How to install TeXstudio 2.10.6 on Ubuntu 15.10

sudo apt-get build-dep texstudio

wget http://tenet.dl.sourceforge.net/project/texstudio/texstudio/TeXstudio%202.10.6/texstudio-2.10.6.tar.gz

tar xzvf texstudio-2.10.6.tar.gz
cd texstudio2.10.6/
./BUILD.sh

qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
make: *** No targets specified and no makefile found.  Stop.

sudo apt-get install qt-sdk
./BUILD.sh

Project ERROR: Package poppler-qt4 not found

wget http://poppler.freedesktop.org/poppler-0.40.0.tar.xz

tar xvf poppler-0.40.0.tar.xz
cd poppler-0.40.0/
./configure

configure: error: Package requirements (fontconfig >= 2.0.0) were not met:

 No package 'fontconfig' found

sudo apt-get install libfontconfig1-dev
./configure

 Warning: Using libjpeg is recommended. The internal DCT decoder is unmaintained.
  Warning: Using libopenjpeg is recommended. The internal JPX decoder is unmaintained.

sudo apt-get install libjpeg-dev libopenjpeg-dev
./configure
make
make install

Now, back to TeXstudio...

./BUILD.sh
./texstudio

./texstudio: error while loading shared libraries: libpoppler-qt4.so.4: cannot open shared object file: No such file or directory

 sudo ldconfig
./texstudio




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