1.ftp://ftp.gnu.org/gnu/wget/官網下載最新的安裝包 wget-1.19.tar.gz
2.打開終端輸入 tar zxvf wget-1.9.1.tar.gz 解壓縮
3.進入wget所在文件夾 終端輸入cd wget-1.9.1
4.終端輸入 ./configure
如果出現configure: error: The pkg-config script could not be found or is too old. Make sure it is in your PATH or set the PKG_CONFIG environment variable to the full path to pkg-config.
終端輸入 ./configure --with-ssl=openssl ，
如果你是OS X 10.10+ and OS X 10.11+，建議輸入./configure --with-ssl=openssl --with-libssl-prefix=/usr/local/ssl，否則會報錯configure: error: –with-ssl=openssl was given, but SSL is not available，如果按照上面步步驟還是報錯，有可能是安裝包放置的位置不對，建議放在 usr/local/Cellar/wget-1.9.1，我是這樣解決的報錯 安裝成功的
6.make
7.sudo make install
8.可以輸入wget www.google.com 看看是否安裝成功