Remove unused dependencies

This patch removes all dependencies that are no longer required since
the hidapi communication is replaced by libnitrokey.

Delete subrepo hid/:hid
Delete subrepo hidapi-sys/:hidapi-sys
Delete subrepo pkg-config/:pkg-config

12 files changed, 0 insertions, 1149 deletions

diff --git a/pkg-config/.gitignore b/pkg-config/.gitignore
deleted file mode 100644
index d6904d2..0000000
--- a/pkg-config/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-/target
-/Cargo.lock
-.idea
-*.iml
diff --git a/pkg-config/.travis.yml b/pkg-config/.travis.yml
deleted file mode 100644
index f184052..0000000
--- a/pkg-config/.travis.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-language: rust
-rust:
-  - stable
-  - beta
-  - nightly
-sudo: false
-before_script:
-  - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
-script:
-  - cargo build --verbose
-  - cargo test --verbose
-  - cargo doc --no-deps
-after_success:
-  - travis-cargo --only nightly doc-upload
-env:
-  global:
-    secure: "D/GKEEBQarjXTZ6NWzwQq39nQ892XJ9m3C9219K/6Us8jyjE5DBhosDPvg6pvRJtTLaghDxuhxqkHunayNL18IOvkNbfMjYsnkP8/yMftQUfRdNub6C1kXAi8guXjPd8rUwW0Oy8Nar61WAwWQgHkXfuSJ2em7u/Xk0tICPSwlA="
-
-
-
-notifications:
-  email:
-    on_success: never
diff --git a/pkg-config/CHANGELOG.md b/pkg-config/CHANGELOG.md
deleted file mode 100644
index 3f56db1..0000000
--- a/pkg-config/CHANGELOG.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# Changelog
-
-All notable changes to this project will be documented in this file.
-
-The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
-and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
-
-## [0.3.10] - 2018-04-23
-
-### Added
-- Allow static linking of /usr/ on macOS (#42)
-- Add support for parsing `-Wl,` style framework flags (#48)
-- Parse defines in `pkg-config` output (#49)
-- Rerun on `PKG_CONFIG_PATH` changes (#50)
-- Introduce target-scoped variables (#58)
-- Respect pkg-config escaping rules used with --cflags and --libs (#61)
-
-### Changed
-- Use `?` instead of `try!()` in the codebase (#63)
diff --git a/pkg-config/Cargo.toml b/pkg-config/Cargo.toml
deleted file mode 100644
index 6f06af5..0000000
--- a/pkg-config/Cargo.toml
+++ /dev/null
@@ -1,19 +0,0 @@
-[package]
-
-name = "pkg-config"
-version = "0.3.14"
-authors = ["Alex Crichton <alex@alexcrichton.com>"]
-license = "MIT/Apache-2.0"
-repository = "https://github.com/alexcrichton/pkg-config-rs"
-documentation = "https://docs.rs/pkg-config"
-description = """
-A library to run the pkg-config system tool at build time in order to be used in
-Cargo build scripts.
-"""
-keywords = ["build-dependencies"]
-
-[badges]
-travis-ci = { repository = "alexcrichton/pkg-config-rs" }
-
-[dev-dependencies]
-lazy_static = "1"
diff --git a/pkg-config/LICENSE-APACHE b/pkg-config/LICENSE-APACHE
deleted file mode 100644
index 16fe87b..0000000
--- a/pkg-config/LICENSE-APACHE
+++ /dev/null
@@ -1,201 +0,0 @@
-                              Apache License
-                        Version 2.0, January 2004
-                     http://www.apache.org/licenses/
-
-TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-1. Definitions.
-
-   "License" shall mean the terms and conditions for use, reproduction,
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-
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-5. Submission of Contributions. Unless You explicitly state otherwise,
-   any Contribution intentionally submitted for inclusion in the Work
-   by You to the Licensor shall be under the terms and conditions of
-   this License, without any additional terms or conditions.
-   Notwithstanding the above, nothing herein shall supersede or modify
-   the terms of any separate license agreement you may have executed
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-   origin of the Work and reproducing the content of the NOTICE file.
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-7. Disclaimer of Warranty. Unless required by applicable law or
-   agreed to in writing, Licensor provides the Work (and each
-   Contributor provides its Contributions) on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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-   whether in tort (including negligence), contract, or otherwise,
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-   negligent acts) or agreed to in writing, shall any Contributor be
-   liable to You for damages, including any direct, indirect, special,
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-
-APPENDIX: How to apply the Apache License to your work.
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-   To apply the Apache License to your work, attach the following
-   boilerplate notice, with the fields enclosed by brackets "[]"
-   replaced with your own identifying information. (Don't include
-   the brackets!)  The text should be enclosed in the appropriate
-   comment syntax for the file format. We also recommend that a
-   file or class name and description of purpose be included on the
-   same "printed page" as the copyright notice for easier
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-Copyright [yyyy] [name of copyright owner]
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-	http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
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diff --git a/pkg-config/LICENSE-MIT b/pkg-config/LICENSE-MIT
deleted file mode 100644
index 39e0ed6..0000000
--- a/pkg-config/LICENSE-MIT
+++ /dev/null
@@ -1,25 +0,0 @@
-Copyright (c) 2014 Alex Crichton
-
-Permission is hereby granted, free of charge, to any
-person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the
-Software without restriction, including without
-limitation the rights to use, copy, modify, merge,
-publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software
-is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions
-of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
-ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
-TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
-PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
-SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
diff --git a/pkg-config/README.md b/pkg-config/README.md
deleted file mode 100644
index cb9ebd5..0000000
--- a/pkg-config/README.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# pkg-config-rs
-
-[![Build Status](https://travis-ci.org/alexcrichton/pkg-config-rs.svg?branch=master)](https://travis-ci.org/alexcrichton/pkg-config-rs)
-[![Rust](https://img.shields.io/badge/rust-1.13%2B-blue.svg?maxAge=3600)](https://github.com/alexcrichton/pkg-config-rs/)
-
-[Documentation](https://docs.rs/pkg-config)
-
-A simple library meant to be used as a build dependency with Cargo packages in
-order to use the system `pkg-config` tool (if available) to determine where a
-library is located.
-
-You can use this crate directly to probe for specific libraries, or use
-[metadeps](https://github.com/joshtriplett/metadeps) to declare all your
-`pkg-config` dependencies in `Cargo.toml`.
-
-This library requires Rust 1.13+.
-
-# Example
-
-Find the system library named `foo`, with minimum version 1.2.3:
-
-```rust
-extern crate pkg_config;
-
-fn main() {
-    pkg_config::Config::new().atleast_version("1.2.3").probe("foo").unwrap();
-}
-```
-
-Find the system library named `foo`, with no version requirement (not
-recommended):
-
-```rust
-extern crate pkg_config;
-
-fn main() {
-    pkg_config::probe_library("foo").unwrap();
-}
-```
-
-# External configuration via target-scoped environment variables
-
-In cross-compilation context, it is useful to manage separately PKG_CONFIG_PATH
-and a few other variables for the `host` and the `target` platform.
-
-The supported variables are: `PKG_CONFIG_PATH`, `PKG_CONFIG_LIBDIR`, and
-`PKG_CONFIG_SYSROOT_DIR`.
-
-Each of these variables can also be supplied with certain prefixes and suffixes, in the following prioritized order:
-
-1. `<var>_<target>` - for example, `PKG_CONFIG_PATH_x86_64-unknown-linux-gnu`
-2. `<var>_<target_with_underscores>` - for example, `PKG_CONFIG_PATH_x86_64_unknown_linux_gnu`
-3. `<build-kind>_<var>` - for example, `HOST_PKG_CONFIG_PATH` or `TARGET_PKG_CONFIG_PATH`
-4. `<var>` - a plain `PKG_CONFIG_PATH`
-
-Also note that `PKG_CONFIG_ALLOW_CROSS` must always be set in cross-compilation context.
-
-# License
-
-This project is licensed under either of
-
- * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
-   http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license ([LICENSE-MIT](LICENSE-MIT) or
-   http://opensource.org/licenses/MIT)
-
-at your option.
-
-### Contribution
-
-Unless you explicitly state otherwise, any contribution intentionally submitted
-for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be
-dual licensed as above, without any additional terms or conditions.
diff --git a/pkg-config/src/lib.rs b/pkg-config/src/lib.rs
deleted file mode 100644
index 88dd310..0000000
--- a/pkg-config/src/lib.rs
+++ /dev/null
@@ -1,630 +0,0 @@
-//! A build dependency for Cargo libraries to find system artifacts through the
-//! `pkg-config` utility.
-//!
-//! This library will shell out to `pkg-config` as part of build scripts and
-//! probe the system to determine how to link to a specified library. The
-//! `Config` structure serves as a method of configuring how `pkg-config` is
-//! invoked in a builder style.
-//!
-//! A number of environment variables are available to globally configure how
-//! this crate will invoke `pkg-config`:
-//!
-//! * `PKG_CONFIG_ALLOW_CROSS` - if this variable is not set, then `pkg-config`
-//!   will automatically be disabled for all cross compiles.
-//! * `FOO_NO_PKG_CONFIG` - if set, this will disable running `pkg-config` when
-//!   probing for the library named `foo`.
-//!
-//! There are also a number of environment variables which can configure how a
-//! library is linked to (dynamically vs statically). These variables control
-//! whether the `--static` flag is passed. Note that this behavior can be
-//! overridden by configuring explicitly on `Config`. The variables are checked
-//! in the following order:
-//!
-//! * `FOO_STATIC` - pass `--static` for the library `foo`
-//! * `FOO_DYNAMIC` - do not pass `--static` for the library `foo`
-//! * `PKG_CONFIG_ALL_STATIC` - pass `--static` for all libraries
-//! * `PKG_CONFIG_ALL_DYNAMIC` - do not pass `--static` for all libraries
-//!
-//! After running `pkg-config` all appropriate Cargo metadata will be printed on
-//! stdout if the search was successful.
-//!
-//! # Example
-//!
-//! Find the system library named `foo`, with minimum version 1.2.3:
-//!
-//! ```no_run
-//! extern crate pkg_config;
-//!
-//! fn main() {
-//!     pkg_config::Config::new().atleast_version("1.2.3").probe("foo").unwrap();
-//! }
-//! ```
-//!
-//! Find the system library named `foo`, with no version requirement (not
-//! recommended):
-//!
-//! ```no_run
-//! extern crate pkg_config;
-//!
-//! fn main() {
-//!     pkg_config::probe_library("foo").unwrap();
-//! }
-//! ```
-//!
-//! Configure how library `foo` is linked to.
-//!
-//! ```no_run
-//! extern crate pkg_config;
-//!
-//! fn main() {
-//!     pkg_config::Config::new().atleast_version("1.2.3").statik(true).probe("foo").unwrap();
-//! }
-//! ```
-
-#![doc(html_root_url = "https://docs.rs/pkg-config/0.3")]
-
-#[allow(unused_imports)] // Required for Rust <1.23
-use std::ascii::AsciiExt;
-use std::collections::HashMap;
-use std::env;
-use std::error;
-use std::ffi::{OsStr, OsString};
-use std::fmt;
-use std::io;
-use std::path::{PathBuf, Path};
-use std::process::{Command, Output};
-use std::str;
-
-pub fn target_supported() -> bool {
-    let target = env::var("TARGET").unwrap_or_else(|_| String::new());
-    let host = env::var("HOST").unwrap_or_else(|_| String::new());
-
-    // Only use pkg-config in host == target situations by default (allowing an
-    // override).
-    (host == target || env::var_os("PKG_CONFIG_ALLOW_CROSS").is_some())
-}
-
-#[derive(Clone, Default)]
-pub struct Config {
-    statik: Option<bool>,
-    atleast_version: Option<String>,
-    extra_args: Vec<OsString>,
-    cargo_metadata: bool,
-    env_metadata: bool,
-    print_system_libs: bool,
-}
-
-#[derive(Debug)]
-pub struct Library {
-    pub libs: Vec<String>,
-    pub link_paths: Vec<PathBuf>,
-    pub frameworks: Vec<String>,
-    pub framework_paths: Vec<PathBuf>,
-    pub include_paths: Vec<PathBuf>,
-    pub defines: HashMap<String, Option<String>>,
-    pub version: String,
-    _priv: (),
-}
-
-/// Represents all reasons `pkg-config` might not succeed or be run at all.
-pub enum Error {
-    /// Aborted because of `*_NO_PKG_CONFIG` environment variable.
-    ///
-    /// Contains the name of the responsible environment variable.
-    EnvNoPkgConfig(String),
-
-    /// Cross compilation detected.
-    ///
-    /// Override with `PKG_CONFIG_ALLOW_CROSS=1`.
-    CrossCompilation,
-
-    /// Failed to run `pkg-config`.
-    ///
-    /// Contains the command and the cause.
-    Command { command: String, cause: io::Error },
-
-    /// `pkg-config` did not exit sucessfully.
-    ///
-    /// Contains the command and output.
-    Failure { command: String, output: Output },
-
-    #[doc(hidden)]
-    // please don't match on this, we're likely to add more variants over time
-    __Nonexhaustive,
-}
-
-impl error::Error for Error {
-    fn description(&self) -> &str {
-        match *self {
-            Error::EnvNoPkgConfig(_) => "pkg-config requested to be aborted",
-            Error::CrossCompilation => {
-                "pkg-config doesn't handle cross compilation. \
-                 Use PKG_CONFIG_ALLOW_CROSS=1 to override"
-            }
-            Error::Command { .. } => "failed to run pkg-config",
-            Error::Failure { .. } => "pkg-config did not exit sucessfully",
-            Error::__Nonexhaustive => panic!(),
-        }
-    }
-
-    fn cause(&self) -> Option<&error::Error> {
-        match *self {
-            Error::Command { ref cause, .. } => Some(cause),
-            _ => None,
-        }
-    }
-}
-
-// Workaround for temporary lack of impl Debug for Output in stable std
-struct OutputDebugger<'a>(&'a Output);
-
-// Lifted from 1.7 std
-impl<'a> fmt::Debug for OutputDebugger<'a> {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        let stdout_utf8 = str::from_utf8(&self.0.stdout);
-        let stdout_debug: &fmt::Debug = match stdout_utf8 {
-            Ok(ref str) => str,
-            Err(_) => &self.0.stdout
-        };
-
-        let stderr_utf8 = str::from_utf8(&self.0.stderr);
-        let stderr_debug: &fmt::Debug = match stderr_utf8 {
-            Ok(ref str) => str,
-            Err(_) => &self.0.stderr
-        };
-
-        fmt.debug_struct("Output")
-           .field("status", &self.0.status)
-           .field("stdout", stdout_debug)
-           .field("stderr", stderr_debug)
-           .finish()
-    }
-}
-
-// Workaround for temporary lack of impl Debug for Output in stable std, continued
-impl fmt::Debug for Error {
-    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        match *self {
-            Error::EnvNoPkgConfig(ref name) => {
-                f.debug_tuple("EnvNoPkgConfig")
-                 .field(name)
-                 .finish()
-            }
-            Error::CrossCompilation => write!(f, "CrossCompilation"),
-            Error::Command { ref command, ref cause } => {
-                f.debug_struct("Command")
-                 .field("command", command)
-                 .field("cause", cause)
-                 .finish()
-            }
-            Error::Failure { ref command, ref output } => {
-                f.debug_struct("Failure")
-                 .field("command", command)
-                 .field("output", &OutputDebugger(output))
-                 .finish()
-            }
-            Error::__Nonexhaustive => panic!(),
-        }
-    }
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        match *self {
-            Error::EnvNoPkgConfig(ref name) => {
-                write!(f, "Aborted because {} is set", name)
-            }
-            Error::CrossCompilation => {
-                write!(f, "Cross compilation detected. \
-                       Use PKG_CONFIG_ALLOW_CROSS=1 to override")
-            }
-            Error::Command { ref command, ref cause } => {
-                write!(f, "Failed to run `{}`: {}", command, cause)
-            }
-            Error::Failure { ref command, ref output } => {
-                let stdout = str::from_utf8(&output.stdout).unwrap();
-                let stderr = str::from_utf8(&output.stderr).unwrap();
-                write!(f, "`{}` did not exit successfully: {}", command, output.status)?;
-                if !stdout.is_empty() {
-                    write!(f, "\n--- stdout\n{}", stdout)?;
-                }
-                if !stderr.is_empty() {
-                    write!(f, "\n--- stderr\n{}", stderr)?;
-                }
-                Ok(())
-            }
-            Error::__Nonexhaustive => panic!(),
-        }
-    }
-}
-
-/// Deprecated in favor of the probe_library function
-#[doc(hidden)]
-pub fn find_library(name: &str) -> Result<Library, String> {
-    probe_library(name).map_err(|e| e.to_string())
-}
-
-/// Simple shortcut for using all default options for finding a library.
-pub fn probe_library(name: &str) -> Result<Library, Error> {
-    Config::new().probe(name)
-}
-
-/// Run `pkg-config` to get the value of a variable from a package using
-/// --variable.
-pub fn get_variable(package: &str, variable: &str) -> Result<String, Error> {
-    let arg = format!("--variable={}", variable);
-    let cfg = Config::new();
-    let out = run(cfg.command(package, &[&arg]))?;
-    Ok(str::from_utf8(&out).unwrap().trim_right().to_owned())
-}
-
-impl Config {
-    /// Creates a new set of configuration options which are all initially set
-    /// to "blank".
-    pub fn new() -> Config {
-        Config {
-            statik: None,
-            atleast_version: None,
-            extra_args: vec![],
-            print_system_libs: true,
-            cargo_metadata: true,
-            env_metadata: false,
-        }
-    }
-
-    /// Indicate whether the `--static` flag should be passed.
-    ///
-    /// This will override the inference from environment variables described in
-    /// the crate documentation.
-    pub fn statik(&mut self, statik: bool) -> &mut Config {
-        self.statik = Some(statik);
-        self
-    }
-
-    /// Indicate that the library must be at least version `vers`.
-    pub fn atleast_version(&mut self, vers: &str) -> &mut Config {
-        self.atleast_version = Some(vers.to_string());
-        self
-    }
-
-    /// Add an argument to pass to pkg-config.
-    ///
-    /// It's placed after all of the arguments generated by this library.
-    pub fn arg<S: AsRef<OsStr>>(&mut self, arg: S) -> &mut Config {
-        self.extra_args.push(arg.as_ref().to_os_string());
-        self
-    }
-
-    /// Define whether metadata should be emitted for cargo allowing it to
-    /// automatically link the binary. Defaults to `true`.
-    pub fn cargo_metadata(&mut self, cargo_metadata: bool) -> &mut Config {
-        self.cargo_metadata = cargo_metadata;
-        self
-    }
-
-    /// Define whether metadata should be emitted for cargo allowing to
-    /// automatically rebuild when environment variables change. Defaults to
-    /// `false`.
-    pub fn env_metadata(&mut self, env_metadata: bool) -> &mut Config {
-        self.env_metadata = env_metadata;
-        self
-    }
-
-    /// Enable or disable the `PKG_CONFIG_ALLOW_SYSTEM_LIBS` environment
-    /// variable.
-    ///
-    /// This env var is enabled by default.
-    pub fn print_system_libs(&mut self, print: bool) -> &mut Config {
-        self.print_system_libs = print;
-        self
-    }
-
-    /// Deprecated in favor fo the `probe` function
-    #[doc(hidden)]
-    pub fn find(&self, name: &str) -> Result<Library, String> {
-        self.probe(name).map_err(|e| e.to_string())
-    }
-
-    /// Run `pkg-config` to find the library `name`.
-    ///
-    /// This will use all configuration previously set to specify how
-    /// `pkg-config` is run.
-    pub fn probe(&self, name: &str) -> Result<Library, Error> {
-        let abort_var_name = format!("{}_NO_PKG_CONFIG", envify(name));
-        if self.env_var_os(&abort_var_name).is_some() {
-            return Err(Error::EnvNoPkgConfig(abort_var_name))
-        } else if !target_supported() {
-            return Err(Error::CrossCompilation);
-        }
-
-        let mut library = Library::new();
-
-        let output = run(self.command(name, &["--libs", "--cflags"]))?;
-        library.parse_libs_cflags(name, &output, self);
-
-        let output = run(self.command(name, &["--modversion"]))?;
-        library.parse_modversion(str::from_utf8(&output).unwrap());
-
-        Ok(library)
-    }
-
-    /// Deprecated in favor of the top level `get_variable` function
-    #[doc(hidden)]
-    pub fn get_variable(package: &str, variable: &str) -> Result<String, String> {
-        get_variable(package, variable).map_err(|e| e.to_string())
-    }
-
-    fn targetted_env_var(&self, var_base: &str) -> Result<String, env::VarError> {
-        if let Ok(target) = env::var("TARGET") {
-            let host = env::var("HOST")?;
-            let kind = if host == target { "HOST" } else { "TARGET" };
-            let target_u = target.replace("-", "_");
-
-            self.env_var(&format!("{}_{}", var_base, target))
-                .or_else(|_| self.env_var(&format!("{}_{}", var_base, target_u)))
-                .or_else(|_| self.env_var(&format!("{}_{}", kind, var_base)))
-                .or_else(|_| self.env_var(var_base))
-        } else {
-            self.env_var(var_base)
-        }
-    }
-
-    fn env_var(&self, name: &str) -> Result<String, env::VarError> {
-        if self.env_metadata {
-            println!("cargo:rerun-if-env-changed={}", name);
-        }
-        env::var(name)
-    }
-
-    fn env_var_os(&self, name: &str) -> Option<OsString> {
-        if self.env_metadata {
-            println!("cargo:rerun-if-env-changed={}", name);
-        }
-        env::var_os(name)
-    }
-
-    fn is_static(&self, name: &str) -> bool {
-        self.statik.unwrap_or_else(|| self.infer_static(name))
-    }
-
-    fn command(&self, name: &str, args: &[&str]) -> Command {
-        let exe = self.env_var("PKG_CONFIG").unwrap_or_else(|_| String::from("pkg-config"));
-        let mut cmd = Command::new(exe);
-        if self.is_static(name) {
-            cmd.arg("--static");
-        }
-        cmd.args(args)
-           .args(&self.extra_args);
-
-        if let Ok(value) = self.targetted_env_var("PKG_CONFIG_PATH") {
-            cmd.env("PKG_CONFIG_PATH", value);
-        }
-        if let Ok(value) = self.targetted_env_var("PKG_CONFIG_LIBDIR") {
-            cmd.env("PKG_CONFIG_LIBDIR", value);
-        }
-        if let Ok(value) = self.targetted_env_var("PKG_CONFIG_SYSROOT_DIR") {
-            cmd.env("PKG_CONFIG_SYSROOT_DIR", value);
-        }
-        if self.print_system_libs {
-            cmd.env("PKG_CONFIG_ALLOW_SYSTEM_LIBS", "1");
-        }
-        if let Some(ref version) = self.atleast_version {
-            cmd.arg(&format!("{} >= {}", name, version));
-        } else {
-            cmd.arg(name);
-        }
-        cmd
-    }
-
-    fn print_metadata(&self, s: &str) {
-        if self.cargo_metadata {
-            println!("cargo:{}", s);
-        }
-    }
-
-    fn infer_static(&self, name: &str) -> bool {
-        let name = envify(name);
-        if self.env_var_os(&format!("{}_STATIC", name)).is_some() {
-            true
-        } else if self.env_var_os(&format!("{}_DYNAMIC", name)).is_some() {
-            false
-        } else if self.env_var_os("PKG_CONFIG_ALL_STATIC").is_some() {
-            true
-        } else if self.env_var_os("PKG_CONFIG_ALL_DYNAMIC").is_some() {
-            false
-        } else {
-            false
-        }
-    }
-}
-
-impl Library {
-    fn new() -> Library {
-        Library {
-            libs: Vec::new(),
-            link_paths: Vec::new(),
-            include_paths: Vec::new(),
-            frameworks: Vec::new(),
-            framework_paths: Vec::new(),
-            defines: HashMap::new(),
-            version: String::new(),
-            _priv: (),
-        }
-    }
-
-    fn parse_libs_cflags(&mut self, name: &str, output: &[u8], config: &Config) {
-        let mut is_msvc = false;
-        if let Ok(target) = env::var("TARGET") {
-            if target.contains("msvc") {
-                is_msvc = true;
-            }
-        }
-
-        let words = split_flags(output);
-        let parts = words.iter()
-                          .filter(|l| l.len() > 2)
-                          .map(|arg| (&arg[0..2], &arg[2..]))
-                          .collect::<Vec<_>>();
-
-        let mut dirs = Vec::new();
-        let statik = config.is_static(name);
-        for &(flag, val) in &parts {
-            match flag {
-                "-L" => {
-                    let meta = format!("rustc-link-search=native={}", val);
-                    config.print_metadata(&meta);
-                    dirs.push(PathBuf::from(val));
-                    self.link_paths.push(PathBuf::from(val));
-                }
-                "-F" => {
-                    let meta = format!("rustc-link-search=framework={}", val);
-                    config.print_metadata(&meta);
-                    self.framework_paths.push(PathBuf::from(val));
-                }
-                "-I" => {
-                    self.include_paths.push(PathBuf::from(val));
-                }
-                "-l" => {
-                    // These are provided by the CRT with MSVC
-                    if is_msvc && ["m", "c", "pthread"].contains(&val) {
-                        continue;
-                    }
-
-                    if statik && is_static_available(val, &dirs) {
-                        let meta = format!("rustc-link-lib=static={}", val);
-                        config.print_metadata(&meta);
-                    } else {
-                        let meta = format!("rustc-link-lib={}", val);
-                        config.print_metadata(&meta);
-                    }
-
-                    self.libs.push(val.to_string());
-                }
-                "-D" => {
-                    let mut iter = val.split("=");
-                    self.defines.insert(iter.next().unwrap().to_owned(), iter.next().map(|s| s.to_owned()));
-                }
-                _ => {}
-            }
-        }
-
-        let mut iter = words.iter()
-                            .flat_map(|arg| if arg.starts_with("-Wl,") {
-                                 arg[4..].split(',').collect()
-                             } else {
-                                 vec![arg.as_ref()]
-                             });
-        while let Some(part) = iter.next() {
-            if part != "-framework" {
-                continue
-            }
-            if let Some(lib) = iter.next() {
-                let meta = format!("rustc-link-lib=framework={}", lib);
-                config.print_metadata(&meta);
-                self.frameworks.push(lib.to_string());
-            }
-        }
-    }
-
-    fn parse_modversion(&mut self, output: &str) {
-        self.version.push_str(output.trim());
-    }
-}
-
-fn envify(name: &str) -> String {
-    name.chars().map(|c| c.to_ascii_uppercase()).map(|c| {
-        if c == '-' {'_'} else {c}
-    }).collect()
-}
-
-/// System libraries should only be linked dynamically
-fn is_static_available(name: &str, dirs: &[PathBuf]) -> bool {
-    let libname = format!("lib{}.a", name);
-    let system_roots = if cfg!(target_os = "macos") {
-        vec![Path::new("/Library"), Path::new("/System")]
-    } else {
-        vec![Path::new("/usr")]
-    };
-
-    dirs.iter().any(|dir| {
-        !system_roots.iter().any(|sys| dir.starts_with(sys)) &&
-        dir.join(&libname).exists()
-    })
-}
-
-fn run(mut cmd: Command) -> Result<Vec<u8>, Error> {
-    match cmd.output() {
-        Ok(output) => {
-            if output.status.success() {
-                Ok(output.stdout)
-            } else {
-                Err(Error::Failure {
-                    command: format!("{:?}", cmd),
-                    output: output,
-                })
-            }
-        }
-        Err(cause) => Err(Error::Command {
-            command: format!("{:?}", cmd),
-            cause: cause,
-        }),
-    }
-}
-
-/// Split output produced by pkg-config --cflags and / or --libs into separate flags.
-///
-/// Backslash in output is used to preserve literal meaning of following byte.  Different words are
-/// separated by unescaped space. Other whitespace characters generally should not occur unescaped
-/// at all, apart from the newline at the end of output. For compatibility with what others
-/// consumers of pkg-config output would do in this scenario, they are used here for splitting as
-/// well.
-fn split_flags(output: &[u8]) -> Vec<String> {
-    let mut word = Vec::new();
-    let mut words = Vec::new();
-    let mut escaped = false;
-
-    for &b in output {
-        match b {
-            _ if escaped => {
-                escaped = false;
-                word.push(b);
-            }
-            b'\\' => {
-                escaped = true
-            }
-            b'\t' | b'\n' | b'\r' | b' ' => {
-                if !word.is_empty() {
-                    words.push(String::from_utf8(word).unwrap());
-                    word = Vec::new();
-                }
-            }
-            _ => word.push(b),
-        }
-    }
-
-    if !word.is_empty() {
-        words.push(String::from_utf8(word).unwrap());
-    }
-
-    words
-}
-
-#[test]
-#[cfg(target_os = "macos")]
-fn system_library_mac_test() {
-    assert!(!is_static_available("PluginManager", &[PathBuf::from("/Library/Frameworks")]));
-    assert!(!is_static_available("python2.7", &[PathBuf::from("/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config")]));
-    assert!(!is_static_available("ffi_convenience", &[PathBuf::from("/Library/Ruby/Gems/2.0.0/gems/ffi-1.9.10/ext/ffi_c/libffi-x86_64/.libs")]));
-
-    // Homebrew is in /usr/local, and it's not a part of the OS
-    if Path::new("/usr/local/lib/libpng16.a").exists() {
-        assert!(is_static_available("png16", &[PathBuf::from("/usr/local/lib")]));
-    }
-}
-
-#[test]
-#[cfg(target_os = "linux")]
-fn system_library_linux_test() {
-    assert!(!is_static_available("util", &[PathBuf::from("/usr/lib/x86_64-linux-gnu")]));
-    assert!(!is_static_available("dialog", &[PathBuf::from("/usr/lib")]));
-}
diff --git a/pkg-config/tests/escape.pc b/pkg-config/tests/escape.pc
deleted file mode 100644
index 701c4bf..0000000
--- a/pkg-config/tests/escape.pc
+++ /dev/null
@@ -1,5 +0,0 @@
-Name: Escape
-Version: 4.2.0
-Description: Escape utility library
-Libs: -Llink\ path\ with\ spaces
-Cflags: -Iinclude\ path\ with\ spaces -DA=\"escaped\ string\'\ literal\" -DB=ESCAPED\ IDENTIFIER -DFOX=🦊
diff --git a/pkg-config/tests/foo.pc b/pkg-config/tests/foo.pc
deleted file mode 100644
index b1ae3d8..0000000
--- a/pkg-config/tests/foo.pc
+++ /dev/null
@@ -1,16 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include/valgrind
-arch=amd64
-os=linux
-platform=amd64-linux
-valt_load_address=0x38000000
-
-Name: Valgrind
-Description: A dynamic binary instrumentation framework
-Version: 3.10.0.SVN
-Requires:
-Libs: -L${libdir}/valgrind -lcoregrind-amd64-linux -lvex-amd64-linux -lgcc
-Cflags: -I${includedir}
-
diff --git a/pkg-config/tests/framework.pc b/pkg-config/tests/framework.pc
deleted file mode 100644
index fec17f4..0000000
--- a/pkg-config/tests/framework.pc
+++ /dev/null
@@ -1,16 +0,0 @@
-prefix=/usr
-exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
-includedir=${prefix}/include/valgrind
-arch=amd64
-os=linux
-platform=amd64-linux
-valt_load_address=0x38000000
-
-Name: Valgrind
-Description: A dynamic binary instrumentation framework
-Version: 3.10.0.SVN
-Requires:
-Libs: -F${libdir} -framework foo -Wl,-framework,bar -Wl,-framework -Wl,baz -Wl,-framework,foobar,-framework,foobaz
-Cflags: -I${includedir}
-
diff --git a/pkg-config/tests/test.rs b/pkg-config/tests/test.rs
deleted file mode 100644
index fad0fcf..0000000
--- a/pkg-config/tests/test.rs
+++ /dev/null
@@ -1,118 +0,0 @@
-extern crate pkg_config;
-#[macro_use]
-extern crate lazy_static;
-
-use pkg_config::Error;
-use std::env;
-use std::sync::Mutex;
-use std::path::PathBuf;
-
-lazy_static! {
-    static ref LOCK: Mutex<()> = Mutex::new(());
-}
-
-fn reset() {
-    for (k, _) in env::vars() {
-        if k.contains("DYNAMIC") ||
-           k.contains("STATIC") ||
-           k.contains("PKG_CONFIG_ALLOW_CROSS") ||
-           k.contains("FOO_NO_PKG_CONFIG") {
-            env::remove_var(&k);
-        }
-    }
-    env::remove_var("TARGET");
-    env::remove_var("HOST");
-    env::set_var("PKG_CONFIG_PATH", &env::current_dir().unwrap().join("tests"));
-}
-
-fn find(name: &str) -> Result<pkg_config::Library, Error> {
-    pkg_config::probe_library(name)
-}
-
-#[test]
-fn cross_disabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    match find("foo") {
-        Err(Error::CrossCompilation) => {},
-        x => panic!("Error::CrossCompilation expected, found `{:?}`", x),
-    }
-}
-
-#[test]
-fn cross_enabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("TARGET", "foo");
-    env::set_var("HOST", "bar");
-    env::set_var("PKG_CONFIG_ALLOW_CROSS", "1");
-    find("foo").unwrap();
-}
-
-#[test]
-fn package_disabled() {
-    let _g = LOCK.lock();
-    reset();
-    env::set_var("FOO_NO_PKG_CONFIG", "1");
-    match find("foo") {
-        Err(Error::EnvNoPkgConfig(name)) => {
-            assert_eq!(name, "FOO_NO_PKG_CONFIG")
-        }
-        x => panic!("Error::EnvNoPkgConfig expected, found `{:?}`", x),
-    }
-}
-
-#[test]
-fn output_ok() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("foo").unwrap();
-    assert!(lib.libs.contains(&"gcc".to_string()));
-    assert!(lib.libs.contains(&"coregrind-amd64-linux".to_string()));
-    assert!(lib.link_paths.contains(&PathBuf::from("/usr/lib/valgrind")));
-}
-
-#[test]
-fn escapes() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("escape").unwrap();
-    assert!(lib.include_paths.contains(&PathBuf::from("include path with spaces")));
-    assert!(lib.link_paths.contains(&PathBuf::from("link path with spaces")));
-    assert_eq!(lib.defines.get("A"),
-               Some(&Some("\"escaped string' literal\"".to_owned())));
-    assert_eq!(lib.defines.get("B"),
-               Some(&Some("ESCAPED IDENTIFIER".to_owned())));
-    assert_eq!(lib.defines.get("FOX"),
-               Some(&Some("🦊".to_owned())));
-}
-
-#[test]
-fn framework() {
-    let _g = LOCK.lock();
-    reset();
-    let lib = find("framework").unwrap();
-    assert!(lib.frameworks.contains(&"foo".to_string()));
-    assert!(lib.frameworks.contains(&"bar".to_string()));
-    assert!(lib.frameworks.contains(&"baz".to_string()));
-    assert!(lib.frameworks.contains(&"foobar".to_string()));
-    assert!(lib.frameworks.contains(&"foobaz".to_string()));
-    assert!(lib.framework_paths.contains(&PathBuf::from("/usr/lib")));
-}
-
-#[test]
-fn get_variable() {
-    let _g = LOCK.lock();
-    reset();
-    let prefix = pkg_config::get_variable("foo", "prefix").unwrap();
-    assert_eq!(prefix, "/usr");
-}
-
-#[test]
-fn version() {
-    let _g = LOCK.lock();
-    reset();
-    assert_eq!(&find("foo").unwrap().version[..], "3.10.0.SVN");
-}