#!/bin/sh

# makeSystem creates a target SYSTEM.def using the appropriate dialect template.

# Copyright (C) 2008-2023 Free Software Foundation, Inc.
# Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
#
# This file is part of GNU Modula-2.
#
# GNU Modula-2 is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with gm2; see the file COPYING.  If not, write to the Free Software
# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)


Usage () {
   echo "Usage: makesystem dialectflag SYSTEM.def SYSTEM.mod { librarypath } compiler"
}

if [ $# -lt 6 ] ; then
   Usage
   exit 1
fi

DIALECT=$1
SYSTEMDEF=$2
SYSTEMMOD=$3
shift 3
LIBRARY=""
while [ $# -gt 2 ] ; do
    if [ "$LIBRARY" = "" ] ; then
	LIBRARY=$1
    else
	LIBRARY="${LIBRARY} $1"
    fi
    shift
done
COMPILER=$1
OUTPUTFILE=$2

if [ "$COMPILER" = "" ] ; then
    echo "parameter 5 of makeSystem is incorrect, GM2_FOR_TARGET was unset"
    exit 1
fi

if [ "$DIALECT" != "-fiso" -a "$DIALECT" != "-fpim" ] ; then
   Usage
   echo "dialect must be -fiso or -fpim"
   exit 1
fi

displayExportedTypes () {
   n=1
   c=0
   for i in ${types} ; do
      if [ $n -eq 1 ] ; then
          n=0
          echo -n "                 " >> ${OUTPUTFILE}
      fi
      echo -n "$i, " >> ${OUTPUTFILE}
      if [ $c -eq 4 ] ; then
          echo " " >> ${OUTPUTFILE}
          n=1
          c=0
      fi
      c=`expr $c + 1`
   done
   echo " " >> ${OUTPUTFILE}
}

displayBuiltinTypes () {
   for i in ${types} ; do
      echo "   $i ; " >> ${OUTPUTFILE}
   done
}

displayStart () {
   sed -e "1,/@SYSTEM_DATATYPES@/!d" < ${SYSTEMDEF} | \
   sed -e "/@SYSTEM_DATATYPES@/d" >> ${OUTPUTFILE}
}

displayMiddle () {
   sed -e "1,/@SYSTEM_DATATYPES@/d" < ${SYSTEMDEF} | \
   sed -e "1,/@SYSTEM_TYPES@/!d" | \
   sed -e "/@SYSTEM_TYPES@/d" >> ${OUTPUTFILE}
}

displayEnd () {
   sed -e "1,/@SYSTEM_TYPES@/d" < ${SYSTEMDEF} >> ${OUTPUTFILE}
}

MINIMAL="-fno-scaffold-main -fno-scaffold-dynamic -fno-scaffold-static -fno-m2-plugin"

rm -f ${OUTPUTFILE}
if ${COMPILER} ${DIALECT} ${LIBRARY} ${MINIMAL} \
	       -c -fdump-system-exports ${SYSTEMMOD} -o /dev/null 2>&1 > /dev/null ; then
    types=`${COMPILER} ${DIALECT} ${LIBRARY} ${MINIMAL} -fno-m2-plugin -c -fdump-system-exports ${SYSTEMMOD} -o /dev/null | cut -f5 -d' '`
    touch ${OUTPUTFILE}
    displayStart
    displayExportedTypes
    displayMiddle
    displayBuiltinTypes
    displayEnd
else
    ${COMPILER} ${DIALECT} ${LIBRARY} ${MINIMAL} \
		-c -fdump-system-exports ${SYSTEMMOD} -o /dev/null
    exit $?
fi