9 files changed, 8 insertions, 8 deletions
diff --git a/Cargo.lock b/Cargo.lock
index 908bfa35557..e8a7413ff35 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3694,6 +3694,7 @@ dependencies = [
  "indexmap",
  "jobserver",
  "lazy_static 1.4.0",
+ "libc",
  "log",
  "measureme",
  "parking_lot 0.10.0",
@@ -3713,6 +3714,7 @@ version = "0.0.0"
 dependencies = [
  "env_logger 0.7.1",
  "lazy_static 1.4.0",
+ "libc",
  "log",
  "rustc_ast",
  "rustc_ast_pretty",
@@ -3867,6 +3869,7 @@ dependencies = [
 name = "rustc_interface"
 version = "0.0.0"
 dependencies = [
+ "libc",
  "log",
  "once_cell",
  "rustc-rayon",
@@ -3960,6 +3963,7 @@ name = "rustc_metadata"
 version = "0.0.0"
 dependencies = [
  "flate2",
+ "libc",
  "log",
  "memmap",
  "rustc_ast",
diff --git a/src/librustc_data_structures/Cargo.toml b/src/librustc_data_structures/Cargo.toml
index c5707bd24f7..6d7022acc78 100644
--- a/src/librustc_data_structures/Cargo.toml
+++ b/src/librustc_data_structures/Cargo.toml
@@ -27,6 +27,7 @@ smallvec = { version = "1.0", features = ["union", "may_dangle"] }
 rustc_index = { path = "../librustc_index", package = "rustc_index" }
 bitflags = "1.2.1"
 measureme = "0.7.1"
+libc = "0.2"
 
 [dependencies.parking_lot]
 version = "0.10"
diff --git a/src/librustc_data_structures/lib.rs b/src/librustc_data_structures/lib.rs
index ba82e58d7a9..d0180911567 100644
--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@@ -26,8 +26,6 @@
 
 #[macro_use]
 extern crate log;
-#[cfg(unix)]
-extern crate libc;
 #[macro_use]
 extern crate cfg_if;
 
diff --git a/src/librustc_driver/Cargo.toml b/src/librustc_driver/Cargo.toml
index 652f16c2e08..cfd103aed32 100644
--- a/src/librustc_driver/Cargo.toml
+++ b/src/librustc_driver/Cargo.toml
@@ -11,6 +11,7 @@ crate-type = ["dylib"]
 
 [dependencies]
 lazy_static = "1.0"
+libc = "0.2"
 log = "0.4"
 env_logger = { version = "0.7", default-features = false }
 rustc_middle = { path = "../librustc_middle" }
diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index acf8f1adbc2..ad2d7b12d4a 100644
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -9,8 +9,6 @@
 #![recursion_limit = "256"]
 
 pub extern crate getopts;
-#[cfg(unix)]
-extern crate libc;
 #[macro_use]
 extern crate log;
 #[macro_use]
diff --git a/src/librustc_interface/Cargo.toml b/src/librustc_interface/Cargo.toml
index c9d81e51641..8ea866d7cab 100644
--- a/src/librustc_interface/Cargo.toml
+++ b/src/librustc_interface/Cargo.toml
@@ -10,6 +10,7 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
+libc = "0.2"
 log = "0.4"
 rayon = { version = "0.3.0", package = "rustc-rayon" }
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
diff --git a/src/librustc_interface/lib.rs b/src/librustc_interface/lib.rs
index ba1e2216ca8..0650d090034 100644
--- a/src/librustc_interface/lib.rs
+++ b/src/librustc_interface/lib.rs
@@ -6,9 +6,6 @@
 #![feature(generators)]
 #![recursion_limit = "256"]
 
-#[cfg(unix)]
-extern crate libc;
-
 mod callbacks;
 pub mod interface;
 mod passes;
diff --git a/src/librustc_metadata/Cargo.toml b/src/librustc_metadata/Cargo.toml
index a88ccd52e91..b03e884cdaf 100644
--- a/src/librustc_metadata/Cargo.toml
+++ b/src/librustc_metadata/Cargo.toml
@@ -11,6 +11,7 @@ doctest = false
 
 [dependencies]
 flate2 = "1.0"
+libc = "0.2"
 log = "0.4"
 memmap = "0.7"
 smallvec = { version = "1.0", features = ["union", "may_dangle"] }
diff --git a/src/librustc_metadata/lib.rs b/src/librustc_metadata/lib.rs
index 22a2bf28041..4659be8c195 100644
--- a/src/librustc_metadata/lib.rs
+++ b/src/librustc_metadata/lib.rs
@@ -10,7 +10,6 @@
 #![feature(stmt_expr_attributes)]
 #![recursion_limit = "256"]
 
-extern crate libc;
 extern crate proc_macro;
 
 #[macro_use]