Do not use common INFINITY name as it might be overriden by some other includ...

src/platform.h

 // Copyright 2006-2008 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 26 matching lines @@
 // the platform dependent classes could have been implemented using abstract
 // superclasses with virtual methods and having specializations for each
 // platform. This design was rejected because it was more complicated and
 // slower. It would require factory methods for selecting the right
 // implementation and the overhead of virtual methods for performance
 // sensitive like mutex locking/unlocking.
 
 #ifndef V8_PLATFORM_H_
 #define V8_PLATFORM_H_
 
+#define V8_INFINITY INFINITY
+
 // Windows specific stuff.
 #ifdef WIN32
 
 // Microsoft Visual C++ specific stuff.
 #ifdef _MSC_VER
 
 enum {
   FP_NAN,
   FP_INFINITE,
   FP_ZERO,
   FP_SUBNORMAL,
   FP_NORMAL
 };
 
-#define INFINITY HUGE_VAL
+#undef V8_INFINITY
+#define V8_INFINITY HUGE_VAL
 
 namespace v8 {
 namespace internal {
 int isfinite(double x);
 } }
 int isnan(double x);
 int isinf(double x);
 int isless(double x, double y);
 int isgreater(double x, double y);
 int fpclassify(double x);
@@ skipping 21 matching lines @@
 #define __GNUC_VERSION__ (__GNUC__ * 10000 + __GNUC_MINOR__ * 100)
 
 // Unfortunately, the INFINITY macro cannot be used with the '-pedantic'
 // warning flag and certain versions of GCC due to a bug:
 // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11931
 // For now, we use the more involved template-based version from <limits>, but
 // only when compiling with GCC versions affected by the bug (2.96.x - 4.0.x)
 // __GNUC_PREREQ is not defined in GCC for Mac OS X, so we define our own macro
 #if __GNUC_VERSION__ >= 29600 && __GNUC_VERSION__ < 40100
 #include <limits>
-#undef INFINITY
-#define INFINITY std::numeric_limits<double>::infinity()
+#undef V8_INFINITY
+#define V8_INFINITY std::numeric_limits<double>::infinity()
 #endif
 
 #endif  // __GNUC__
 
 namespace v8 {
 namespace internal {
 
 class Semaphore;
 
 double ceiling(double x);
@@ skipping 418 matching lines @@
   bool active_;
   PlatformData* data_;  // Platform specific data.
   DISALLOW_IMPLICIT_CONSTRUCTORS(Sampler);
 };
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_H_