#! /bin/bash
usage()
{
    cat <<EOF
Usage: configure [OPTION]

Options:
  --prefix		 installation prefix 
  --libs		 library linking information
  --cflags		 compiler and pre-processor flags
  --version		 version information
  --debug               debug version

EOF
    exit $1
}

# default parameters list
Prefix=$PWD
echo "prefix="$Prefix
Compilator="g++"
if test $# -eq 0; then
  echo "Using default parameters"  
fi
# read the first parameter------------------------------------
    case "$1" in
    --prefix)
	echo "ask for prefix"
	;;

    --debug)
        echo "debug version"
        Debug=" -D _DEBUGS"
        ;;

    --version)
	echo "ask for version"
	;;

    --help)
	usage 0
	;;

    --cflags)
        echo "ask for cflags"
       	;;

    --libs)
       	echo "ask for libs"
       	;;
    esac
 # read the second parameter------------------------------------
 # read the third parameter------------------------------------
# ------  check the system -------------
if [ ! -x /usr/bin/g++ ]; then
     echo "g++ not found";
     exit 0;
fi;
if [ ! -x /usr/bin/make ]; then
     echo "make not found";
     exit 0;
fi;

   
# ------------------------ write in FV-config.conf ------------
echo "# Parameters directory" > FV-config.conf
echo "PREFIX="$Prefix>> FV-config.conf
#-----
echo "# Parameters compiler" >> FV-config.conf
echo "CCC"=$Compilator >>  FV-config.conf
Cflags=" -O3  -fopenmp"$Debug
IncludeDirectory=" -I "$Prefix"/include"
echo  "CFLAGS="$Cflags$IncludeDirectory>> FV-config.conf
LibDirectory=" -L"$Prefix"/lib -lFVLib"
echo  "LIBS="$LibDirectory>> FV-config.conf
#  do the FVLib-config file with correct directories
# ------------------------ write in FV-config -----------
echo "#! /bin/bash">bin/FVLib-config
echo "prefix="$Prefix>> bin/FVLib-config
cat bin/FVLib-config.in >> bin/FVLib-config
chmod \777  bin/FVLib-config
if [ ! -d "$HOME"/bin ] ; then 
       mkdir $HOME/bin; 
       export PATH=$PATH:$HOME/bin
fi;
if [ ! -f "$HOME"/bin/FVLib-config ]; then 
     ln -s $Prefix/bin/FVLib-config $HOME/bin/FVLib-config;hash;
fi;
if [ ! -f "$HOME"/bin/fvcm ]; then 
     ln -s $Prefix/bin/fvcm $HOME/bin/fvcm;hash;
fi;
if [ ! -f "$HOME"/bin/ofvcm ]; then 
     ln -s $Prefix/bin/ofvcm $HOME/bin/ofvcm;hash;
fi;
if [ ! -f "$HOME"/bin/fvcd ]; then 
     ln -s $Prefix/bin/fvcd $HOME/bin/fvcd;hash;
fi;
if [ ! -f "$HOME"/bin/deform ]; then 
     ln -s $Prefix/bin/deform $HOME/bin/deform;hash;
fi;
echo "configuration done"