diff --git a/README.md b/README.md
index 99db360b9..5c5d42d29 100644
--- a/README.md
+++ b/README.md
@@ -147,29 +147,106 @@ To contribute to coreutils, please see [CONTRIBUTING](CONTRIBUTING.md).
 To do
 -----
 
-- chcon
-- runcon
-- ~~md5sum~~, ~~sha1sum~~, ~~sha224sum~~, ~~sha256sum~~, ~~sha384sum~~, ~~sha512sum~~ (replaced by [hashsum](https://github.com/uutils/coreutils/blob/master/src/hashsum/hashsum.rs))
-- chgrp
-- cp (not much done)
-- csplit
-- date
-- dd
-- df
-- expr (almost done, no regular expressions)
-- join
-- ls
-- mv (almost done, one more option)
-- numfmt
-- od (in progress, needs lots of work)
-- pr
-- printf
-- sort (a couple of options implemented)
-- split (a couple of missing options)
-- stty
-- tail (not all features implemented)
-- test (not all features implemented)
-- uniq (a couple of missing options)
+* [x] arch
+* [x] base32
+* [x] base64
+* [x] basename
+* [x] cat
+* [ ] chcon
+* [ ] chgrp
+* [x] chmod
+* [x] chown
+* [x] chroot
+* [x] cksum
+* [x] comm
+* [ ] cp (not much done)
+* [ ] csplit
+* [x] cut
+* [ ] date
+* [ ] dd
+* [ ] df
+* [x] dircolors
+* [x] dirname
+* [x] du
+* [x] echo
+* [x] env
+* [x] expand
+* [ ] expr (almost done, no regular expressions)
+* [x] factor
+* [x] false
+* [x] fmt
+* [x] fold
+* [x] groups
+* [x] hashsum
+* [x] head
+* [x] hostid
+* [x] hostname
+* [x] id
+* [ ] install (a couple of missing options)
+* [ ] join
+* [x] kill
+* [x] link
+* [x] ln
+* [x] logname
+* [ ] ls
+* [x] ~~md5sum~~, ~~sha1sum~~, ~~sha224sum~~, ~~sha256sum~~, ~~sha384sum~~, ~~sha512sum~~ (replaced by [hashsum](https://github.com/uutils/coreutils/blob/master/src/hashsum/hashsum.rs))
+* [x] mkdir
+* [x] mkfifo
+* [x] mknod
+* [x] mktemp
+* [ ] mv (almost done, one more option)
+* [x] nice
+* [x] nl
+* [x] nohup
+* [x] nproc
+* [ ] numfmt
+* [ ] od (in progress, needs lots of work)
+* [x] paste
+* [x] pathchk
+* [x] pinky
+* [ ] pr
+* [x] printenv
+* [ ] printf
+* [x] ptx
+* [x] pwd
+* [x] readlink
+* [x] realpath
+* [x] relpath
+* [x] rm
+* [x] rmdir
+* [ ] runcon
+* [x] seq
+* [x] shred
+* [x] shuf
+* [x] sleep
+* [ ] sort (a couple of options implemented)
+* [ ] split (a couple of missing options)
+* [x] stat
+* [x] stdbuf
+* [ ] stty
+* [x] sum
+* [x] sync
+* [x] tac
+* [ ] tail (not all features implemented)
+* [x] tee
+* [ ] test (not all features implemented)
+* [x] timeout
+* [x] touch
+* [x] tr
+* [x] true
+* [x] truncate
+* [x] tsort
+* [x] tty
+* [x] uname
+* [x] unexpand
+* [x] uniq
+* [x] unlink
+* [x] uptime
+* [x] users
+* [x] wc
+* [x] who
+* [x] whoami
+* [x] yes
 
 License
 -------
diff --git a/src/uniq/Cargo.toml b/src/uniq/Cargo.toml
index bbab749c8..b3c415e54 100644
--- a/src/uniq/Cargo.toml
+++ b/src/uniq/Cargo.toml
@@ -9,8 +9,10 @@ path = "uniq.rs"
 
 [dependencies]
 getopts = "*"
-libc = "*"
-uucore = { path="../uucore" }
+
+[dependencies.uucore]
+path="../uucore"
+default-features = false
 
 [[bin]]
 name = "uniq"
diff --git a/src/uucore/Cargo.toml b/src/uucore/Cargo.toml
index a62afa620..7a53082a7 100644
--- a/src/uucore/Cargo.toml
+++ b/src/uucore/Cargo.toml
@@ -4,22 +4,25 @@ version = "0.0.1"
 authors = []
 
 [dependencies]
-libc = { git = "https://github.com/rust-lang/libc.git" }
 getopts = "*"
 time = { version = "*", optional = true }
 data-encoding = { version = "^1.1", optional = true }
 
+[dependencies.libc]
+git = "https://github.com/rust-lang/libc.git"
+optional = true
+
 [features]
-fs = []
+fs = ["libc"]
 utf8 = []
 encoding = ["data-encoding"]
 parse_time = []
-utmpx = ["time"]
-c_types = []
-process = []
+utmpx = ["time", "libc"]
+c_types = ["libc"]
+process = ["libc"]
 signals = []
 wide = []
-default = ["fs", "utf8", "encoding", "parse_time", "utmpx", "c_types", "process", "signals", "wide"]
+default = ["fs", "libc", "utf8", "encoding", "parse_time", "utmpx", "c_types", "process", "signals", "wide"]
 
 [lib]
 path = "lib.rs"
diff --git a/src/uucore/lib.rs b/src/uucore/lib.rs
index 994112b74..86e24a07a 100644
--- a/src/uucore/lib.rs
+++ b/src/uucore/lib.rs
@@ -1,3 +1,4 @@
+#[cfg(feature = "libc")]
 pub extern crate libc;
 
 #[macro_use]
diff --git a/tests/test_uniq.rs b/tests/test_uniq.rs
index f7cf42d45..481404b24 100644
--- a/tests/test_uniq.rs
+++ b/tests/test_uniq.rs
@@ -94,9 +94,16 @@ fn test_stdin_repeated_only() {
         .run().stdout_is_fixture("sorted-repeated-only.expected");
 }
 
+#[test]
+fn test_stdin_ignore_case() {
+    new_ucmd()
+        .args(&["-i"]).pipe_in_fixture(INPUT)
+        .run().stdout_is_fixture("sorted-ignore-case.expected");
+}
+
 #[test]
 fn test_stdin_zero_terminated() {
     new_ucmd()
         .args(&["-z"]).pipe_in_fixture(SORTED_ZERO_TERMINATED)
         .run().stdout_is_fixture("sorted-zero-terminated.expected");
-}
\ No newline at end of file
+}