# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2

S=${WORKDIR}/`echo ${A} | sed -e 's/\.tar\.gz//g'`

DESCRIPTION="Improved cluster resource manager and queuing system based on OpenPBS"
HOMEPAGE="http://www.supercluster.org/torque/"
SRC_URI="http://supercluster.org/downloads/torque/torque-1.1.0p5.tar.gz"
LICENSE="openpbs"

SLOT="0"
KEYWORDS="x86 amd64"
IUSE="X tcltk debug"

DEPEND="virtual/libc
		X? ( virtual/x11 )
		tcltk? ( dev-lang/tk )"
		
RDEPEND="net-misc/openssh"

src_unpack() {
	cd ${WORKDIR}
	unpack ${A}
	cd ${S}
	# this thing doesn't use make install, but rather it's own install script
	# fix it here so the install dirs are set to the ${D} directory
	cd buildutils
	mv pbs_mkdirs.in pbs_mkdirs.in-orig
	sed -e "s|prefix=@prefix@|prefix=\${D}@prefix@| ; \
		s|PBS_SERVER_HOME=@PBS_SERVER_HOME@|PBS_SERVER_HOME=\${D}@PBS_SERVER_HOME@| ; \
		s|PBS_DEFAULT_FILE=@PBS_DEFAULT_FILE@|PBS_DEFAULT_FILE=\${D}@PBS_DEFAULT_FILE@| ; \
		s|PBS_ENVIRON=@PBS_ENVIRON@|PBS_ENVIRON=\${D}@PBS_ENVIRON@|" \
			pbs_mkdirs.in-orig > pbs_mkdirs.in
}

src_compile() {
	local myconf
    
	# set default parameters
	myconf="--prefix=/usr"
	myconf="${myconf} --mandir=/usr/share/man"
    myconf="${myconf} --enable-docs"
	myconf="${myconf} --enable-server"
	myconf="${myconf} --enable-mom"
	myconf="${myconf} --enable-clients"
	myconf="${myconf} --enable-syslog"
	myconf="${myconf} --set-server-home=/usr/spool/PBS"
	myconf="${myconf} --set-environ=/etc/pbs_environment"

	
	if use X && use tcltk
	then
      myconf="${myconf} --enable-gui"
	else
	  myconf="${myconf} --disable-gui"
	fi
			
	use tcltk && myconf="${myconf} --with-tcl --enable-tcl-qstat"
	use debug && myconf="${myconf} --enable-debug"
    
	./configure ${myconf} || die "./configure failed"

	# compile
	emake || die "emake failed"
}

src_install() {
	make prefix=${D}/usr \
		 mandir=${D}/usr/share/man \
		 PBS_SERVER_HOME=${D}/usr/spool/PBS \
	     install || die

    dodoc INSTALL PBS_License.txt README.torque Release_Notes CHANGELOG
	exeinto /etc/init.d ; newexe ${FILESDIR}/pbs.rc pbs
}

pkg_postinst() {
    # Since we introduced changes in installation, gui version doesn't 
	# work properly, since "make install" puts bad paths in certain files
	# This affects xpbs & xpbsmon functioning.
	
	# only perform this if GUI was enabled during installation
    if use X && use tcltk
	then
	    # xpbs - remove wrong paths from related files
    	sed -e "s|${D}||g" /usr/bin/xpbs > /usr/bin/xpbs.new
	    mv /usr/bin/xpbs.new /usr/bin/xpbs
    	cd /usr/lib/xpbs && rm tclIndex && ./buildindex /usr/lib/xpbs

		# xpbsmon - remove wrong paths from related files
    	sed -e "s|${D}||g" /usr/bin/xpbsmon > /usr/bin/xpbsmon.new
    	mv /usr/bin/xpbsmon.new /usr/bin/xpbsmon
    	cd /usr/lib/xpbsmon && rm tclIndex && ./buildindex /usr/lib/xpbsmon

		# change permissions
		chmod 755 /usr/bin/xpbs*
	fi

    # solve missing folders problem (service will not start without them)
	if [ ! -e /usr/spool/PBS/spool ]; then
        mkdir /usr/spool/PBS/spool
  	fi
	if [ ! -e /usr/spool/PBS/mom_priv/jobs ]; then
        mkdir /usr/spool/PBS/mom_priv/jobs
  	fi

    # print some info on the screen
	einfo
    einfo "####################################################################"
    einfo " 1. configuring torque as server:"
    einfo "    - edit \"/usr/spool/PBS/server_name\" and put name of the"
    einfo "      PBS server (if local host is not the server)"
	einfo "    - edit \"/usr/spool/PBS/server_priv/nodes\" and put names of"
	einfo "      the nodes"
    einfo
	einfo " 2. configuring torque as client (node):"
	einfo "    - edit \"/usr/spool/PBS/mom_priv/config\" and set \"\$clienthost\""
	einfo "      variable"
	einfo
    einfo " 3. running torque:"
    einfo "    - use \"/etc/init.d/pbs\" script to start/stop"
    einfo "      (i.e. add it to default runlevel \"rc-update add pbs default\")"
    einfo
    einfo "NOTE: for handling of MPI jobs, torque perform best with "
    einfo "       \"sys-cluster/mpich\" and \"sys-cluster/mpiexec\""
    einfo "   (instead of starting MPI jobs with mpirun, you use mpiexec)"
    einfo "####################################################################"
	einfo "check documentation: http://www.clusterresources.com/products/torque"
	einfo "####################################################################"
	einfo
}