Auto merge of #37313 - raphlinus:fuchsia, r=alexcrichton

Add Fuchsia support

Adds support for the x86_64-unknown-fuchsia target, which covers the
Fuchsia operating system.

6 files changed, 31 insertions, 6 deletions

diff --git a/src/libstd/sys/unix/args.rs b/src/libstd/sys/unix/args.rs
index c64db333e51..c04fd863674 100644
--- a/src/libstd/sys/unix/args.rs
+++ b/src/libstd/sys/unix/args.rs
@@ -58,7 +58,8 @@ impl DoubleEndedIterator for Args {
           target_os = "openbsd",
           target_os = "solaris",
           target_os = "emscripten",
-          target_os = "haiku"))]
+          target_os = "haiku",
+          target_os = "fuchsia"))]
 mod imp {
     use os::unix::prelude::*;
     use mem;
diff --git a/src/libstd/sys/unix/env.rs b/src/libstd/sys/unix/env.rs
index 66ff2fec832..eff3a8c2a34 100644
--- a/src/libstd/sys/unix/env.rs
+++ b/src/libstd/sys/unix/env.rs
@@ -171,3 +171,14 @@ pub mod os {
     pub const EXE_SUFFIX: &'static str = ".js";
     pub const EXE_EXTENSION: &'static str = "js";
 }
+
+#[cfg(target_os = "fuchsia")]
+pub mod os {
+    pub const FAMILY: &'static str = "unix";
+    pub const OS: &'static str = "fuchsia";
+    pub const DLL_PREFIX: &'static str = "lib";
+    pub const DLL_SUFFIX: &'static str = ".so";
+    pub const DLL_EXTENSION: &'static str = "so";
+    pub const EXE_SUFFIX: &'static str = "";
+    pub const EXE_EXTENSION: &'static str = "";
+}
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index b77008676b1..0b43fd2ac8c 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -312,7 +312,8 @@ impl DirEntry {
               target_os = "emscripten",
               target_os = "android",
               target_os = "solaris",
-              target_os = "haiku"))]
+              target_os = "haiku",
+              target_os = "fuchsia"))]
     pub fn ino(&self) -> u64 {
         self.entry.d_ino as u64
     }
@@ -342,7 +343,8 @@ impl DirEntry {
     #[cfg(any(target_os = "android",
               target_os = "linux",
               target_os = "emscripten",
-              target_os = "haiku"))]
+              target_os = "haiku",
+              target_os = "fuchsia"))]
     fn name_bytes(&self) -> &[u8] {
         unsafe {
             CStr::from_ptr(self.entry.d_name.as_ptr()).to_bytes()
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index 501329772ce..66bc9d4a491 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -26,6 +26,7 @@ use libc;
 #[cfg(target_os = "openbsd")]   pub use os::openbsd as platform;
 #[cfg(target_os = "solaris")]   pub use os::solaris as platform;
 #[cfg(target_os = "emscripten")] pub use os::emscripten as platform;
+#[cfg(target_os = "fuchsia")]   pub use os::fuchsia as platform;
 
 #[macro_use]
 pub mod weak;
@@ -88,11 +89,11 @@ pub fn init() {
         }
     }
 
-    #[cfg(not(any(target_os = "nacl", target_os = "emscripten")))]
+    #[cfg(not(any(target_os = "nacl", target_os = "emscripten", target_os="fuchsia")))]
     unsafe fn reset_sigpipe() {
         assert!(signal(libc::SIGPIPE, libc::SIG_IGN) != !0);
     }
-    #[cfg(any(target_os = "nacl", target_os = "emscripten"))]
+    #[cfg(any(target_os = "nacl", target_os = "emscripten", target_os="fuchsia"))]
     unsafe fn reset_sigpipe() {}
 }
 
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index 91f6ba80f83..e591f25cac1 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -38,7 +38,7 @@ static ENV_LOCK: Mutex = Mutex::new();
 
 extern {
     #[cfg(not(target_os = "dragonfly"))]
-    #[cfg_attr(any(target_os = "linux", target_os = "emscripten"),
+    #[cfg_attr(any(target_os = "linux", target_os = "emscripten", target_os = "fuchsia"),
                link_name = "__errno_location")]
     #[cfg_attr(any(target_os = "bitrig",
                    target_os = "netbsd",
@@ -346,6 +346,12 @@ pub fn current_exe() -> io::Result<PathBuf> {
     }
 }
 
+#[cfg(target_os = "fuchsia")]
+pub fn current_exe() -> io::Result<PathBuf> {
+    use io::ErrorKind;
+    Err(io::Error::new(ErrorKind::Other, "Not yet implemented on fuchsia"))
+}
+
 pub struct Env {
     iter: vec::IntoIter<(OsString, OsString)>,
     _dont_send_or_sync_me: PhantomData<*mut ()>,
diff --git a/src/libstd/sys/unix/thread.rs b/src/libstd/sys/unix/thread.rs
index 87d82cdab97..1642baa34d6 100644
--- a/src/libstd/sys/unix/thread.rs
+++ b/src/libstd/sys/unix/thread.rs
@@ -135,6 +135,10 @@ impl Thread {
     pub fn set_name(_name: &CStr) {
         // Newlib, Illumos, Haiku, and Emscripten have no way to set a thread name.
     }
+    #[cfg(target_os = "fuchsia")]
+    pub fn set_name(_name: &CStr) {
+        // FIXME: determine whether Fuchsia has a way to set a thread name.
+    }
 
     pub fn sleep(dur: Duration) {
         let mut secs = dur.as_secs();