I do have libpoppler-qt5-1: dpkg -l libpoppler-qt5-1 ii libpoppler-qt5-1:amd6 0.26.5-2+deb8u1 and libpoppler-qt5.so.1: /usr/lib/x86_64-linux-gnu/libpoppler-qt5.so.1
The command to build the package. I first went with: apt-get -b source libpoppler64=0.48.0-2 but also tried: dpkg-buildpackage -rfakeroot -uc -b