I don't see this in a quick scan through
CMAKE_DIR/share/cmake-3.5/Help/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.rst. This
would be the C++11 addition under
http://en.cppreference.com/w/cpp/language/storage_duration#Static_local_variables
- or, the feature matrix at
https://msdn.microsoft.com/en-us/library/hh567368.aspx refers to this as "Magic
statics" and refers to
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2660.htm .
Before I file a bug requesting an addition for this, I thought I'd check to see
if there's something relevant in the C++ feature list that I missed in my quick
scan.
For now, I'm using a custom definition of
#define CXX_STATIC_LOCAL_VAR_THREAD_SAFE_INIT \
(defined(__GNUC__) || defined(__clang__) || \
(defined(_MSC_VER) && _MSC_VER >= 1900)) // VS 2015 / vc14
(given that the rest of our program has a strong requirement on other C++11
features anyway).
--
Daniel
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