Add support for GNU/Hurd

src/build.rs

@@ -1387,11 +1387,13 @@ mod tests {
     pub fn test_lib_listing() {
         let libs_osx = "-lSystem -lc -lm";
         let libs_linux = "-lgcc_s -lutil -lrt -lpthread -lm -ldl -lc";
+        let libs_hurd = "-lgcc_s -lutil -lrt -lpthread -lm -ldl -lc";
         let libs_msvc = "kernel32.lib advapi32.lib kernel32.lib ntdll.lib userenv.lib ws2_32.lib kernel32.lib ws2_32.lib kernel32.lib msvcrt.lib /defaultlib:msvcrt";
         let libs_mingw = "-lkernel32 -ladvapi32 -lkernel32 -lntdll -luserenv -lws2_32 -lkernel32 -lws2_32 -lkernel32";
 
         let target_osx = target::Target::new(Some("x86_64-apple-darwin"), false).unwrap();
         let target_linux = target::Target::new(Some("x86_64-unknown-linux-gnu"), false).unwrap();
+        let target_hurd = target::Target::new(Some("x86_64-unknown-hurd-gnu"), false).unwrap();
         let target_msvc = target::Target::new(Some("x86_64-pc-windows-msvc"), false).unwrap();
         let target_mingw = target::Target::new(Some("x86_64-pc-windows-gnu"), false).unwrap();
 
@@ -1400,6 +1402,10 @@ mod tests {
             static_libraries(libs_linux, &target_linux),
             "-lgcc_s -lutil -lrt -lpthread -lm -ldl -lc"
         );
+        assert_eq!(
+            static_libraries(libs_hurd, &target_hurd),
+            "-lgcc_s -lutil -lrt -lpthread -lm -ldl -lc"
+        );
         assert_eq!(
             static_libraries(libs_msvc, &target_msvc),
             "-lkernel32 -ladvapi32 -lntdll -luserenv -lws2_32 -lmsvcrt"

src/build_targets.rs

@@ -148,7 +148,7 @@ impl FileNames {
     fn from_target(target: &Target, lib_name: &str, targetdir: &Path) -> Option<Self> {
         let (shared_lib, static_lib, impl_lib, debug_info, def) = match target.os.as_str() {
             "none" | "linux" | "freebsd" | "dragonfly" | "netbsd" | "android" | "haiku"
-            | "illumos" | "openbsd" | "emscripten" => {
+            | "illumos" | "openbsd" | "emscripten" | "hurd" => {
                 let static_lib = targetdir.join(format!("lib{lib_name}.a"));
                 let shared_lib = targetdir.join(format!("lib{lib_name}.so"));
                 (shared_lib, static_lib, None, None, None)
@@ -207,6 +207,7 @@ mod test {
             "haiku",
             "illumos",
             "emscripten",
+            "hurd",
         ] {
             let target = Target {
                 is_target_overridden: false,

src/install.rs

@@ -103,7 +103,8 @@ impl LibType {
             | ("haiku", _)
             | ("illumos", _)
             | ("openbsd", _)
-            | ("emscripten", _) => LibType::So,
+            | ("emscripten", _)
+            | ("hurd", _) => LibType::So,
             ("macos", _) | ("ios", _) | ("tvos", _) | ("visionos", _) => LibType::Dylib,
             ("windows", _) => LibType::Windows,
             _ => unimplemented!("The target {}-{} is not supported yet", os, env),

src/target.rs

@@ -88,6 +88,7 @@ impl Target {
             || os == "haiku"
             || os == "illumos"
             || os == "openbsd"
+            || os == "hurd"
         {
             lines.push(if capi_config.library.versioning {
                 format!("-Wl,-soname,lib{lib_name}.so.{sover}")