feat: show clear compiler error when no backend is chosen. (rust-lang…

…#359)
Byron · Jul 5, 2023 · fbf727d · fbf727d
1 parent 2684a56
commit fbf727d
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/src/ffi/mod.rs b/src/ffi/mod.rs
@@ -40,9 +40,9 @@ mod c;
 #[cfg(feature = "any_zlib")]
 pub use self::c::*;
 
-#[cfg(not(feature = "any_zlib"))]
+#[cfg(all(not(feature = "any_zlib"), feature = "miniz_oxide"))]
 mod rust;
-#[cfg(not(feature = "any_zlib"))]
+#[cfg(all(not(feature = "any_zlib"), feature = "miniz_oxide"))]
 pub use self::rust::*;
 
 impl std::fmt::Debug for ErrorMessage {

diff --git a/src/lib.rs b/src/lib.rs
@@ -78,6 +78,18 @@
 #![cfg_attr(test, deny(warnings))]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
+#[cfg(not(any(
+ feature = "rust_backend",
+ feature = "zlib",
+ feature = "zlib-default",
+ feature = "zlib-ng",
+ feature = "zlib-ng-compat",
+ feature = "cloudflare_zlib"
+)))]
+compile_error!(
+ "You need to choose a zlib backend"
+);
+
 pub use crate::crc::{Crc, CrcReader, CrcWriter};
 pub use crate::gz::GzBuilder;
 pub use crate::gz::GzHeader;