[a_habib]

Hello All.
I'm using OF 4.x on ubuntu 16.04 LTS for the first time (I was using OF 2.3.0 on 14.04 for a long time)
When I tried to use the scotch decomposition method I got this message

Decomposing mesh region0

Create mesh

Calculating distribution of cells
Selecting decompositionMethod scotch


--> FOAM FATAL ERROR: 
You are trying to use scotch but do not have the scotchDecomp library loaded.
This message is from the dummy scotchDecomp stub library instead.

Please install scotch and make sure that libscotch.so is in your LD_LIBRARY_PATH.
The scotchDecomp library can then be built in $FOAM_SRC/parallel/decompose/decompositionMethods/scotchDecomp


    From function virtual Foam::labelList Foam::scotchDecomp::decompose(const Foam::polyMesh&, const pointField&, const scalarField&)
    in file dummyScotchDecomp.C at line 97.

FOAM exiting

why I don't have scotch ?
My $LD_LIBRARY_PATH is

bash: /home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48/qt-4.7.3/lib/:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48/gperftools-svn/lib:/home/a-habib/OpenFOAM/OpenFOAM-4.x/platforms/linux64Gcc48DPInt32Opt/lib/openmpi-1.6.5:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48DPInt32/lib/openmpi-1.6.5:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48/openmpi-1.6.5/lib:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48/openmpi-1.6.5/lib64:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64/mpc-1.0.1/lib64:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64/mpfr-3.1.2/lib64:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64/gmp-5.1.2/lib64:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64/gcc-4.8.4/lib64:/home/a-habib/OpenFOAM/a-habib-4.x/platforms/linux64Gcc48DPInt32Opt/lib:/home/a-habib/OpenFOAM/site/4.x/platforms/linux64Gcc48DPInt32Opt/lib:/home/a-habib/OpenFOAM/OpenFOAM-4.x/platforms/linux64Gcc48DPInt32Opt/lib:/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64Gcc48DPInt32/lib:/home/a-habib/OpenFOAM/OpenFOAM-4.x/platforms/linux64Gcc48DPInt32Opt/lib/dummy: No such file or directory

I tried to locate libscotch.so and I had this

/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64GccDPInt32Opt/lib/libscotch.so
/home/a-habib/OpenFOAM/ThirdParty-4.x/platforms/linux64GccDPInt32Opt/lib/openmpi-1.6.5/libscotch.so

How I can solve this ?

Thanks All