wget http://ftp.gnu.org/gnu/m4/m4-1.4.17.tar.gz
wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
wget http://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
wget http://mirror.hust.edu.cn/gnu/libtool/libtool-2.4.6.tar.gz
tar -xzvf xxx.tar.gz
cd xxx
./configure --prefix=/usr/local
make
sudo make install
* 下載libcurl源碼，運行libcurl初始化腳本
https://curl.haxx.se/download.html
cd curl
./buildconf
6)編譯libcurl
./configure --prefix=./libcurl --without-ssl --disable-ldap --disable-ldaps --without-zlib CC=clang
make
sudo make install