From 9ff3ce4687a04ba2e59560583600779f4d10621b Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@joshtriplett.org>
Date: Sat, 24 Dec 2016 02:38:51 -0800
Subject: [PATCH] Use metadeps to specify pkg-config dependencies declaratively

This makes it easier for distribution packaging tools to generate
appropriate package dependencies.
---
 openssl-sys/Cargo.toml | 5 ++++-
 openssl-sys/build.rs   | 6 +++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/openssl-sys/Cargo.toml b/openssl-sys/Cargo.toml
index 24a16f5653..b3e672d6a0 100644
--- a/openssl-sys/Cargo.toml
+++ b/openssl-sys/Cargo.toml
@@ -14,8 +14,11 @@ build = "build.rs"
 libc = "0.2"
 
 [build-dependencies]
-pkg-config = "0.3"
+metadeps = "1"
 
 [target.'cfg(windows)'.dependencies]
 user32-sys = "0.2"
 gdi32-sys = "0.2"
+
+[package.metadata.pkg-config]
+openssl = "1.0.1"
diff --git a/openssl-sys/build.rs b/openssl-sys/build.rs
index ce990be3c5..b530c2e3fd 100644
--- a/openssl-sys/build.rs
+++ b/openssl-sys/build.rs
@@ -1,4 +1,4 @@
-extern crate pkg_config;
+extern crate metadeps;
 
 use std::collections::HashSet;
 use std::env;
@@ -172,8 +172,8 @@ fn try_pkg_config() {
     // cflags dirs for showing us lots of `-I`.
     env::set_var("PKG_CONFIG_ALLOW_SYSTEM_CFLAGS", "1");
 
-    let lib = match pkg_config::find_library("openssl") {
-        Ok(lib) => lib,
+    let lib = match metadeps::probe() {
+        Ok(mut libs) => libs.remove("openssl").unwrap(),
         Err(_) => return,
     };