problem of coupling Palabos and LIGGGHTS

I got a problem when I'm trying to couple Palabos and LIGGGHTS as shown below.

scons: Building targets ...
mpicxx -o showcaseRectChannel -Wl,--whole-archive lmp_fedora -Wl,--no-whole-archive showcaseRectChannel.o /home/jian/Documents/LBDEMcoupling-public/src/liggghtsCouplingWrapper.o /home/jian/Documents/LBDEMcoupling-public/src/latticeDecomposition.o /home/jian/Documents/palabos/lib/libplb_mpi.a -L/home/jian/Documents/liggghts/src -llmp_fedora

g++: error: lmp_fedora: No such file or directory
scons: *** [showcaseRectChannel] Error 1
scons: building terminated because of errors.
make: *** [compile] Error 2

I have add the environment varables:

alias liggghts=/home/jian/Documents/liggghts/src/lmp_fedora
alias lpp="python $HOME/LPP/src/lpp.py"

export PALABOS_ROOT=/home/jian/Documents/palabos
export LIGGGHTS_ROOT=/home/jian/Documents/liggghts
export LBDEM_ROOT=/home/jian/Documents/LBDEMcoupling-public

export PYTHONPATH=/home/jian/Documents/liggghts/python
export LD_LIBRARY_PATH=/home/jian/Documents/liggghts/src

and I have the file lmp_fedora in that folder.

Could someone tell me what's wrong?