昨天升级iOS程序，顺便升级了依赖到的两个库，OpenSSL和cURL。
升级了版本，增加了新的iPhone5s的64位CPU的支持。
I have updated the dependency libraries of my iPhone app, OpenSSL and cURL.
Added support of iPhone5s new 64bit arm64 CPU.
Upgraded to latest version.
Approach
交叉编译这两个库的关键是两个参数：-isysroot和-miphoneos-version-min
cURL是拼上不同的参数实现的，OpenSSL已经内建有iphoneos-cross支持，修改一些参数来支持arm64和模拟器。
The key of cross compiling are two parameters: -isysroot and -miphoneos-version-min
cURL is configured using parameters.
While OpenSSL has a build-in target called iphoneos-cross, I added 64 bit support based on it.
Code
这两个项目的代码提交在了GitHub,目前用iOS SDK7.1在MacOSX 10.8验证通过.
Here are two projects on GitHub, tested on iOS SDK 7.1 and MacOSX 10.8 .
https://github.com/sinofool/build-openssl-ios
https://github.com/sinofool/build-libcurl-ios
Usage
这两个脚本不需要git clone再使用，下载好OpenSSL和cURL的源代码并解压缩，直接运行github上的脚本，就会编译好放在桌面上。
It is not necessary clone the code locally, download the sources from OpenSSL and cURL official website.
Run following scripts, results will be on the desktop.
curl -O http://www.openssl.org/source/openssl-1.0.1f.tar.gz tar xf openssl-1.0.1f.tar.gz cd openssl-1.0.1f curl https://raw.githubusercontent.com/sinofool/build-openssl-ios/master/build_openssl_dist.sh |bash
cURL也是一样：
curl -O http://curl.haxx.se/download/curl-7.35.0.tar.gz tar xf curl-7.35.0.tar.gz cd curl-7.35.0 curl https://raw.githubusercontent.com/sinofool/build-libcurl-ios/master/build_libcurl_dist.sh |bash