COMP: allow importing ossimPluginProjectionFactory and ossimOgcWktTranslator from the outside

Utilities/otbossimplugins/gdal/ossimOgcWktTranslator.h

@@ -19,13 +19,14 @@
 
 #include <ossim/base/ossimCommon.h>
 #include <ossim/base/ossimString.h>
+#include <ossimPluginConstants.h>
 
 #include <map>
 #include <string>
 
 class ossimKeywordlist;
 
-class ossimOgcWktTranslator
+class OSSIM_PLUGINS_DLL ossimOgcWktTranslator
 {
 public:
    ossimOgcWktTranslator();

Utilities/otbossimplugins/ossim/ossimPluginProjectionFactory.h

@@ -9,13 +9,14 @@
 
 #ifndef ossimPluginProjectionFactory_HEADER
 #define ossimPluginProjectionFactory_HEADER
+#include <ossimPluginConstants.h>
 #include <ossim/projection/ossimProjectionFactoryBase.h>
 
 namespace ossimplugins
 {
 
 
-class ossimPluginProjectionFactory : public ossimProjectionFactoryBase
+class OSSIM_PLUGINS_DLL ossimPluginProjectionFactory : public ossimProjectionFactoryBase
 {
 public: