Work around apparent OSG 3.2.0 normal binding bug.

[simgear.git] / simgear / scene / material / EffectBuilder.cxx

diff --git a/simgear/scene/material/EffectBuilder.cxx b/simgear/scene/material/EffectBuilder.cxx
index 7eb5580ff43fd98d3c45057b66f535f853759b18..446659426523bc0c08b9deaebcfdca047c2b7e06 100644 (file)
--- a/simgear/scene/material/EffectBuilder.cxx
+++ b/simgear/scene/material/EffectBuilder.cxx
@@ -8,6 +8,8 @@
 #include "EffectBuilder.hxx"
 #include "Effect.hxx"
 
+using std::string;
+
 namespace simgear
 {