From e37468b630af868e56f473b540cb1d377e24a74b Mon Sep 17 00:00:00 2001
From: Lei Zhang <antiagainst@google.com>
Date: Thu, 24 Nov 2016 17:15:43 -0500
Subject: [PATCH 1/3] Turn off utmpx and signals for Fuchsia.

Fuchsia uses musl as its libc; musl only has stub implementation
for utmpx. From their wiki, that is deliberately chosen.

Fuchsia doesn't have signals mechanism.
---
 src/uucore/lib.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/uucore/lib.rs b/src/uucore/lib.rs
index 5f19aa718..9b1a5e763 100644
--- a/src/uucore/lib.rs
+++ b/src/uucore/lib.rs
@@ -16,7 +16,7 @@ pub mod encoding;
 #[cfg(feature = "parse_time")]
 pub mod parse_time;
 
-#[cfg(all(unix, feature = "utmpx"))]
+#[cfg(all(unix, not(target_os = "fuchsia"), feature = "utmpx"))]
 pub mod utmpx;
 #[cfg(all(unix, feature = "utsname"))]
 pub mod utsname;
@@ -24,7 +24,7 @@ pub mod utsname;
 pub mod entries;
 #[cfg(all(unix, feature = "process"))]
 pub mod process;
-#[cfg(all(unix, feature = "signals"))]
+#[cfg(all(unix, not(target_os = "fuchsia"), feature = "signals"))]
 pub mod signals;
 
 #[cfg(all(windows, feature = "wide"))]

From 59c12433e0605b9960facd208f66249f232feddd Mon Sep 17 00:00:00 2001
From: Lei Zhang <antiagainst@google.com>
Date: Thu, 24 Nov 2016 17:30:03 -0500
Subject: [PATCH 2/3] Add Fuchsia as recognized host OS in uname.

---
 src/uname/uname.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/uname/uname.rs b/src/uname/uname.rs
index 9fae33259..db5723d8c 100644
--- a/src/uname/uname.rs
+++ b/src/uname/uname.rs
@@ -28,6 +28,8 @@ static HOST_OS: &'static str = "FreeBSD";
 static HOST_OS: &'static str = "OpenBSD";
 #[cfg(target_os = "macos")]
 static HOST_OS: &'static str = "Darwin";
+#[cfg(target_os = "fuchsia")]
+static HOST_OS: &'static str = "Fuchsia";
 
 pub fn uumain(args: Vec<String>) -> i32 {
     let mut opts = new_coreopts!(SYNTAX, SUMMARY, "");

From 546f2855d5fa31abcc4f91524b1aca87a12d9ab6 Mon Sep 17 00:00:00 2001
From: Lei Zhang <antiagainst@google.com>
Date: Thu, 24 Nov 2016 17:54:47 -0500
Subject: [PATCH 3/3] Create a new feature for Fuchsia-enabled utilities.

---
 Cargo.toml | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 build.rs   |  2 +-
 2 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 6e5ee3705..752439f51 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,6 +36,89 @@ unix = [
   "users",
   "who",
 ]
+# Feature "fuchsia" contains the exclusive list of utilities
+# that can be compiled and run on Fuchsia. Should be built
+# with --no-default-features when selecting this feature.
+# TODO: merge with "generic"/"unix" to avoid duplication
+# once we support all utilities in that feature.
+fuchsia = [
+  # From unix
+  "arch",
+  "chgrp",
+  "chmod",
+  "chown",
+  "du",
+  "groups",
+  "hostid",
+  "install",
+  "logname",
+  "mkfifo",
+  "mknod",
+  "nice",
+  "pathchk",
+  "stdbuf",
+  "touch",
+  "tty",
+  "uname",
+  "unlink",
+
+  # From generic
+  "base32",
+  "base64",
+  "basename",
+  "cat",
+  "cksum",
+  "comm",
+  "cp",
+  "cut",
+  "dircolors",
+  "dirname",
+  "echo",
+  "env",
+  "expand",
+  "expr",
+  "factor",
+  "false",
+  "fmt",
+  "fold",
+  "hashsum",
+  "head",
+  "link",
+  "ln",
+  "mkdir",
+  "mv",
+  "nl",
+  "od",
+  "paste",
+  "printenv",
+  "printf",
+  "pwd",
+  "readlink",
+  "realpath",
+  "relpath",
+  "rm",
+  "rmdir",
+  "seq",
+  "shred",
+  "shuf",
+  "sleep",
+  "sort",
+  "split",
+  "sum",
+  "sync",
+  "tac",
+  "tail",
+  "tee",
+  "test",
+  "tr",
+  "true",
+  "truncate",
+  "tsort",
+  "unexpand",
+  "wc",
+  "whoami",
+  "yes",
+]
 generic = [
   "base32",
   "base64",
diff --git a/build.rs b/build.rs
index f06e751bf..1548858b4 100644
--- a/build.rs
+++ b/build.rs
@@ -12,7 +12,7 @@ pub fn main() {
         if val == "1" && key.starts_with(feature_prefix) {
             let krate = key[feature_prefix.len()..].to_lowercase();
             match krate.as_ref() {
-                "default" | "unix" | "generic" | "nightly" | "test_unimplemented" => continue,
+                "default" | "unix" | "fuchsia" | "generic" | "nightly" | "test_unimplemented" => continue,
                 _ => {},
             }
             crates.push(krate.to_string());