Introduced a OSG_PLUGIN_PREFIX variable into CMake build system with it set to

"" for all platforms except Cygwin where its set to "cygwin_" and Mingw where
it is set to "mingw_".  Updated osgDB::Registry to look for these for the plugins.
Updated the osgintrospection example to search for these names as well.

CMakeLists.txt

@@ -23,6 +23,17 @@ SET(OPENSCENEGRAPH_VERSION ${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINO
 
 SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})
 
+SET(OSG_PLUGIN_PREFIX "")
+
+IF (CYGWIN)
+    SET(OSG_PLUGIN_PREFIX "cygwin_")
+ENDIF(CYGWIN)
+
+IF(MINGW)
+    SET(OSG_PLUGIN_PREFIX "mingw_")
+ENDIF(MINGW)
+
+
 # We want to build SONAMES shared librariess
 SET(OPENSCENEGRAPH_SONAMES TRUE)
 SET(OPENTHREADS_SONAMES TRUE)
@@ -87,6 +98,9 @@ INCLUDE_DIRECTORIES(
 #ADD_DEFINITIONS(-D)
 # Platform specific definitions
 
+
+
+
 IF(WIN32)
     ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
     ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)

examples/osgintrospection/osgintrospection.cpp

@@ -38,9 +38,9 @@ std::string createLibraryNameForWrapper(const std::string& ext)
 #if defined(WIN32)
     // !! recheck evolving Cygwin DLL extension naming protocols !! NHV
     #ifdef __CYGWIN__
-        return "cygosgwrapper_"+ext+".dll";
+        return "cygwin_osgwrapper_"+ext+".dll";
     #elif defined(__MINGW32__)
-        return "libosgwrapper_"+ext+".dll";
+        return "mingw_osgwrapper_"+ext+".dll";
     #else
         #ifdef _DEBUG
             return "osgwrapper_"+ext+"d.dll";

src/osgDB/Registry.cpp

@@ -585,9 +585,9 @@ std::string Registry::createLibraryNameForExtension(const std::string& ext)
 #if defined(WIN32)
     // !! recheck evolving Cygwin DLL extension naming protocols !! NHV
     #ifdef __CYGWIN__
-        return prepend+"cyg"+"osgdb_"+lowercase_ext+".dll";
+        return prepend+"cygwin_"+"osgdb_"+lowercase_ext+".dll";
     #elif defined(__MINGW32__)
-        return prepend+"lib"+"osgdb_"+lowercase_ext+".dll";
+        return prepend+"mingw_"+"osgdb_"+lowercase_ext+".dll";
     #else
         #ifdef _DEBUG
             return prepend+"osgdb_"+lowercase_ext+"d.dll";

src/osgPlugins/CMakeLists.txt

@@ -11,9 +11,7 @@ IF(NOT MSVC)
     SET(LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH}/${OSG_PLUGINS}")
 ENDIF(NOT MSVC)
 
-IF(NOT MINGW)
-    SET(CMAKE_SHARED_MODULE_PREFIX "")
-ENDIF(NOT MINGW)
+SET(CMAKE_SHARED_MODULE_PREFIX ${OSG_PLUGIN_PREFIX})
 
 
 SET(TARGET_DEFAULT_PREFIX "osgdb_")

src/osgWrappers/CMakeLists.txt

@@ -2,9 +2,7 @@ PROJECT(OSG_WRAPPERS)
 
 SET(LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH}/${OSG_PLUGINS}")
 
-IF(NOT MINGW)
-    SET(CMAKE_SHARED_MODULE_PREFIX "")
-ENDIF(NOT MINGW)
+SET(CMAKE_SHARED_MODULE_PREFIX ${OSG_PLUGIN_PREFIX})
 
 
 MACRO(ADD_WRAPPER_LIB SUBDIR EXPORTDEF)