How I got wally working on Fedora 18
Install prerequisites:
sudo yum -y install qt-devel libX11 libX11-devel cmake gcc-c++
Get source from SourceForge
Extract the tarball: tar -zxvf wally-2.4.4.tar.gz
Enter the directory: cd wally-2.4.4/
Go into the build directory: cd build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_FLAGS="-lX11" ..
make
sudo make install

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