Possibility to set prefix path for mapserver by environment variable

git-svn-id: http://svn.osgeo.org/qgis/trunk@14303 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/mapserver/qgis_map_serv.cpp

@@ -125,8 +125,19 @@ int main( int argc, char * argv[] )
 
   QgsApplication qgsapp( argc, argv, false );
 
-  // init QGIS's paths - true means that all path will be inited from prefix
-  QgsApplication::setPrefixPath( CMAKE_INSTALL_PREFIX, TRUE );
+  //Default prefix path may be altered by environment variable
+  char* prefixPath = getenv( "QGIS_PREFIX_PATH" );
+  if ( prefixPath )
+  {
+    QgsApplication::setPrefixPath( prefixPath, TRUE );
+  }
+  else
+  {
+    // init QGIS's paths - true means that all path will be inited from prefix
+    QgsApplication::setPrefixPath( CMAKE_INSTALL_PREFIX, TRUE );
+  }
+
+
 
   // Instantiate the plugin directory so that providers are loaded
   QgsProviderRegistry::instance( QgsApplication::pluginPath() );