VC++ 编译libcurl 支持SSL,GZIP（有脚本）
由于网上下载的 libcurl 不支持 gzip，只好自己动手编译，期间走了很多弯路，下面是最终成功的记录。
我所使用的环境 Visual Studio 2010 、 Windows 7 64 bit
下载文件
libcurl
下载页面 http://curl.haxx.se/download.html
下载地址 http://curl.haxx.se/download/curl-7.26.0.zip
zlib
下载页面 http://sourceforge.net/projects/libpng/files/zlib/
下载地址 http://sourceforge.net/projects/libpng/files/zlib/1.2.5/zlib125.zip/download
openssl
下载页面 http://www.openssl.org/source/
下载地址 http://www.openssl.org/source/openssl-1.0.0c.tar.gz
编译openssl还需下载ActivePerl
官方下载 http://www.activestate.com/activeperl/downloads
下载地址：http://downloads.activestate.com/ActivePerl/releases/5.16.0.1600/ActivePerl-5.16.0.1600-MSWin32-x86-295879.msi
X64下载地址：http://downloads.activestate.com/ActivePerl/releases/5.16.0.1600/ActivePerl-5.16.0.1600-MSWin32-x64-295879.msi
解压及安装文件
ActivePerl安装，双击直接下一步，默认设置到底。
zlib openssl libcurl分别解压，他们三个在同一级目录。
例如：D:UserDeweiTestCurlcurl-7.26.0、D:UserDeweiTestCurlopenssl-1.0.0c、D:UserDeweiTestCurlzlib-1.2.5
编译过程
zlib编译
用vs2010打开zlib-1.2.5/old/visualc6/zlib.dsw，选择DLL_Release编译，把编译生成的zlib-1.2.5/old/visualc6/Win32_DLL_Release/ zlib1.lib 复制到curl-7.26.0/lib目录下，重命名为 zdll.lib （注意必须为此文件名） 。
openssl编译
打开cmd，cd到openssl-1.0.0c目录下；
运行命令 perl Configure VC-WIN32
再运行 msdo_ms.bat
再运行 “C:Program Files (x86)Microsoft Visual Studio 10.0vcvars32.bat”
运行命令 nmake -f ms/ntdll.mak
编译curl-7.26.0
在curl-7.26.0/lib目录下新建release.bat,输入以下内容
call “C:/Program Files/Microsoft Visual Studio 10.0/VC/bin/vcvars32.bat”
set CFG=release-dll-ssl-dll-zlib-dll
set OPENSSL_PATH=../../openssl-1.0.0c
set ZLIB_PATH=../../zlib-1.2.5
nmake -f Makefile.vc10
保存，然后运行。
等待一会儿，就可以到 curl-7.26.0librelease-dll-ssl-dll-zlib-dll 目录下拷文件 libcurl_imp.lib和libcurl.dll 啦！
参考资料：curl-7.26.0/docs/INSTALL
Usage: nmake /f makefile.vc6 CFG=
where is one of:
release - release static library
release-ssl - release static library with ssl
release-zlib - release static library with zlib
release-ssl-zlib - release static library with ssl and zlib
release-ssl-ssh2-zlib - release static library with ssl, ssh2 and zlib
release-ssl-dll - release static library with dynamic ssl
release-zlib-dll - release static library with dynamic zlib
release-ssl-dll-zlib-dll - release static library with dynamic ssl and dynam
ic zlib
release-dll - release dynamic library
release-dll-ssl-dll - release dynamic library with dynamic ssl
release-dll-zlib-dll - release dynamic library with dynamic zlib
release-dll-ssl-dll-zlib-dll - release dynamic library with dynamic ssl and dyna
mic zlib
debug - debug static library
debug-ssl - debug static library with ssl
debug-zlib - debug static library with zlib
debug-ssl-zlib - debug static library with ssl and zlib
debug-ssl-ssh2-zlib - debug static library with ssl, ssh2 and zlib
debug-ssl-dll - debug static library with dynamic ssl
debug-zlib-dll - debug static library with dynamic zlib
debug-ssl-dll-zlib-dll - debug static library with dynamic ssl and dynamic
zlib
debug-dll - debug dynamic library
debug-dll-ssl-dll - debug dynamic library with dynamic ssl
debug-dll-zlib-dll - debug dynamic library with dynamic zlib1
debug-dll-ssl-dll-zlib-dll - debug dynamic library with dynamic ssl and dynami
c zlib 参考：
https://www.yuque.com/docs/share/e82e4c26-0c82-4fb7-8c1b-824b3e0afb72