[MIPS] Support for building tests for MIPS

tests/callingconv/nacl.scons

 # -*- python -*-
 # Copyright 2012 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')
 
 # This test does not make any sense for pure pnacl
 if env.Bit('bitcode') and env.Bit('pnacl_generate_pexe'):
   Return()
 
+# This test is disabled for MIPS because we do not have a MIPS-enabled nacl-gcc
+# to test PNaCl against.
+if env.Bit('target_mips32'):
+  Return()
+
 # If this test is failing on the bots, you can find the seed
 # from the output of the bot. Look for "--seed=".
 # To reproduce the exact problem, set settings['seed'] below
 # to the fixed seed you found on the bot.
 
 #
 # Calling Convention Test
 #
 # The "generate.py" script generates 4 modules (module0.c ... module3.c).
 # Each module has functions, and calls to other functions in other modules.
@@ skipping 120 matching lines @@
                                  EXTRA_LIBS=['${NONIRT_LIBS}'])
 
 node = link_env.CommandSelLdrTestNacl(
          'callingconv.out',
          prog,
          stdout_golden=nodes[0])
 
 env.AddNodeToTestSuite(node, ['medium_tests', 'nonpexe_tests'],
                        'run_callingconv_test',
                        is_broken=is_broken)