Add Android cross-compilation support to top-level Makefile

src/platform-linux.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1133 matching lines @@
 #else
     syscall(SYS_tgkill, vm_tgid_, tid, SIGPROF);
 #endif
   }
 
   void Sleep(SleepInterval full_or_half) {
     // Convert ms to us and subtract 100 us to compensate delays
     // occuring during signal delivery.
     useconds_t interval = interval_ * 1000 - 100;
     if (full_or_half == HALF_INTERVAL) interval /= 2;
+#if defined(ANDROID)
+    usleep(interval);
+#else
     int result = usleep(interval);
 #ifdef DEBUG
     if (result != 0 && errno != EINTR) {
       fprintf(stderr,
               "SignalSender usleep error; interval = %u, errno = %d\n",
               interval,
               errno);
       ASSERT(result == 0 || errno == EINTR);
     }
-#endif
+#endif  // DEBUG
     USE(result);
+#endif  // ANDROID
   }
 
   const int vm_tgid_;
   const int interval_;
   RuntimeProfilerRateLimiter rate_limiter_;
 
   // Protects the process wide state below.
   static Mutex* mutex_;
   static SignalSender* instance_;
   static bool signal_handler_installed_;
@@ skipping 33 matching lines @@
 
 
 void Sampler::Stop() {
   ASSERT(IsActive());
   SignalSender::RemoveActiveSampler(this);
   SetActive(false);
 }
 
 
 } }  // namespace v8::internal