#!/bin/sh
# RTLinux Configuration script file. 
# Type:
# 	rtl-config --help
# for information on how to use this script file
#
# Copyright 2000, Finite State Machines Laboratory
# Written by Edgar F. Hilton, efhilton@fsmlabs.com

# file from which to derive our information
MK_FILE=/usr/include/rtlinux/rtl.config

# the rtl-config version
VERSION=1.16

# Help message
usage ()
{
  echo
  echo "USAGE: "
  echo "	rtl-config [OPTIONS]"
  echo ""
  echo "General options:"
  echo "        --config=<path> set the path+filename to the config file to parse"
  echo "	--modules       returns the list of RTLinux modules"
  echo "        --module_dir    returns the path to where the RTLinux modules reside"
  echo "        --docs          returns path to the RTLinux docs"
  echo "	--linux	        returns the path to the linux kernel source tree"
  echo "	--prefix        returns the path to the rtlinux installation tree"
  echo "	--arch          returns the architecture for the compiled RTLinux kernel"
  echo "	--version       returns the rtl-config version"
  echo "	--rtlVersion    returns the RTLinux kernel version"
  echo "	--linuxVersion  returns the linux kernel version"
  echo "	--cc	        returns the name for the compiler"
  echo ""
  echo "Compiling options for RT development:"
  echo "	--rtinclude     paths to include files for RT programs"
  echo "	--cflags        returns the necessary C flags to compile "
  echo "	--cppflags      returns the necessary C++ flags to compile "
  echo "        --mk            returns Makefile-compatible output (rtl.mk)"
  echo ""
  echo "Compiling options for non RT development:"
  echo "	--include       returns paths to include files for nonRT programs"
  echo "	--libs          returns libraries and paths"
  echo ""
  echo "Copyright 2000, Finite State Machine Labs, Inc."
  echo "Questions? Contact Edgar F. Hilton, efhilton@fsmlabs.com"
  echo
}

clean_list ()
{
    LIST=`echo $LIST | sed -e s/"\/\/"/"\/"/g `
}

rtl_parse_list ()
{
    if [ $LIST ]; then
	clean_list
	STRING=$SEPARATOR
	TEMP_PARSE=`echo $LIST | \
		    sed -e s/:/\ $SEPARATOR/g`
	STRING=$STRING$TEMP_PARSE
    else
	STRING=""
    fi
}

# check that enough arguments were passed
if [ $# -eq 0 ]; then
    usage 1 1 
    exit 1;
fi

# Capture special options:
# 1. configure the path to the parse file
# 2. break out on special options
MY_ARGS=""
for args in $*; do
    if [ `echo $args | grep -c -e '--config='` -gt 0 ] ; then
	TEMP=`echo $@ | sed s/^.*--config\=// | sed s/\ .*$//`
	if [ ! -z "$TEMP" ] ; then
	    MK_FILE=$TEMP
	fi
    else
        if [ `echo $args | grep -c -e '--mk'` -eq 1 ] || 
           [ `echo $args | grep -c -e '--version'` -eq 1 ] || 
           [ `echo $args | grep -c -e '--help'` -eq 1 ]; then
	    MY_ARGS=$args
	    break
	else
	    MY_ARGS="$MY_ARGS $args"
	fi
    fi
done

# check to make sure that the file exists
if [ ! -f "$MK_FILE" ]; then
    echo                                       
    echo "ERROR:"
    echo "  The parse file:"
    echo "          $MK_FILE"
    echo "  was not found."
    echo 
    echo "  Is RTLinux installed?"
    echo
    exit 1
else
. $MK_FILE
fi

# Our actual engine
CALL_MYSELF_W="$0 --config=$MK_FILE"
OUTPUT_STRING=""
for ARGUMENT in $MY_ARGS; do
    STRING=""
    case "$ARGUMENT" in
	--version)
	    echo
	    echo "RTL-CONFIG version: $VERSION"
	    echo "   RTLINUX version: `$CALL_MYSELF_W --rtlVersion`"
	    echo "     LINUX version: `$CALL_MYSELF_W --linuxVersion`"
	    echo 
	    echo " Copyright (C) 2000, Finite State Machine Labs, Inc."
	    echo " Problems with script? Please contact:"
            echo "     Edgar F. Hilton <efhilton@fsmlabs.com>"
	    echo
	    exit 0
	    ;;
	--mk)
	    echo "# Generated automatically by rtl-config"
	    echo "#   RTL-CONFIG version: $VERSION"
	    echo "#      RTLINUX version: `$CALL_MYSELF_W --rtlVersion`"
	    echo "#        LINUX version: `$CALL_MYSELF_W --linuxVersion`"
	    echo "#"
	    echo "# Copyright (C) 2000, Finite State Machine Labs, Inc."
	    echo
	    echo CC = `$CALL_MYSELF_W --cc`
	    echo ARCH = `$CALL_MYSELF_W --arch`
	    echo RTL_DIR = `$CALL_MYSELF_W --prefix`
	    echo RTLINUX_DIR = `$CALL_MYSELF_W --linux`
	    echo INCLUDE = `$CALL_MYSELF_W --rtinclude`
	    echo CXXFLAGS = `$CALL_MYSELF_W --cppflags`
	    echo CFLAGS = `$CALL_MYSELF_W --cflags`
	    exit 0
	    ;;
	--help|-h)
	    usage 1 1
	    exit 0
	    ;;
	--docs)
	    LIST=$DOC_DIRS
	    SEPARATOR=""
	    rtl_parse_list
	    ;;
	--module_dir)
	    LIST=$MODULES_DIR
	    SEPARATOR=""
	    rtl_parse_list
	    ;;
	--modules)
	    TMP_DIR=`pwd`
	    LIST=$MODULES_DIR
	    clean_list
	    cd $LIST
    	    for modules in *.o
	    do
		if [ ! $modules = "lib*.a" ]; then
		    TEMP=`echo $modules | sed -e s/"\.o"$//`
		    STRING="$STRING $TEMP"
		fi
	    done
	    cd $TMP_DIR
	    ;;
	--linux)
	    LIST=$RTLINUX_DIR
	    clean_list
	    STRING=$LIST
	    ;;	
	--prefix)
	    LIST=$RTL_DIR
	    clean_list
	    STRING=$LIST
	    ;;
	--arch)
	    STRING=$ARCH
	    ;;
	--cc)
	    STRING=$CC
	    ;;
	--cflags)
	    STRING="$CFLAGS"
	    ;;
	--cppflags)
	    STRING="$CXXFLAGS"
	    ;;
	--rtinclude)
	    LIST=$INCLUDE_DIR
	    SEPARATOR="-I"
	    rtl_parse_list
	    ;;
	--include)
	    LIST=$USER_INC_DIR
	    SEPARATOR="-I"
	    rtl_parse_list
	    ;;
	--libs)
	    TMP_DIR=`pwd`
	    LIST=$LIBS_DIR         
	    SEPARATOR="-L"
	    rtl_parse_list      # parse list of directories, append -L's
	    # find all libraries within these directories
	    for libdirs in $STRING
	    do
		TEMP_LIBS_DIR=`echo $libdirs | sed -e s/^-L//`
		cd $TEMP_LIBS_DIR
		for libs in lib*.a
		do
		    if [ ! $libs = "lib*.a" ]; then
			TEMP=`echo $libs | sed -e s/^lib/-l/ -e s/"\.a"//`
			STRING="$STRING $TEMP"
		    fi
		done
	    done
	    cd $TMP_DIR
	    ;;
	--rtlVersion)
	    STRING="$RTL_VERSION_MAJOR.$RTL_VERSION_MINOR"
	    if [ $RTL_VERSION_EXTRA ]; then
	       STRING="$STRING-$RTL_VERSION_EXTRA"
	    fi
	    ;;
	--linuxVersion)
	    STRING="$LINUX_VERSION.$LINUX_PATCHLEVEL.$LINUX_SUBLEVEL"
	    if [ $LINUX_EXTRAVERSION ]; then
	       STRING="$STRING-$LINUX_EXTRAVERSION"
	    fi
	    ;;
	*)
	    usage 1 1
	    exit 1
	    ;;
    esac
    OUTPUT_STRING="$OUTPUT_STRING $STRING"
done

# Print  our necessary information
echo $OUTPUT_STRING

# Exit gracefully
exit 0