PNaCl Dynamic Linking: Using unordered_set to disallow duplicate modules.

tests/pnacl_dynamic_loading/nacl.scons

 # -*- python -*-
 # Copyright (c) 2014 The Native Client 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('env')
 
 if not env.Bit('bitcode'):
   Return()
 # Translating the PSO to an ELF DSO doesn't work on x86-64 yet.  The
@@ skipping 94 matching lines @@
 
 test_pll_a = MakeAndTranslatePll('test_pll_a', 'test_pll_a.c')
 test_pll_b = MakeAndTranslatePll('test_pll_b', 'test_pll_b.c')
 
 pll_loader_test = env.ComponentProgram(
     'pll_loader_test', ['pll_loader_test.cc'],
     EXTRA_LIBS=['${NONIRT_LIBS}', 'pll_loader_lib'])
 
 node = env.CommandSelLdrTestNacl(
     'pll_loader_test.out', pll_loader_test,
-    [test_pll_a, test_pll_b, test_pll_tls],
+    [Dir('.').abspath, 'test_pll_a.so', 'test_pll_b.so', 'test_pll_tls.so'],
     # Add '-a' to enable filesystem access for opening DSOs.
-    sel_ldr_flags=['-a'])
+    sel_ldr_flags=['-a'],
+    extra_deps=[test_pll_a, test_pll_b, test_pll_tls])
 env.AddNodeToTestSuite(
     node, ['small_tests', 'toolchain_tests'],
     'run_pll_loader_test', is_broken=is_broken)
 
 
 pll_libc = env.Command(
     'libc${OBJSUFFIX}',
     # libnacl should come first so that it can override definitions in libc.
     [env.File('${LIB_DIR}/libnacl.a'),
      env.File('${NACL_SDK_LIB}/libc.a'),
@@ skipping 14 matching lines @@
 
 node = env.CommandSelLdrTestNacl(
     'pll_hello_world_test.out', pll_loader,
     [translated_pll_libc, translated_pll_hello_world],
     # Add '-a' to enable filesystem access for opening DSOs.
     sel_ldr_flags=['-a'],
     stdout_golden=env.File('../hello_world/hello_world.stdout'))
 env.AddNodeToTestSuite(
     node, ['small_tests', 'toolchain_tests'],
     'run_pll_hello_world_test', is_broken=is_broken)