目录
编译安装
安装编译环境：
yum -y groupinstall "Development Tools"
yum -y install libev libev-devel zlib zlib-devel openssl openssl-devel git
安装 OpenSSL：
mkdir /var/tmp
cd /var/tmp
wget https://openssl.org/source/openssl-1.0.2.tar.gz
tar -zxf openssl-1.0.2.tar.gz
cd openssl-1.0.2
mkdir /opt/openssl
./config --prefix=/opt/openssl
make
make test
make install
安装 nghttp2：
git clone https://github.com/tatsuhiro-t/nghttp2.git
cd nghttp2
autoreconf -i
automake
autoconf
./configure
make
make install
echo '/usr/local/lib' > /etc/ld.so.conf.d/custom-libs.conf
ldconfig
ldconfig -p| grep libnghttp2
安装 curl：
cd /var/tmp
git clone https://github.com/bagder/curl.git
cd curl
./buildconf
./configure --with-ssl=/opt/openssl --with-nghttp2=/usr/local --disable-file --without-pic --disable-shared
make
验证：
$ /var/tmp/curl/src/curl --version
curl 7.70.0-DEV (x86_64-unknown-linux-gnu) libcurl/7.70.0-DEV OpenSSL/1.0.2o nghttp2/1.41.0-DEV
Release-Date: [unreleased]
Protocols: dict ftp ftps gopher http https imap imaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS HTTP2 HTTPS-proxy IPv6 Largefile NTLM NTLM_WB SSL TLS-SRP UnixSockets
YUM 升级
安装新版 libcurl 的 yum 源：
rpm -ivh http://mirror.city-fan.org/ftp/contrib/yum-repo/city-fan.org-release-1-13.rhel6.noarch.rpm
升级：
yum upgrade libcurl
升级完成后可以卸载此 yum 源：
rpm -e city-fan.org-release