yum install -y git
yum groupinstall -y "Development Tools"
yum install -y qt5-qtbase-devel qt5-qttools-devel qt5-qtbase-mysql qt5-qtbase-postgresql qt5-linguist
yum install -y openssl-devel libtool-ltdl-devel
export CXXFLAGS=-std=c++11
export PATH="/usr/lib64/qt5/bin/:$PATH"
git clone https://github.com/chris2511/xca.git
cd xca
./bootstrap
make
make install
For any one coming for CentOS 8 it work too, thanks for your efforts.