win: set CXX_LIBRARY_VERSION to 2011

util/stdlib/string_number_conversion.cc

Index: util/stdlib/string_number_conversion.cc
diff --git a/util/stdlib/string_number_conversion.cc b/util/stdlib/string_number_conversion.cc
index a7c7d519dedfb22bb9332af7685325919fdea42b..62b4d3fd2f4b406ffb11ea7ad5b83b0f858342d3 100644
--- a/util/stdlib/string_number_conversion.cc
+++ b/util/stdlib/string_number_conversion.cc
@@ -29,7 +29,7 @@
 // the std::numeric_limits<>::min() and max() functions will not be marked as
 // constexpr, and thus won’t be usable with C++11’s static_assert(). In that
 // case, a run-time CHECK() will have to do.
-#if CXX_LIBRARY_VERSION >= 2011
+#if CXX_LIBRARY_VERSION >= 2011 && CXX_HAS_CONSTEXPR

[Mark Mentovai, 2014/12/15 23:51:56]

The way that we’re using this here, it should actually be called
CXX_LIBRARY_HAS_CONSTEXPR. We’re not testing whether the language has constexpr
support, we’re testing whether things in the library are declared constexpr
instead of const.

[scottmg, 2014/12/15 23:54:48]

Done.

 #define CONSTEXPR_STATIC_ASSERT(condition, message) \
   static_assert(condition, message)
 #else