 
 static_library("gn_lib") {
   configs += [ "//build/config:precompiled_headers" ]
@@ skipping 78 matching lines @@
     "input_file.h",
     "input_file_manager.cc",
     "input_file_manager.h",
     "item.cc",
     "item.h",
     "label.cc",
     "label.h",
     "label_pattern.cc",
     "label_pattern.h",
     "label_ptr.h",
+    "lib_file.cc",
+    "lib_file.h",
     "loader.cc",
     "loader.h",
     "location.cc",
     "location.h",
     "ninja_action_target_writer.cc",
     "ninja_action_target_writer.h",
     "ninja_binary_target_writer.cc",
     "ninja_binary_target_writer.h",
     "ninja_build_writer.cc",
     "ninja_build_writer.h",
@@ skipping 204 matching lines @@
 
 executable("generate_test_gn_data") {
   sources = [
     "generate_test_gn_data.cc",
   ]
   deps = [
     "//base",
     "//build/config/sanitizers:deps",
   ]
 }