Support cloudfire optimized version of zlib as a backend

rust-lang · Feb 8, 2020 · ea91453 · ea91453
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diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
@@ -40,6 +40,7 @@ jobs:
     - run: cargo test --features miniz-sys
     - run: cargo test --features zlib --no-default-features
     - run: cargo test --features cloudflare_zlib --no-default-features
+      if: matrix.build != 'mingw'
     - run: cargo test --features miniz-sys --no-default-features
     - run: cargo test --features tokio
 

diff --git a/README.md b/README.md
@@ -61,7 +61,8 @@ flate2 = { version = "1.0", features = ["zlib"], default-features = false }
 
 The cloudflare optimized version of zlib is also available.
 While it's significantly faster it requires a x86-64 CPU with SSE 4.2 or ARM64 with NEON & CRC.
-It does not support 32-bit CPUs at all. For more information check the [crate documentation](https://crates.io/crates/cloudflare-zlib-sys).
+It does not support 32-bit CPUs at all and is incompatible with mingw.
+For more information check the [crate documentation](https://crates.io/crates/cloudflare-zlib-sys).
 
 ```toml
 [dependencies]