Allow compiling non-32bit under feature flag (#184)

Co-authored-by: ZeWaka <[email protected]>

.github/workflows/rust.yml

@@ -14,13 +14,13 @@ jobs:
 
       - uses: dtolnay/rust-toolchain@nightly
         with:
-          targets: i686-pc-windows-msvc # Used for clippy, since it doesn't need to build the entire std
-          components: rustfmt, clippy, rust-src
+          targets: x86_64-pc-windows-msvc
+          components: clippy, rustfmt, rust-src
 
       - uses: Swatinem/rust-cache@v2
 
       - name: Clippy (all features)
-        run: cargo clippy --target i686-pc-windows-msvc --features all --locked -- -D warnings
+        run: cargo clippy -Z build-std --target i686-win7-windows-msvc --features all --locked -- -D warnings
 
       - name: Rustfmt
         run: cargo fmt -- --check
@@ -40,7 +40,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       BYOND_MAJOR: 515
-      BYOND_MINOR: 1636
+      BYOND_MINOR: 1642
       PKG_CONFIG_ALLOW_CROSS: 1
 
     steps:
@@ -52,7 +52,7 @@ jobs:
           sudo apt-get install libgcc-s1:i386 g++-multilib zlib1g-dev:i386
           ./scripts/install_byond.sh
 
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@nightly
         with:
           targets: i686-unknown-linux-gnu
 

Cargo.toml

@@ -168,6 +168,7 @@ rustls_tls = ["mysql/default-rustls"]
 
 # internal feature-like things
 jobs = ["flume"]
+allow_non_32bit = []
 
 [dev-dependencies]
 regex = "1"

src/lib.rs

@@ -55,5 +55,7 @@ pub mod url;
 #[cfg(feature = "worleynoise")]
 pub mod worleynoise;
 
-#[cfg(not(target_pointer_width = "32"))]
-compile_error!("rust-g must be compiled for a 32-bit target");
+#[cfg(all(not(target_pointer_width = "32"), not(feature = "allow_non_32bit")))]
+compile_error!(
+    "Compiling for non-32bit is not allowed without enabling the `allow_non_32bit` feature."
+);