From e3a598fd578603573dfaa3e6229cb2616e20dfb6 Mon Sep 17 00:00:00 2001
From: Yong Wen Chua <lawliet89@users.noreply.github.com>
Date: Thu, 12 Nov 2020 11:28:20 +0800
Subject: [PATCH] Add vendored openssl crate to allow MUSL build

---
 Cargo.lock | 11 +++++++++++
 Cargo.toml | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index ef13714..76d2440 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -937,6 +937,15 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
+[[package]]
+name = "openssl-src"
+version = "111.12.0+1.1.1h"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "858a4132194f8570a7ee9eb8629e85b23cbc4565f2d4a162e87556e5956abf61"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "openssl-sys"
 version = "0.9.54"
@@ -946,6 +955,7 @@ dependencies = [
  "autocfg",
  "cc",
  "libc",
+ "openssl-src",
  "pkg-config",
  "vcpkg",
 ]
@@ -1810,6 +1820,7 @@ dependencies = [
  "failure",
  "gcp_auth",
  "log",
+ "openssl-sys",
  "reqwest",
  "rusoto_core",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index f95f461..23bc50c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,3 +21,14 @@ log = "0.4"
 url = "2.2"
 vault = { git = "https://github.com/lawliet89/vault-rs", package = "vault-rs", tag = "v0.2.0" }
 tokio = { version = "0.2", features=["macros", "rt-threaded"] }
+
+# Add openssl-sys as a direct dependency so it can be cross compiled to
+# x86_64-unknown-linux-musl using the "vendored" feature below
+# cf. https://github.com/sfackler/rust-openssl/issues/980#issuecomment-415757400
+openssl-sys = "*"
+
+[features]
+# Force openssl-sys to staticly link in the openssl library. Necessary when
+# cross compiling to x86_64-unknown-linux-musl.
+# cf. https://github.com/sfackler/rust-openssl/issues/980#issuecomment-415757400
+vendored = ["openssl-sys/vendored"]