Search for a native extension for the host architecture

runtime/bin/platform.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef BIN_PLATFORM_H_
 #define BIN_PLATFORM_H_
 
 #include "bin/builtin.h"
+#include "platform/globals.h"
 
 namespace dart {
 namespace bin {
 
 class Platform {
  public:
   // Perform platform specific initialization.
   static bool Initialize();
 
   // Returns the number of processors on the machine.
   static int NumberOfProcessors();
 
   // Returns a string representing the operating system ("linux",
-  // "macos" or "windows"). The returned string should not be
+  // "macos", "windows", or "android"). The returned string should not be
   // deallocated by the caller.
   static const char* OperatingSystem();
 
+  // Returns the architecture name of the processor the VM is running on
+  // (ia32, x64, arm, arm64, or mips).
+  static const char* HostArchitecture() {
+#if defined(HOST_ARCH_ARM)
+    return "arm";
+#elif defined(HOST_ARCH_ARM64)
+    return "arm64";
+#elif defined(HOST_ARCH_IA32)
+    return "ia32";
+#elif defined(HOST_ARCH_MIPS)
+    return "mips";
+#elif defined(HOST_ARCH_X64)
+    return "x64";
+#else
+#error Architecture detection failed.
+#endif
+  }
+
+  static const char* LibraryPrefix();
+
   // Returns a string representing the operating system's shared library
   // extension (e.g. 'so', 'dll', ...). The returned string should not be
   // deallocated by the caller.
   static const char* LibraryExtension();
 
   // Extracts the local hostname.
   static bool LocalHostname(char* buffer, intptr_t buffer_length);
 
   // Extracts the environment variables for the current process.  The array of
   // strings is Dart_ScopeAllocated. The number of elements in the array is
@@ skipping 41 matching lines @@
   static char** argv_;  // VM flags are argv_[1 ... script_index_ - 1]
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Platform);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_PLATFORM_H_