prebuild 3.1 bindings

Built on the gdal 3.1.0 ubuntu-full docker container:
https://hub.docker.com/layers/osgeo/gdal/ubuntu-full-3.1.0/images/sha256-6c6bf79e32b6f33d1d2b29761f78e05557b0f2a491fe799ae1e56aad3c5c868d

.dockerignore

@@ -0,0 +1 @@
+target

Cargo.toml

@@ -16,9 +16,7 @@ bindgen = ["gdal-sys/bindgen"]
 gdal_2_2 = ["gdal-sys/min_gdal_version_2_2"]
 gdal_2_4 = ["gdal-sys/min_gdal_version_2_4"]
 gdal_3_0 = ["gdal_3", "gdal-sys/min_gdal_version_3_0"]
-# Note, that currently 3.1 uses the same bindings as 3_0, but the separate
-# feature is used in tests
-gdal_3_1 = ["gdal_3", "gdal-sys/min_gdal_version_3_0"]
+gdal_3_1 = ["gdal_3", "gdal-sys/min_gdal_version_3_1"]
 gdal_3 = []
 array = ["ndarray"]
 datetime = ["chrono"]

gdal-sys/build.rs

@@ -188,6 +188,8 @@ fn main() {
             "prebuilt-bindings/gdal_2.4.rs",
             #[cfg(feature = "min_gdal_version_3_0")]
             "prebuilt-bindings/gdal_3.0.rs",
+            #[cfg(feature = "min_gdal_version_3_1")]
+            "prebuilt-bindings/gdal_3.1.rs",
         ];
         std::fs::copy(&prebuilt_paths[prebuilt_paths.len() - 1], &out_path)
             .expect("Can't copy bindings to output directory");