#!/bin/sh
#							-*- shell-script -*-
#
# s h l i b - o p t i o n s		--  Determine the options to use
#					    for compiling with dynamic loading
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
# USA.
#
#           Author: Erick Gallesio [eg@unice.fr]
#    Creation date: 27-Jul-2000 12:21 (eg)
# Last file update: 20-Aug-2010 16:52 (eg)


#
# Utilities
#
die() {
 echo ERROR: $* 1>&2
 exit 1
}


os=`uname -s`
version=`uname -r`
machine=`uname -m`
OS=""
OS_FLAVOUR="unix"
SH_COMP_FLAGS=""
SH_LOAD_FLAGS=""
SH_LOADER=":"
SH_SUFFIX=""
SH_LIB_SUFFIX=""
SH_MAIN_LOAD_FLAGS=""

#
# Parse arguments
#


if [ "$CC" = "" ]
then
    die "CC variable not set"
fi

case $os in
  FreeBSD*)
 	  case $machine in
 	    i*86) machine=ix86;;
 	  esac
	  OS=FREEBSD
	  SH_COMP_FLAGS='-fpic'
          SH_LOAD_FLAGS='-shared -o'
          SH_LOADER='ld'
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
          SH_MAIN_LOAD_FLAGS="-rdynamic"
	  ;;
  HP*)
          OS=HPUX
     	  SH_COMP_FLAGS="+Z"
     	  SH_LOAD_FLAGS="-b -o"
     	  SH_LOADER="ld"
     	  SH_SUFFIX='sl'
          SH_LIB_SUFFIX='sl'
	  SH_MAIN_LOAD_FLAGS="-Wl,-E"
	  ;;
  IRIX*)
	  OS=IRIX;
	  if test "$CC" = "gcc"
	  then
	    SH_COMP_FLAGS="-fpic"
	  else
	    SH_COMP_FLAGS="-KPIC"
	  fi
	  SH_LOAD_FLAGS="-shared -o"
	  SH_LOADER="$CC"
	  SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
	  ;;
  Linux*)
	  case $version in
            2.0.*) version=2.0.x;;
	    2.1.*) version=2.1.x;;
	    2.2.*) version=2.2.x;;
	    2.3.*) version=2.3.x;;
	    2.4.*) version=2.4.x;;
          esac
          case $machine in
	    i*86) machine=ix86;;
	  esac
	  OS=LINUX
	  SH_COMP_FLAGS='-fpic -nostdlib'
          SH_LOAD_FLAGS='-shared -o'
          SH_LOADER='ld'
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
          SH_MAIN_LOAD_FLAGS="-rdynamic"
	  ;;
  NetBSD*)
	  OS=NETBSD
	  SH_COMP_FLAGS="-fpic"
          SH_LOAD_FLAGS="-Bshareable -o"
          SH_LOADER="ld"
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
	  ;;
  OSF*)
	  OS=OSF
	  if [ "$CC" = "gcc" ] ;then
	     SH_COMP_FLAGS="-fpic"
             SH_LOAD_FLAGS="-shared -o"
             SH_LOADER="ld"
	     SH_SUFFIX='so'
             SH_LIB_SUFFIX='so'
	   else
	     die "I do not know how to dynamically load on $os with $CC"
	   fi
	  ;;
  SunOS*)
	  case $machine in
	    sun4*) machine=sun4;;
	  esac
	  OS=SUNOS
#         SH_COMP_FLAGS="-K pic"
#	  SH_LOAD_FLAGS='-G -z text -h'
	  SH_COMP_FLAGS="-fpic"
	  SH_LOAD_FLAGS='-shared -o'
          SH_LOADER="ld"
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
	  ;;
  Darwin*)
	  OS=DARWIN;
          SH_COMP_FLAGS="-fPIC -fno-common"
	  SH_LOAD_FLAGS='-bundle -flat_namespace -undefined suppress -o'
          SH_LOADER="$CC"
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='dylib'
	  ;;
  CYGWIN*)
	  # Since I cannot figure yet how to use shared libraries in Cygwin
	  # And since they are not used yet. Just don't do it;-)
	  OS=CYGWIN;
	  OS_FLAVOUR=WIN32;
	  SH_COMP_FLAGS=
          SH_LOAD_FLAGS='-shared -o'
          SH_LOADER='true'
          SH_SUFFIX='so'
          SH_LIB_SUFFIX='so'
          SH_MAIN_LOAD_FLAGS=""
	  ;;
  *)      OS=UNKNOWN;;
esac

echo "os=\"$os\"; version=\"$version\"; machine=\"$machine\"; OS=\"$OS\"; \
OS_FLAVOUR=\"$OS_FLAVOUR\";SH_COMP_FLAGS=\"$SH_COMP_FLAGS\"; \
SH_LOAD_FLAGS=\"$SH_LOAD_FLAGS\"; \
SH_LOADER=\"$SH_LOADER\"; SH_SUFFIX=\"$SH_SUFFIX\"; \
SH_LIB_SUFFIX=\"$SH_LIB_SUFFIX\"; SH_MAIN_LOAD_FLAGS=\"$SH_MAIN_LOAD_FLAGS\""