#!/bin/sh
#
# This script creates a CGAL makefile with entries for all .C files in the
# current directory.
#
# Usage: create_makefile [-options]
#
# -d   create a default CGAL makefile
# -t   create a makefile for the test suite
# -w   create a makefile with flags for LEDA windows

#VERSION=2.0

header()
{
  echo "#---------------------------------------------------------------------#"
  echo "#                    $1"
  echo "#---------------------------------------------------------------------#"
}

create_makefile_entry()
{
  echo "$1\$(EXE_EXT): $1\$(OBJ_EXT)"
  echo "	\$(CGAL_CXX) \$(LIBPATH) \$(EXE_OPT)$1 $1\$(OBJ_EXT) \$(LDFLAGS)"
  echo
}

create_makefile()
{
  echo "# Created by the script create_makefile"
  echo "# This is the makefile for compiling a CGAL application."
  echo
  header "include platform specific settings"
  echo    "# Choose the right include file from the <cgalroot>/make directory."
  echo
  echo    "# CGAL_MAKEFILE = ENTER_YOUR_INCLUDE_MAKEFILE_HERE"
  echo    "include \$(CGAL_MAKEFILE)"
  echo
  header "compiler flags"
  echo
  echo    "CXXFLAGS = \\"
  if [ ! -z "$TESTSUITE" ] ; then
    echo    "           \$(TESTSUITE_CXXFLAGS) \\"
    echo    "           \$(EXTRA_FLAGS) \\"
  fi
  if [ -d include ] ; then
    echo  "           -Iinclude \\"
  fi
  echo    "           \$(CGAL_CXXFLAGS) \\"
  echo    "           \$(LONG_NAME_PROBLEM_CXXFLAGS) \\"
  echo    "           \$(DEBUG_OPT)"
  echo
  header "linker flags"
  echo
  echo    "LIBPATH = \\"
  if [ ! -z "$TESTSUITE" ] ; then
    echo    "          \$(TESTSUITE_LIBPATH) \\"
  fi
  if [ -z "$LEDAWINDOWS" ] ; then
    echo    "          \$(CGAL_LIBPATH)"
  else
    echo    "          \$(CGAL_WINDOW_LIBPATH)"
  fi
  echo
  echo    "LDFLAGS = \\"
  if [ ! -z "$TESTSUITE" ] ; then
    echo    "          \$(TESTSUITE_LDFLAGS) \\"
  fi
  echo    "          \$(LONG_NAME_PROBLEM_LDFLAGS) \\"
  if [ -n "$GEOWIN" ] ; then
    echo    "          \$(CGAL_GEOWIN_LDFLAGS)"
  elif [ -z "$LEDAWINDOWS" ] ; then
    echo    "          \$(CGAL_LDFLAGS)"
  else
    echo    "          \$(CGAL_WINDOW_LDFLAGS)"
  fi
  echo
  header "target entries"
  echo
  printf "all:            "
  for file in `ls *.C` ; do
      printf "\\\\\n                `basename $file .C`\$(EXE_EXT) "
  done
  echo
  echo
  for file in `ls *.C` ; do
    base=`basename $file .C`
    create_makefile_entry $base
  done
#  echo clean:
#  printf    "	rm -f *\$(OBJ_EXT) "
#  for file in `ls *.C` ; do
#      printf "\\\\\n                   `basename $file .C`\$(EXE_EXT) "
#  done
#  printf    "\\\\\n                   core\n\n"
  printf "clean: "
  for file in `ls *.C` ; do
      printf "\\\\\n                   `basename $file .C`.clean "
  done
  printf    "\n\n"
  header "suffix rules"
  echo
  echo    ".C\$(OBJ_EXT):"
  echo    "	\$(CGAL_CXX) \$(CXXFLAGS) \$(OBJ_OPT) \$<"
  echo
}

case $# in
  0) echo "Usage: create_makefile [-options]"
     echo
     echo "-d   create a default CGAL makefile"
     echo "-t   create a makefile for the test suite"
     echo "-w   create a makefile with flags for LEDA windows"
     echo "-g   create a makefile with flags for GEOWIN"
     exit
esac

for i do
  case $i in
    -t) TESTSUITE='y';;
    -w) LEDAWINDOWS='y';;
    -g) GEOWIN='y';;
  esac
done

if [ -f makefile ] ; then
  echo "moving makefile to makefile.bak ..."
  mv -f makefile makefile.bak
fi
create_makefile > makefile
echo "created makefile ..."