MacOS portability tweaks from Darrell Walisser.

[simgear.git] / simgear / sky / sphere.cxx

diff --git a/simgear/sky/sphere.cxx b/simgear/sky/sphere.cxx
index 21969e2ea3ceed4d0da89dda6c7ece9a24ae2989..b67f2cc6389e921db31fdce6950cfaff973569f8 100644 (file)
--- a/simgear/sky/sphere.cxx
+++ b/simgear/sky/sphere.cxx
@@ -34,6 +34,7 @@
 #include <plib/sg.h>
 #include <plib/ssg.h>
 
+FG_USING_NAMESPACE(std);
 
 // return a sphere object as an ssgBranch
 ssgBranch *ssgMakeSphere( ssgSimpleState *state, ssgColourArray *cl,