#! /bin/sh
#
#   @configure_input@
#
#   Script that outputs GNUstep filesystem configuration; can
#   be used by non-gnustep-make building/config systems to know
#   how GNUstep is configured on this machine
#
#   Copyright (C) 2007 Free Software Foundation, Inc.
#
#   Author: Nicola Pero <nicola.pero@meta-innovation.com>
#
#   This file is part of the GNUstep Makefile Package.
#
#   This library 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
#   of the License, or (at your option) any later version.
#   
#   You should have received a copy of the GNU General Public
#   License along with this library; see the file COPYING.
#   If not, write to the Free Software Foundation,
#   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#

# Check that we are given a valid option.
if [ -z "$1" ]; then
  echo "usage: gnustep-config argument"
  echo "gnustep-config --help for more help"
  exit 1
fi

case "$1" in
  --variable=*)  ;;
  --help)       ;;
  --objc-flags) ;;
  --objc-libs)  ;;
  --base-libs)  ;;
  --gui-libs)   ;;
  *)
    # An unrecognized option
    echo "Unrecognized option: $1"
    echo "usage: gnustep-config argument"
    echo "gnustep-config --help for more help"
    exit 1;;
esac


# Process --help
if [ "$1" = "--help" ]; then
    echo "usage: gnustep-config [option]"
    echo
    echo "This program prints information on the current gnustep"
    echo "installation.  [option] determines what is printed.  Here"
    echo "is the list of options:"
    echo
    echo "--variable=xxx: prints the value of the specified"
    echo "                variable.  Here is a list of possible"
    echo "                variables:"
    echo
    echo "    --variable=GNUSTEP_MAKEFILES"
    echo "    --variable=GNUSTEP_USER_DIR"
    echo "    --variable=GNUSTEP_USER_DEFAULTS_DIR"
    echo "    --variable=GNUSTEP_HOST"
    echo "    --variable=GNUSTEP_HOST_CPU"
    echo "    --variable=GNUSTEP_HOST_VENDOR"
    echo "    --variable=GNUSTEP_HOST_OS"
    echo "    --variable=GNUSTEP_IS_FLATTENED"
    echo "    --variable=GNUSTEP_xxx_APPS"
    echo "    --variable=GNUSTEP_xxx_TOOLS"
    echo "    --variable=GNUSTEP_xxx_LIBRARY"
    echo "    --variable=GNUSTEP_xxx_HEADERS"
    echo "    --variable=GNUSTEP_xxx_LIBRARIES"
    echo "    --variable=GNUSTEP_xxx_DOC"
    echo "    --variable=GNUSTEP_xxx_DOC_MAN"
    echo "    --variable=GNUSTEP_xxx_DOC_INFO"
    echo "    where 'xxx' could be any of 'SYSTEM', 'NETWORK', 'LOCAL' and 'USER'."
    echo
    echo "    For example, you could get the value of GNUSTEP_SYSTEM_TOOLS to find"
    echo "    where command-line system programs are located on this system."
    echo
    echo "--objc-flags: prints all the flags required to compile an ObjC file"
    echo
    echo "--objc-libs: prints all the flags required to link a pure ObjC program (no foundation/gui)"
    echo
    echo "--base-libs: prints all the flags required to link a command-line ObjC program (no gui)"
    echo
    echo "--gui-libs: prints all the flags required to link a GUI ObjC program"
    echo 
    exit 0
fi

# Any other option requires determining the config first.

#
# Important - keep the following in sync with GNUstep.sh.in
#

#
# Read our configuration files.  We only do that to locate
# GNUSTEP_MAKEFILES, so that we can execute GNUstep.sh and
# access any variable that we might ever need.
#

# Determine the location of the system configuration file
if [ -z "$GNUSTEP_CONFIG_FILE" ]; then
  GNUSTEP_CONFIG_FILE=@GNUSTEP_CONFIG_FILE@
fi

# Determine the location of the user configuration file
if [ -z "$GNUSTEP_USER_CONFIG_FILE" ]; then
  GNUSTEP_USER_CONFIG_FILE=@GNUSTEP_USER_CONFIG_FILE@
fi

# Read the system configuration file
if [ -f "$GNUSTEP_CONFIG_FILE" ]; then
  . "$GNUSTEP_CONFIG_FILE"
fi

# FIXME: determining GNUSTEP_HOME
GNUSTEP_HOME=~

# Read the user configuration file ... unless it is disabled (ie, set
# to an empty string)
if [ -n "$GNUSTEP_USER_CONFIG_FILE" ]; then
  case "$GNUSTEP_USER_CONFIG_FILE" in 
    /*) # An absolute path
        if [ -f "$GNUSTEP_USER_CONFIG_FILE" ]; then
          . "$GNUSTEP_USER_CONFIG_FILE"
        fi;;
     *) # Something else
        if [ -f "$GNUSTEP_HOME/$GNUSTEP_USER_CONFIG_FILE" ]; then
          . "$GNUSTEP_HOME/$GNUSTEP_USER_CONFIG_FILE"
        fi;;
  esac
fi

if [ -z "$GNUSTEP_MAKEFILES" ]; then
  GNUSTEP_MAKEFILES=@GNUSTEP_MAKEFILES@
fi

export GNUSTEP_MAKEFILES

#
# If all they want to know if GNUSTEP_MAKEFILES or anything that
# we can compute only using GNUSTEP_MAKEFILES, we can print it out
#
case "$1" in
  --variable=GNUSTEP_MAKEFILES) echo "$GNUSTEP_MAKEFILES"
                     exit 0;;
  --objc-flags) @GNUMAKE@ -f "$GNUSTEP_MAKEFILES/empty.make" print-gnustep-make-objc-flags quiet=yes 2>/dev/null
                     exit 0;;
  --objc-libs) @GNUMAKE@ -f "$GNUSTEP_MAKEFILES/empty.make" print-gnustep-make-objc-libs quiet=yes 2>/dev/null
                     exit 0;;
  --base-libs) @GNUMAKE@ -f "$GNUSTEP_MAKEFILES/empty.make" print-gnustep-make-base-libs quiet=yes 2>/dev/null
                     exit 0;;
  --gui-libs) @GNUMAKE@ -f "$GNUSTEP_MAKEFILES/empty.make" print-gnustep-make-gui-libs quiet=yes 2>/dev/null
                     exit 0;;
esac

#
# Else, now read all the standard GNUstep config
#
GNUSTEP_SH_EXPORT_ALL_VARIABLES=yes
. $GNUSTEP_MAKEFILES/GNUstep.sh
unset GNUSTEP_SH_EXPORT_ALL_VARIABLES

#
# Now print whatever variable they asked for
#
gs_variable_name=`echo "$1" | sed -e 's/--variable=//'`
gs_variable_value=$(eval echo "\$$gs_variable_name")

if [ "$gs_variable_value" != "" ]; then
  echo "$gs_variable_value"
fi