From c2edcabe3f377038322f6e07098b1885b91a666b Mon Sep 17 00:00:00 2001
From: guanqun <guanqun.lu@gmail.com>
Date: Thu, 26 Sep 2019 23:54:37 +0800
Subject: [PATCH] add dependencies for `pkg-config`

Otherwise, it complains:

    run pkg_config fail: "Failed to run `\"pkg-config\" \"--libs\" \"--cflags\" \"openssl\"`: No such file or directory (os error 2)"
---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 90a9c170391..4b0eb1f7347 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ Cargo requires the following tools and packages to build:
 * `git`
 * `python`
 * `curl` (on Unix)
+* `pkg-config` (on Unix, used to figure out the `libssl` headers/libraries)
 * OpenSSL headers (only for Unix, this is the `libssl-dev` package on ubuntu)
 * `cargo` and `rustc`