From 844839d9a54fc32874d31002a6f976b06e59049b Mon Sep 17 00:00:00 2001
From: Thom Chiovoloni <tchiovoloni@mozilla.com>
Date: Tue, 7 Jan 2020 23:48:19 -0800
Subject: [PATCH] Allow crates with a direct dep on libsqlite3-sys to know if
 `sqlcipher` has been enabled

---
 libsqlite3-sys/build.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libsqlite3-sys/build.rs b/libsqlite3-sys/build.rs
index 3a98c5a..fcb27b8 100644
--- a/libsqlite3-sys/build.rs
+++ b/libsqlite3-sys/build.rs
@@ -206,6 +206,13 @@ mod build_linked {
         if cfg!(all(feature = "vcpkg", target_env = "msvc")) {
             println!("cargo:rerun-if-env-changed=VCPKGRS_DYNAMIC");
         }
+
+        // dependents can access `DEP_SQLITE3_LINK_TARGET` (`sqlite3` being the
+        // `links=` value in our Cargo.toml) to get this value. This might be
+        // useful if you need to ensure whatever crypto library sqlcipher relies
+        // on is available, for example.
+        println!("cargo:link-target={}", link_lib);
+
         // Allow users to specify where to find SQLite.
         if let Ok(dir) = env::var(format!("{}_LIB_DIR", env_prefix())) {
             // Try to use pkg-config to determine link commands