安装编译环境

yum groupinstall "Development Tools"

编译strongswan

1. Download strongSwan:

   wget https://download.strongswan.org/strongswan-x.x.x.tar.bz2

2. Unpack the tarball and navigate into the directory:

   tar xjf strongswan-x.x.x.tar.bz2; cd strongswan-x.x.x

3. Configure strongSwan using the available options:

   ./configure --prefix=/usr --sysconfdir=/etc --<your-options>

4. Build the sources and install the binaries as root:

   make
   sudo make install

执行./configure报错

编译安装gmp

gmp下载The GNU MP Bignum Library

https://gmplib.org/download/gmp/gmp-6.2.1.tar.xz

解压

 xz -d gmp-6.2.1.tar.xz

tar -xvf gmp-6.2.1.tar

编译安装
cd gmp-6.2.1
./configure
make
make install

参考

https://docs.strongswan.org/docs/5.9/install/install.html

The GNU MP Bignum Library