Compile_and_install_linknx_on_QNAP

First you have to install Debian:
http://wiki.qnap.com/wiki/Debian_Installation_On_QNAP

Then, once you are logged in as root, the list of commands is:
apt-get install gcc
apt-get install g++
apt-get install make
mkdir linknx
cd linknx
wget http://downloads.sourceforge.net/sourceforge/bcusdk/pthsem_2.0.7.tar.gz
wget http://downloads.sourceforge.net/sourceforge/linknx/linknx-0.0.1.26.t...
wget http://downloads.sourceforge.net/sourceforge/bcusdk/bcusdk_0.0.4.tar.gz
tar -xzf pthsem_2.0.7.tar.gz
tar -xzf linknx-0.0.1.26.tar.gz
tar -xzf bcusdk_0.0.4.tar.gz

cd pthsem-2.0.7/
./configure
make
make test
make install
ldconfig
cd ..
cd linknx-0.0.1.26/
./configure --without-log4cpp --without-lua
make
make install
cd ..
cd bcusdk-0.0.4/
./configure --enable-onlyeibd --enable-eibnetiptunnel --enable-usb --
enable-eibnetipserver --enable-ft12
make
make install
cd ..

I didn't install libcurl, libesmtp and LUA but they should work the same way.