Add support for Haiku (#233)

Related: bytecodealliance/rustix#411

Co-authored-by: cos <cos>
Co-authored-by: Taiki Endo <[email protected]>

Author: rymdbar

.github/workflows/ci.yml

@@ -128,10 +128,9 @@ jobs:
     # - name: HermitOS
     #   if: startsWith(matrix.rust, 'nightly') && startsWith(matrix.os, 'ubuntu')
     #   run: cargo check -Z build-std --target x86_64-unknown-hermit
-    # TODO:
-    # - name: Check haiku
-    #   if: startsWith(matrix.rust, 'nightly') && startsWith(matrix.os, 'ubuntu')
-    #   run: cargo check -Z build-std --target x86_64-unknown-haiku
+    - name: Check haiku
+      if: startsWith(matrix.rust, 'nightly') && startsWith(matrix.os, 'ubuntu')
+      run: cargo check -Z build-std --target x86_64-unknown-haiku
     - name: Check vita
       if: startsWith(matrix.rust, 'nightly') && startsWith(matrix.os, 'ubuntu')
       run: cargo check -Z build-std --target armv7-sony-vita-newlibeabihf

src/lib.rs

@@ -2104,13 +2104,15 @@ fn connect(
             target_os = "aix",
             target_vendor = "apple",
             target_os = "espidf",
+            target_os = "haiku",
             windows,
         )))]
         let flags = rn::SocketFlags::CLOEXEC;
         #[cfg(any(
             target_os = "aix",
             target_vendor = "apple",
             target_os = "espidf",
+            target_os = "haiku",
             windows,
         ))]
         let flags = rn::SocketFlags::empty();