configure

#!/bin/bash
################################################################################
#
# Configure scipt for Pascal-p2
#
# Sets up the complete Pascal-p2 project.
#
################################################################################

#
# Check command exists
#
# Uses the bash "command" built in.
#
function checkexists {

    command -v $1 >/dev/null
    rc=$?
    if [[ $rc != 0 ]] ; then

        echo "*** No $1 was found"

    fi

}

#
# Set default variables
#
compiler="gpc"
bits="32"
host="linux"

#
# Determine if needed programs exist. The only fatal one is grep, because we
# need that to run this script. The rest will impact the running of various
# test and build scripts.
#
checkexists grep
if [[ $rc != 0 ]] ; then

    exit 1

fi

checkexists gpc
if [[ $rc != 0 ]] ; then

    compiler=""
    # fatal this for now
    exit 1

else

    gpc -v 2> temp
    grep "gpc version 20070904" temp > /dev/null
    rc=$?
    if [[ $rc != 0 ]] ; then

        echo "*** Warning, Pascal-p2 is only validated to work with gpc version 20070904"

    fi
    grep "build=x86_64" temp > /dev/null
    rc=$?
    if [[ $rc == 0 ]] ; then

		echo "*** Pascal-p2 will only work with 32 bits"
		exit 1
        bits="64"

    fi

fi
checkexists diff
checkexists sed
checkexists rm
checkexists cp
checkexists mv
checkexists flip

if [[ $rc != 0 ]] ; then

    echo "flip does not exist, attempting to make it"
    make_flip
    checkexists flip
    flip=$rc
    if [[ $rc != 0 ]] ; then

        echo "*** Unable to make flip"

    fi

fi
checkexists ls
checkexists gzip
checkexists tar

#
# Check user arguments
#
for var in "$@"
do

    if [ $var = "--help" ]
    then

        echo "Configure program for Pascal-p2"
        echo
        echo "--gpc:       Select GPC as target compiler"
        echo "--ip_pascal: Select IP Pascal as target compiler"
        echo "--32:        Select 32 bit target"
        echo "--64:        Select 64 bit target"
        echo
        exit 0

    elif [ $var = "--gpc" ]
    then

        compiler="gpc"

    elif [ $var = "--ip_pascal" ]
    then

        compiler="ip_pascal"

    elif [ $var = "--32" ]
    then

        bits="32"

    elif [ $var = "--64" ]
    then

        bits="64"

    fi

done

if [ $compiler = "ip_pascal" ] || [ $compiler = "IP_Pascal" ]
then

   #
   # Set up for IP Pascal
   #
   echo "Set up for IP Pascal"
   cp ip_pascal/p2.bat      bin/p2.bat
   cp ip_pascal/compile.bat bin/compile.bat
   cp ip_pascal/run.bat     bin/run.bat

   cp ip_pascal/p2          bin/p2
   cp ip_pascal/compile     bin/compile
   cp ip_pascal/run         bin/run

   cp ip_pascal/Makefile    .

   cp ip_pascal/standard_tests/iso7185pat.cmp standard_tests
   cp ip_pascal/standard_tests/iso7185pats.cmp standard_tests

   #
   # IP Pascal does not care about line endings, but returning to DOS mode
   # line endings normalizes the files for SVN checkin.
   #
   #unixeol

elif [ $compiler = "gpc" ]
then

   #
   # Set up for GPC Pascal
   #
   echo "Set up for gpc"
   cp gpc/p2.bat      bin/p2.bat
   cp gpc/compile.bat bin/compile.bat
   cp gpc/run.bat     bin/run.bat


   cp gpc/p2          bin/p2
   cp gpc/compile     bin/compile
   cp gpc/run         bin/run

   cp gpc/standard_tests/iso7185pat.cmp standard_tests
   cp gpc/standard_tests/iso7185pats.cmp standard_tests

   #
   # GPC has been problematic for line endings. This changes them
   # all to Unix mode for GPC compiles, which at this moment is
   # all there is. GPC for Windows has serious problems.
   #
   #unixeol

else

   #
   # No compiler name found!
   #
   echo "*** Compiler name does not match currently implemented"
   echo "*** compilers"
   echo
   echo "IP Pascal  - use \"ip_pascal\""
   echo "GPC Pascal - use \"GPC\""

fi

echo "Configure completed!"