# Copyright 1999-2002 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License, v2 or later
# Author: Martin Schlemmer <azarah@gentoo.org>
# $Header: /var/cvsroot/gentoo-x86/eclass/virtualx.eclass,v 1.4 2002/05/05 16:47:04 azarah Exp $
# This eclass can be used for packages that needs a working X environment to build
ECLASS=virtualx
newdepend virtual/x11

DESCRIPTION="Based on the $ECLASS eclass"

virtualmake() {
	local retval=0

	#If $DISPLAY is not set, or xhost cannot connect to an X
	#display, then do the Xvfb hack.
	if [ -z "$DISPLAY" ] || ! /usr/X11R6/bin/xhost
	then
		export XAUTHORITY=
		# The following is derived from Mandrake's hack to allow
		# compiling without the X display

		# Only start at :1, as the default display is usually :0,
		# and Xvfb cannot start if X is already running. This
		# is mainly to fix chroot issues where this wont detect
		# a running X, as we dont have /tmp mounted (--bind) in
		# the chroot.  (Azarah - 5 May 2002)
		local i=1
		XDISPLAY=$(i=1; while [ -f /tmp/.X${i}-lock ] ; do i=$((${i}+1));done; echo ${i})
		/usr/X11R6/bin/Xvfb :${XDISPLAY} -screen 0 800x600x32 &>/dev/null &
		
		export DISPLAY=:${XDISPLAY}
		#Do not break on error, but setup $retval, as we need
		#to kill Xvfb
		${maketype} $*
		retval=$?

		#Now kill Xvfb
		kill $(cat /tmp/.X${XDISPLAY}-lock)
	else
		#Normal make if we can connect to an X display
		${maketype} $*
		retval=$?
	fi
	return $retval
}

#Same as "make", but setup the Xvfb hack if needed
Xmake() {
	export maketype="make"
	virtualmake "$*"
}

#Same as "emake", but setup the Xvfb hack if needed
Xemake() {
	export maketype="emake"
	virtualmake "$*"
}