Fix compile on Apple platforms

1 files changed, 1 insertions, 0 deletions

diff --git a/cpu.cpp b/cpu.cpp
index 1d0832b7..13302c76 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -238,6 +238,7 @@ void GetAppleMachineInfo(unsigned int& device, unsigned int& version, unsigned i
 #if CRYPTOPP_CXX11_DYNAMIC_INIT

 	static const AppleMachineInfo info;

 #else

+	using CryptoPP::Singleton;

 	const AppleMachineInfo& info = Singleton<AppleMachineInfo>().Ref();

 #endif