Obtained from:	https://github.com/eclipse-sumo/sumo/commit/8a52e99ba9170b65e7c661e001d5028e4bba5241
		https://github.com/eclipse-sumo/sumo/commit/bb818b0822ea730e932769d9eba4cfdb3966095c

--- src/netbuild/NBHeightMapper.cpp.orig	2019-04-15 14:11:30 UTC
+++ src/netbuild/NBHeightMapper.cpp
@@ -192,7 +192,11 @@ NBHeightMapper::loadShapeFile(const std::string& file)
 
     // triangle coordinates are stored in WGS84 and later matched with network coordinates in WGS84
     // build coordinate transformation
+#if GDAL_VERSION_MAJOR < 3
     OGRSpatialReference* sr_src = layer->GetSpatialRef();
+#else
+    const OGRSpatialReference* sr_src = layer->GetSpatialRef();
+#endif
     OGRSpatialReference sr_dest;
     sr_dest.SetWellKnownGeogCS("WGS84");
     OGRCoordinateTransformation* toWGS84 = OGRCreateCoordinateTransformation(sr_src, &sr_dest);
--- src/netimport/NIImporter_ArcView.cpp.orig	2019-04-15 14:11:30 UTC
+++ src/netimport/NIImporter_ArcView.cpp
@@ -139,7 +139,11 @@ NIImporter_ArcView::load() {
     poLayer->ResetReading();
 
     // build coordinate transformation
+#if GDAL_VERSION_MAJOR < 3
     OGRSpatialReference* origTransf = poLayer->GetSpatialRef();
+#else
+    const OGRSpatialReference* origTransf = poLayer->GetSpatialRef();
+#endif
     OGRSpatialReference destTransf;
     // use wgs84 as destination
     destTransf.SetWellKnownGeogCS("WGS84");
--- src/polyconvert/PCLoaderArcView.cpp.orig	2019-04-15 14:11:30 UTC
+++ src/polyconvert/PCLoaderArcView.cpp
@@ -102,7 +102,11 @@ PCLoaderArcView::load(const std::string& file, Options
     poLayer->ResetReading();
 
     // build coordinate transformation
+#if GDAL_VERSION_MAJOR < 3
     OGRSpatialReference* origTransf = poLayer->GetSpatialRef();
+#else
+    const OGRSpatialReference* origTransf = poLayer->GetSpatialRef();
+#endif
     OGRSpatialReference destTransf;
     // use wgs84 as destination
     destTransf.SetWellKnownGeogCS("WGS84");