Revert "Turn off extern templates for most uses."
Turning off explicit template instantiation leads to a pretty
significant build time and code size cost. We're better off dealing
with ABI incompatibility issues that come up in a less heavy handed
way.
This reverts commit r189610.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@215740 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index ce235af..c9718cf 100644
--- a/include/__config
+++ b/include/__config
@@ -608,7 +608,7 @@
#endif
#ifndef _LIBCPP_EXTERN_TEMPLATE
-#define _LIBCPP_EXTERN_TEMPLATE(...)
+#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
#endif
#ifndef _LIBCPP_EXTERN_TEMPLATE2