Provide a way to disable use of extern templates in libc++. This is intended for the clients of libc++, not the libc++ build. The dylib should always contain the extern templates. To disable the client needs to put -D'_LIBCPP_EXTERN_TEMPLATE(...)=' on the command line.
llvm-svn: 167486
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: cd47cbc7a44604a65d3ef391822a32b79b2f61e4
diff --git a/include/string b/include/string
index 00016ee..5bf42f0 100644
--- a/include/string
+++ b/include/string
@@ -1031,7 +1031,7 @@
#pragma warning( push )
#pragma warning( disable: 4231 )
#endif // _MSC_VER
-extern template class __basic_string_common<true>;
+_LIBCPP_EXTERN_TEMPLATE(class __basic_string_common<true>)
#ifdef _MSC_VER
#pragma warning( pop )
#endif // _MSC_VER
@@ -3975,8 +3975,8 @@
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
-extern template class basic_string<char>;
-extern template class basic_string<wchar_t>;
+_LIBCPP_EXTERN_TEMPLATE(class basic_string<char>)
+_LIBCPP_EXTERN_TEMPLATE(class basic_string<wchar_t>)
extern template
string