cd /path/to/qmcpack
tar xvf v3.14.0.tar.gz
cd qmcpack-3.14.0
mkdir build cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/path/to/qmcpack -DCMAKE_C_COMPILER=mpicc -DCMAKE_CXX_COMPILER=mpicxx make -j make install