Work around docs.rs problem with cargo (ref #240)

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        features: ["", "--all-features"]
+        features: ["", "--features bindgen,array"]
 
     steps:
       - name: Checkout code
@@ -65,7 +65,7 @@ jobs:
 
     strategy:
       matrix:
-        features: ["", "--all-features"]
+        features: ["", "--features bindgen,array"]
 
     steps:
       - name: Checkout code
@@ -114,7 +114,7 @@ jobs:
 
     strategy:
       matrix:
-        features: ["", "--all-features"]
+        features: ["", "--features bindgen,array"]
 
     steps:
       - name: Checkout code
@@ -163,7 +163,7 @@ jobs:
 
     strategy:
       matrix:
-        features: ["", "--all-features"]
+        features: ["", "--features bindgen,array"]
 
     steps:
       - name: Checkout code
@@ -210,7 +210,7 @@ jobs:
 
     strategy:
       matrix:
-        features: ["", "--all-features"]
+        features: ["", "--features bindgen,array"]
 
     steps:
       - name: Checkout code

Cargo.toml

@@ -14,6 +14,7 @@ edition = "2021"
 default = []
 bindgen = ["gdal-sys/bindgen"]
 array = ["ndarray"]
+docsrs = []
 
 [dependencies]
 thiserror = "1.0"
@@ -38,3 +39,4 @@ members = ["gdal-sys"]
 
 [package.metadata.docs.rs]
 rustc-args = ["--cfg", "docsrs"]
+features = [ "docsrs" ]

build.rs

@@ -1,11 +1,18 @@
 use std::str::FromStr;
 
-#[cfg(docsrs)]
+#[cfg(feature = "docsrs")]
 pub fn gdal_version_info(_key: &str) -> String {
+    if std::env::var("DOCS_RS").is_err() {
+        panic!(
+            r#"The `docsrs` feature should not be enabled.
+  If you are using the `--all-features` flag, try replacing it with `--features bindgen,array`.
+  See https://github.com/georust/gdal/pull/241 for more details."#
+        );
+    };
     "3020000".to_string()
 }
 
-#[cfg(not(docsrs))]
+#[cfg(not(feature = "docsrs"))]
 pub fn gdal_version_info(key: &str) -> String {
     let c_key = std::ffi::CString::new(key.as_bytes()).unwrap();