Works under old crypto API

macOS before 10.7 requires to use OpenSSL because a lot of things is
missed.

Author: catap

vendor/crypto-hash/Cargo.toml

@@ -23,7 +23,7 @@ license = "MIT"
 repository = "https://github.com/malept/crypto-hash"
 [dependencies.hex]
 version = "0.3"
-[target."cfg(not(any(target_os = \"windows\", target_os = \"macos\")))".dependencies.openssl]
+[target."cfg(not(any(target_os = \"windows\")))".dependencies.openssl]
 version = "0.10"
 [target."cfg(target_os = \"macos\")".dependencies.commoncrypto]
 version = "0.2"

vendor/crypto-hash/build.rs

@@ -0,0 +1,17 @@
+use std::env;
+
+fn main() {
+    if env::var("CRYPTO_HASH_FORCE_OPENSSL").is_ok() {
+        println!("cargo:rustc-cfg=feature=\"openssl\"");
+        return;
+    }
+
+    #[cfg(all(target_os = "macos", not(target_os = "windows")))]
+    println!("cargo:rustc-cfg=feature=\"commoncrypto\"");
+
+    #[cfg(all(not(target_os = "macos"), target_os = "windows"))]
+    println!("cargo:rustc-cfg=feature=\"winapi\"");
+
+    #[cfg(all(not(target_os = "macos"), not(target_os = "windows")))]
+    println!("cargo:rustc-cfg=feature=\"openssl\"");
+}

vendor/crypto-hash/src/lib.rs

@@ -43,23 +43,23 @@
 
 #![warn(missing_docs)]
 
-#[cfg(target_os = "macos")]
+#[cfg(feature = "commoncrypto")]
 extern crate commoncrypto;
 extern crate hex;
-#[cfg(not(any(target_os = "macos", target_os = "windows")))]
+#[cfg(feature = "openssl")]
 extern crate openssl;
-#[cfg(target_os = "windows")]
+#[cfg(feature = "winapi")]
 extern crate winapi;
 
 use std::io::Write;
 
-#[cfg(target_os = "macos")]
+#[cfg(feature = "commoncrypto")]
 #[path = "imp/commoncrypto.rs"]
 mod imp;
-#[cfg(target_os = "windows")]
+#[cfg(feature = "winapi")]
 #[path = "imp/cryptoapi.rs"]
 mod imp;
-#[cfg(not(any(target_os = "macos", target_os = "windows")))]
+#[cfg(feature = "openssl")]
 #[path = "imp/openssl.rs"]
 mod imp;
 

vendor/libgit2-sys/build.rs

@@ -132,7 +132,7 @@ fn main() {
 
         if windows {
             features.push_str("#define GIT_WINHTTP 1\n");
-        } else if target.contains("apple") {
+        } else if target.contains("apple") && cfg!(not(feature = "macos_before_10_7")) {
             features.push_str("#define GIT_SECURE_TRANSPORT 1\n");
         } else {
             features.push_str("#define GIT_OPENSSL 1\n");