blfs wget项目地址：http://www.linuxfromscratch.org/blfs/view/8.3/basicnet/wget.html
推荐依赖：make-ca-0.8（必须安装，用于运行时校验秘钥）
1.用主机下载wget和make-ca包，并移动到/sources/blfs-sources,例如：
sudo mv '/home/renren/下载/make-ca-0.8.tar.gz' '/home/renren/下载/wget-1.19.5.tar.gz' /mnt/lfs/sources/blfs-sources/
2.校验md5
md5sum -c md5sums
3.解压wget包并进入包目录
tar -xvf wget-1.19..tar.gz cd wget-1.19.
4.使用书中的说明编译安装
./configure --prefix=/usr \
--sysconfdir=/etc \
--with-ssl=openssl &&
make make -j8 check make install
5.返回blfs-sources目录并删除包目录
cd $LFS/sources/blfs-sources rm -rf wget-1.19.
6.解压make-ca包并进入包目录
tar -xvf make-ca-0.8.tar.gz cd make-ca-0.8
7.参照书中说明编译安装
install -vdm755 /etc/ssl/local &&
wget http://www.cacert.org/certs/root.crt &&
wget http://www.cacert.org/certs/class3.crt &&
openssl x509 -in root.crt -text -fingerprint -setalias "CAcert Class 1 root" \
-addtrust serverAuth -addtrust emailProtection -addtrust codeSigning \
> /etc/ssl/local/CAcert_Class_1_root.pem &&
openssl x509 -in class3.crt -text -fingerprint -setalias "CAcert Class 3 root" \
-addtrust serverAuth -addtrust emailProtection -addtrust codeSigning \
> /etc/ssl/local/CAcert_Class_3_root.pem make install
8.返回blfs-sources目录并删除包目录
cd $LFS/sources/blfs-sources rm -rf make-ca-0.8
9.更新证书命令
/usr/sbin/make-ca -g