Compiling Quantum GIS on Debian Squeeze

Downloaded 1.4.0 source from svn trunk:
svn co https://svn.osgeo.org/qgis/trunk/qgis /home/prea/src/qgis

Just read the INSTALL file: to compile "à la Debian":
dpkg-buildpackage -us -us -b

Last, as root do:
dpkg -i qgis_1.4.0_i386.deb libqgis1.4.0_1.4.0_i386.deb qgis-common_1.4.0_all.deb qgis-plugin-grass_1.4.0_i386.deb qgis-plugin-grass-common_1.4.0_all.deb

Whoa.