diff -Naur oiio-Release-1.5.11.orig/src/ptex.imageio/ptex/PtexHalf.cpp oiio-Release-1.5.11/src/ptex.imageio/ptex/PtexHalf.cpp
--- oiio-Release-1.5.11.orig/src/ptex.imageio/ptex/PtexHalf.cpp	2015-01-28 11:57:02.000000000 -0600
+++ oiio-Release-1.5.11/src/ptex.imageio/ptex/PtexHalf.cpp	2015-02-11 21:09:16.670289293 -0600
@@ -80,7 +80,7 @@
     return 1;
 }
 
-static bool PtexHalfInitialized = PtexHalfInit();
+bool PtexHalfInitialized = PtexHalfInit();
 
 
 /** Handle exceptional cases for half-to-float conversion */