[MIPS] Support for building tests for MIPS

tests/callingconv_ppapi/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.
 
 # Calling convention test to ensure interoperabilty of nacl-gcc and
 # pnacl generated code
 
 Import('env')
 
 # This test does not make any sense for pure pnacl
 if not env.Bit('bitcode'):
   Return()
 
 if env.Bit('pnacl_generate_pexe'):
   Return()
 
 if env.Bit('built_elsewhere'):
   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()
+
 env_pnacl_cc = env.Clone()
 env_pnacl_cc.PNaClForceNative()
 # for ppapi headers which include other ppapi headers
 env_pnacl_cc.Append(CPPPATH='${SCONSTRUCT_DIR}/tests/callingconv_ppapi')
 
 env_pnacl_cc_calling = env_pnacl_cc.Clone()
 env_pnacl_cc_calling.Append(
     CCFLAGS=['-Xtranslator', '--cc-rewrite'],
     # force invoked functions to have "gcc" prefix
     CPPDEFINES=['INVOCATION_PREFIX=gcc'])
@@ skipping 58 matching lines @@
 for name, objs in TARGETS:
   nexe = env_pnacl_cc.ComponentProgram('callingconv_ppapi_%s' % name,
                                        objs,
                                        EXTRA_LIBS=['${NONIRT_LIBS}'])
   test= env.CommandSelLdrTestNacl('callingconv_ppapi_%s.out' % name,
                                   nexe,
                                   stdout_golden=env.File('golden.out'))
   env.AddNodeToTestSuite(test,
                          ['medium_tests', 'nonpexe_tests'],
                          'run_callingconv_ppapi_%s_test' % name)