Cygwin build fixes.

src/osgPlugins/dx/DXWriter.cpp

@@ -142,8 +142,10 @@
 
 #if defined(WIN32) && !defined(__CYGWIN__)
 #define vsnprintf _vsnprintf
+#define snprintf _snprintf
 #endif
 
+
 namespace dx {
 
 //----------------------------------------------------------------------------
@@ -525,7 +527,7 @@ inline int WARNING( char fmt[], ... )
 //----------------------------------------------------------------------------
 
 void GetParms( int argc, char *argv[], 
-               char infile [ PATH_MAX ], WriterParms &parms )
+               char infile [ DX_PATH_MAX ], WriterParms &parms )
 {
   WriterParms defaults;
 
@@ -581,7 +583,7 @@ void GetParms( int argc, char *argv[],
   }
 
   infile[0] = parms.outfile[0] = '\0';
-  strncat( infile       , argv[ i ], PATH_MAX-1              );
+  strncat( infile       , argv[ i ], DX_PATH_MAX-1              );
   strncat( parms.outfile, argv[i+1], sizeof(parms.outfile)-1 );
 }
 
@@ -2279,10 +2281,6 @@ void DXWriter::CollectUnhandledModesAndAttrs( osg::StateSet *sset )
 
 //----------------------------------------------------------------------------
 
-#ifdef WIN32
-#define snprintf _snprintf
-#endif
-
 void DXWriter::ReportUnhandledModesAndAttrs()
 {
   char msg[1024];

src/osgPlugins/dx/DXWriter.h

@@ -21,11 +21,7 @@
 #include <osg/Vec4>
 #include <osg/Node>
 
-#ifdef WIN32
-// windows only defines PATH_MAX on _POSIX_
-#define PATH_MAX 512
-#endif
-
+const int DX_PATH_MAX = 512;
 
 namespace dx {