--- setup.py.orig	2019-09-26 13:19:23.000000000 +0300
+++ setup.py	2019-09-26 13:21:30.000000000 +0300
@@ -223,6 +223,13 @@
             log.info("Building Fiona for gdal 2.0.x-2.1.x: {0}".format(gdalversion))
             shutil.copy('fiona/_shim2.pyx', 'fiona/_shim.pyx')
             shutil.copy('fiona/_shim2.pxd', 'fiona/_shim.pxd')
+    elif gdal_major_version == 3:
+        log.info("Building Fiona for gdal 3++: {0}".format(gdalversion))
+        shutil.copy('fiona/_shim22.pyx', 'fiona/_shim.pyx')
+        shutil.copy('fiona/_shim22.pxd', 'fiona/_shim.pxd')
+    else:
+        log.fatal("Unsupported gdal version: {0}".format(gdalversion))
+        sys.exit(1)
 
     ext_modules = cythonize([
         Extension('fiona._geometry', ['fiona/_geometry.pyx'], **ext_options),