1 files changed, 23 insertions, 0 deletions
diff --git a/vendor/curl/build.rs b/vendor/curl/build.rs
new file mode 100644
index 0000000..11539d4
--- /dev/null
+++ b/vendor/curl/build.rs
@@ -0,0 +1,23 @@
+use std::env;
+
+fn main() {
+    // OpenSSL >= 1.1.0 can be initialized concurrently and is initialized correctly by libcurl.
+    // <= 1.0.2 need locking callbacks, which are provided by openssl_sys::init().
+    let use_openssl = match env::var("DEP_OPENSSL_VERSION_NUMBER") {
+        Ok(version) => {
+            let version = u64::from_str_radix(&version, 16).unwrap();
+            if version < 0x1_01_00_00_0 {
+                println!("cargo:rustc-cfg=need_openssl_init");
+            }
+            true
+        }
+        Err(_) => false,
+    };
+
+    if use_openssl {
+        // The system libcurl should have the default certificate paths configured.
+        if env::var_os("DEP_CURL_STATIC").is_some() {
+            println!("cargo:rustc-cfg=need_openssl_probe");
+        }
+    }
+}