#!/bin/sh
#
# This script is an automatic configuration file for configuring the makefiles
# in this directory for a particular architecture
#
# Usage:  configure <arch>
#
# where <arch> is one of the configuration files in directory config/.
#

##########  Try to auto detect architecture ##########

MACHID=`bin/machid`

if [ "${MACHID}" = "ibmrs6000" ] ; then
	if [ -d /usr/lpp/ppe.poe ] ; then
		# user has parallel environment
		MACHID="${MACHID}poe" ;
	fi
elif [ "${MACHID}" = "sunsparcsolaris" ] ; then
	if [ -d /opt/SUNWhpc ] ; then
		# user has hpc environment
		MACHID="${MACHID}hpc" ;
	elif [ -x `which mpirun` -a -x `which g++` ] ; then
		# user has g++ and mpich environment
		MACHID="${MACHID}g++mpich" ;
	fi
fi


##########  Try to set ARCHITECTURE ##########

ARCHITECTURE=""

if [ -n "$1" ] ; then
	if [ -f config/${1} ] ; then
		ARCHITECTURE=$1 ;
		echo "found ${ARCHITECTURE}" ;
	else
		echo "ERROR.  config/${1} not found" ;
		echo "" ;
	fi
else
	if [ "${MACHID}" = "smells like origin 2000" ] ; then
		ARCHITECTURE="o2000-CC" ;
	elif [ "${MACHID}" = "ibmrs6000poe" ] ; then
		ARCHITECTURE="sp2-xlC" ;
	elif [ "${MACHID}" = "sunsparcsolarishpc" ] ; then
		ARCHITECTURE="sun4-CC-sunhpc" ;
	elif [ "${MACHID}" = "sunsparcsolarisg++mpich" ] ; then
		ARCHITECTURE="sun4-g++-mpich" ;
	elif [ "${MACHID}" = "smells like linux with g++ and mpich" ] ; then
		ARCHITECTURE="x86-g++-linux" ;
	else
		echo "" ;
		echo "WARNING." ;
		echo "Unknown machine type" ;
		echo "	${MACHID}" ;
		uname -a ;
		echo "Please report to KeLP developers." ;
	fi
	if [ -n "${ARCHITECTURE}" ] ; then
		echo "Auto-detected ${ARCHITECTURE}" ;
	fi
fi

##########  Try to avoid pilot errors ##########

if [ -h arch ] ; then
	CURRENT=`ls -l arch | awk '{print $NF}' | awk -F'/' '{print $NF}'` ;
	if [ "${ARCHITECTURE}" = "${CURRENT}" ] ; then
		echo "? Configuration is already set to ${CURRENT}" ;
		exit 0 ;
	else
		echo "" ;
		echo "ERROR." ;
		echo "Configuration is already set to" ;
		echo "     $CURRENT" ;
		echo "Execute" ;
		echo "     % gmake clean" ;
		echo "before changing configuration" ;
		echo "" ;
		exit 1 ;
	fi
fi

##########  Try to set arch ##########

if [ -z "${ARCHITECTURE}" ] ; then
	echo
	echo "Possible architecture types"
	echo "---------------------------"
	(cd config; echo * | xargs -n1 )
	echo
	exit 1 ;
else
	rm -f arch
	ln -s config/$ARCHITECTURE arch
	exit 0 ;
fi