Add wrapper library for the nacl_irt_exception_handling IRT interface

src/untrusted/nacl/nacl.scons

 # -*- python -*-
 # Copyright (c) 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')
 
 # NACL_GC_WRAP_SYSCALL uses ({...}) syntax.
 env.FilterOut(CCFLAGS=['-pedantic'])
@@ skipping 84 matching lines @@
 
 env.AddLibraryToSdk(libnacl)
 header_install = env.AddHeaderToSdk(['nacl_startup.h', 'nacl_thread.h'])
 env.Requires('libnacl', header_install)
 
 libnacl_dyncode = env.NaClSdkLibrary('libnacl_dyncode', ['dyncode.c'])
 env.AddLibraryToSdk(libnacl_dyncode)
 env.AddHeaderToSdk(['nacl_dyncode.h'])
 env.ComponentLibrary('libnacl_dyncode_private', ['dyncode_private.c'])
 
+libnacl_exception = env.NaClSdkLibrary('libnacl_exception',
+                                       ['nacl_exception.c'])
+env.AddLibraryToSdk(libnacl_exception)
+
 libnacl_list_mappings = env.NaClSdkLibrary(
     'libnacl_list_mappings', ['list_mappings.c'])
 env.AddLibraryToSdk(libnacl_list_mappings)
 env.AddHeaderToSdk(['nacl_list_mappings.h'])
 env.ComponentLibrary(
     'libnacl_list_mappings_private', ['list_mappings_private.c'])
 
 env.AddHeaderToSdk(['pnacl.h'])
 
 
@@ skipping 30 matching lines @@
   # Putting everything important into a single .o file avoids this scenario.
   private_combine = [env.ComponentObject(module, '%s.c' % module)
                      for module in ['gc_hooks_private',
                                     'sbrk_private',
                                     'sys_private']]
   sys_private.append(env.Command('combined_private${OBJSUFFIX}',
                                  private_combine,
                                  '${LD} -relocatable -o ${TARGET} ${SOURCES}'))
 
 env.ComponentLibrary('libnacl_sys_private', sys_private)