Hey guys, I'm running ubuntu gutsy and the latest version of qjackctl in the repo is version 0.2.2. The latest release is 0.3.2 and I'm looking to get the latest jack too so I'm upgrading everything. Anyways, the requirements to compile Qjackctl are g++ , qt4-core (libqt4-core 4.3 package in repo), qt4-gui (libqt4-gui in repo) and qt4-xml (which apparently is a module included in libqt4-core). So, apparently, I've downloaded all the reqs but when I run ./configure, I get this error checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking how to run the C preprocessor... gcc -E checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking how to run the C++ preprocessor... g++ -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking whether gcc needs -traditional... no checking for Qt library version >= 4.1... no; Qt 4.1 or greater is required Anybody know how I can fix this? I'm worried about installing the latest version of Jackd if I can't control it via qjackctl