Obtaining source files

QE

1. clone the repository and checkout qe-6.3 (or later)

   git clone https://gitlab.com/QEF/q-e
   git checkout qe-6.3
   

or

1. download a qe-6.3 archive (or later) from the QE releases page

2. unpack the archive

   tar zxvf qe-X.Y.Z.tar.gz
   

   or, if your tar doesn’t recognize the z flag

   gunzip -c qe-X.Y.Z.tar.gz | tar xvf -
   

Environ

1. clone the Environ repository into the QE root directory

   git clone https://github.com/environ-developers/Environ.git
   

or

1. download an archive from the Environ releases page

2. unpack the archive inside the QE root directory

   tar zxvf qe-X.Y.Z.tar.gz
   

   or, if your tar doesn’t recognize the z flag

   gunzip -c qe-X.Y.Z.tar.gz | tar xvf -