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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/virtualx.eclass,v 1.43 2012/10/03 22:47:12 chithanh Exp $
# @ECLASS: virtualx.eclass
# @MAINTAINER:
# x11@gentoo.org
# @AUTHOR:
# Original author: Martin Schlemmer <azarah@gentoo.org>
# @BLURB: This eclass can be used for packages that needs a working X environment to build.
# @ECLASS-VARIABLE: VIRTUALX_REQUIRED
# @DESCRIPTION:
# Variable specifying the dependency on xorg-server and xhost.
# Possible special values are "always" and "manual", which specify
# the dependency to be set unconditionaly or not at all.
# Any other value is taken as useflag desired to be in control of
# the dependency (eg. VIRTUALX_REQUIRED="kde" will add the dependency
# into "kde? ( )" and add kde into IUSE.
: ${VIRTUALX_REQUIRED:=test}
# @ECLASS-VARIABLE: VIRTUALX_DEPEND
# @DESCRIPTION:
# Dep string available for use outside of eclass, in case a more
# complicated dep is needed.
# You can specify the variable BEFORE inherit to add more dependencies.
VIRTUALX_DEPEND="${VIRTUALX_DEPEND}
!prefix? ( x11-base/xorg-server[xvfb] )
x11-apps/xhost
"
# @ECLASS-VARIABLE: VIRTUALX_COMMAND
# @DESCRIPTION:
# Command (or eclass function call) to be run in the X11 environment
# (within virtualmake function).
: ${VIRTUALX_COMMAND:="emake"}
has "${EAPI:-0}" 0 1 && die "virtualx eclass require EAPI=2 or newer."
case ${VIRTUALX_REQUIRED} in
manual)
;;
always)
DEPEND="${VIRTUALX_DEPEND}"
RDEPEND=""
;;
optional|tests)
# deprecated section YAY.
ewarn "QA: VIRTUALX_REQUIRED=optional and VIRTUALX_REQUIRED=tests are deprecated."
ewarn "QA: You can drop the variable definition completely from ebuild,"
ewarn "QA: because it is default behaviour."
if [[ -n ${VIRTUALX_USE} ]]; then
# so they like to specify the useflag
ewarn "QA: VIRTUALX_USE variable is deprecated."
ewarn "QA: Please read eclass manpage to find out how to use VIRTUALX_REQUIRED"
ewarn "QA: to achieve the same behaviour."
fi
[[ -z ${VIRTUALX_USE} ]] && VIRTUALX_USE="test"
DEPEND="${VIRTUALX_USE}? ( ${VIRTUALX_DEPEND} )"
RDEPEND=""
IUSE="${VIRTUALX_USE}"
;;
*)
DEPEND="${VIRTUALX_REQUIRED}? ( ${VIRTUALX_DEPEND} )"
RDEPEND=""
IUSE="${VIRTUALX_REQUIRED}"
;;
esac
# @FUNCTION: virtualmake
# @DESCRIPTION:
# Function which attach to running X session or start new Xvfb session
# where the VIRTUALX_COMMAND variable content gets executed.
virtualmake() {
debug-print-function ${FUNCNAME} "$@"
local i=0
local retval=0
local OLD_SANDBOX_ON="${SANDBOX_ON}"
local XVFB=$(type -p Xvfb)
local XHOST=$(type -p xhost)
local xvfbargs="-screen 0 1280x1024x24"
# backcompat for maketype
if [[ -n ${maketype} ]]; then
ewarn "QA: ebuild is exporting \$maketype=${maketype}"
ewarn "QA: Ebuild should be migrated to use VIRTUALX_COMMAND=${maketype} instead."
ewarn "QA: Setting VIRTUALX_COMMAND to \$maketype conveniently for now."
VIRTUALX_COMMAND=${maketype}
fi
# If $DISPLAY is not set, or xhost cannot connect to an X
# display, then do the Xvfb hack.
if [[ -n ${XVFB} && -n ${XHOST} ]] && \
( [[ -z ${DISPLAY} ]] || ! (${XHOST} &>/dev/null) ) ; then
debug-print "${FUNCNAME}: running Xvfb hack"
export XAUTHORITY=
# The following is derived from Mandrake's hack to allow
# compiling without the X display
einfo "Scanning for an open DISPLAY to start Xvfb ..."
# If we are in a chrooted environment, and there is already a
# X server started outside of the chroot, Xvfb will fail to start
# on the same display (most cases this is :0 ), so make sure
# Xvfb is started, else bump the display number
#
# Azarah - 5 May 2002
XDISPLAY=$(i=0; while [[ -f /tmp/.X${i}-lock ]] ; do ((i++));done; echo ${i})
debug-print "${FUNCNAME}: XDISPLAY=${XDISPLAY}"
# We really do not want SANDBOX enabled here
export SANDBOX_ON="0"
debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}"
${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null &
sleep 2
local start=${XDISPLAY}
while [[ ! -f /tmp/.X${XDISPLAY}-lock ]]; do
# Stop trying after 15 tries
if ((XDISPLAY - start > 15)) ; then
eerror "'${XVFB} :${XDISPLAY} ${xvfbargs}' returns:"
echo
${XVFB} :${XDISPLAY} ${xvfbargs}
echo
eerror "If possible, correct the above error and try your emerge again."
die "Unable to start Xvfb"
fi
((XDISPLAY++))
debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}"
${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null &
sleep 2
done
# Now enable SANDBOX again if needed.
export SANDBOX_ON="${OLD_SANDBOX_ON}"
einfo "Starting Xvfb on \$DISPLAY=${XDISPLAY} ..."
export DISPLAY=:${XDISPLAY}
# Do not break on error, but setup $retval, as we need
# to kill Xvfb
debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\""
if has "${EAPI}" 2 3; then
${VIRTUALX_COMMAND} "$@"
retval=$?
else
nonfatal ${VIRTUALX_COMMAND} "$@"
retval=$?
fi
# Now kill Xvfb
kill $(cat /tmp/.X${XDISPLAY}-lock)
else
debug-print "${FUNCNAME}: attaching to running X display"
# Normal make if we can connect to an X display
debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\""
${VIRTUALX_COMMAND} "$@"
retval=$?
fi
# die if our command failed
[[ ${retval} -ne 0 ]] && die "${FUNCNAME}: the ${VIRTUALX_COMMAND} failed."
return 0 # always return 0, it can be altered by failed kill for Xvfb
}
# @FUNCTION: Xmake
# @DESCRIPTION:
# Same as "make", but set up the Xvfb hack if needed.
# Deprecated call.
Xmake() {
debug-print-function ${FUNCNAME} "$@"
ewarn "QA: you should not execute make directly"
ewarn "QA: rather execute Xemake -j1 if you have issues with parallel make"
VIRTUALX_COMMAND="emake -j1" virtualmake "$@"
}
# @FUNCTION: Xemake
# @DESCRIPTION:
# Same as "emake", but set up the Xvfb hack if needed.
Xemake() {
debug-print-function ${FUNCNAME} "$@"
VIRTUALX_COMMAND="emake" virtualmake "$@"
}
# @FUNCTION: Xeconf
# @DESCRIPTION:
# Same as "econf", but set up the Xvfb hack if needed.
Xeconf() {
debug-print-function ${FUNCNAME} "$@"
VIRTUALX_COMMAND="econf" virtualmake "$@"
}
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