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# Copyright 1999-2010 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/eclass/virtualx.eclass,v 1.35 2010/05/15 05:40:46 dirtyepic Exp $
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# Original author: Martin Schlemmer <azarah@gentoo.org>
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# @ECLASS: virtualx.eclass
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# @MAINTAINER:
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# x11@gentoo.org
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# @BLURB: This eclass can be used for packages that needs a working X environment to build.
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# @ECLASS-VARIABLE: VIRTUALX_REQUIRED
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# @DESCRIPTION:
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# Variable specifying the dependency on xorg-server and xhost.
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# Possible special values are "always" and "manual", which specify
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# the dependency to be set unconditionaly or not at all.
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# Any other value is taken as useflag desired to be in control of
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# the dependency (eg. VIRTUALX_REQUIRED="kde" will add the dependency
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# into "kde? ( )" and add kde into IUSE.
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: ${VIRTUALX_REQUIRED:=test}
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# @ECLASS-VARIABLE: VIRTUALX_DEPEND
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# @DESCRIPTION:
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# Dep string available for use outside of eclass, in case a more
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# complicated dep is needed.
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# You can specify the variable BEFORE inherit to add more dependencies.
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VIRTUALX_DEPEND="${VIRTUALX_DEPEND}
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!prefix? ( x11-base/xorg-server[-minimal] )
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x11-apps/xhost
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"
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# @ECLASS-VARIABLE: VIRTUALX_COMMAND
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# @DESCRIPTION:
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# Command (or eclass function call) to be run in the X11 environment
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# (within virtualmake function).
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: ${VIRTUALX_COMMAND:="emake"}
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has "${EAPI:-0}" 0 1 && die "virtualx eclass require EAPI=2 or newer."
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case ${VIRTUALX_REQUIRED} in
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manual)
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;;
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always)
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DEPEND="${VIRTUALX_DEPEND}"
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RDEPEND=""
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;;
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optional|tests)
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# deprecated section YAY.
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ewarn "QA: VIRTUALX_REQUIRED=optional and VIRTUALX_REQUIRED=tests are deprecated."
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ewarn "QA: You can drop the variable definition completely from ebuild,"
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ewarn "QA: because it is default behaviour."
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if [[ -n ${VIRTUALX_USE} ]]; then
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# so they like to specify the useflag
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ewarn "QA: VIRTUALX_USE variable is deprecated."
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ewarn "QA: Please read eclass manpage to find out how to use VIRTUALX_REQUIRED"
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ewarn "QA: to achieve the same behaviour."
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fi
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[[ -z ${VIRTUALX_USE} ]] && VIRTUALX_USE="test"
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DEPEND="${VIRTUALX_USE}? ( ${VIRTUALX_DEPEND} )"
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RDEPEND=""
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IUSE="${VIRTUALX_USE}"
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;;
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*)
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DEPEND="${VIRTUALX_REQUIRED}? ( ${VIRTUALX_DEPEND} )"
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RDEPEND=""
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IUSE="${VIRTUALX_REQUIRED}"
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;;
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esac
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# @FUNCTION: virtualmake
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# @DESCRIPTION:
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# Function which attach to running X session or start new Xvfb session
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# where the VIRTUALX_COMMAND variable content gets executed.
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virtualmake() {
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debug-print-function ${FUNCNAME} "$@"
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local i=0
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local retval=0
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local OLD_SANDBOX_ON="${SANDBOX_ON}"
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local XVFB=$(type -p Xvfb)
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local XHOST=$(type -p xhost)
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local xvfbargs="-screen 0 800x600x24"
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# backcompat for maketype
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if [[ -n ${maketype} ]]; then
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ewarn "QA: ebuild is exporting \$maketype=${maketype}"
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ewarn "QA: Ebuild should be migrated to use VIRTUALX_COMMAND=${maketype} instead."
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ewarn "QA: Setting VIRTUALX_COMMAND to \$maketype conveniently for now."
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VIRTUALX_COMMAND=${maketype}
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fi
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# If $DISPLAY is not set, or xhost cannot connect to an X
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# display, then do the Xvfb hack.
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if [[ -n ${XVFB} && -n ${XHOST} ]] && \
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( [[ -z ${DISPLAY} ]] || ! (${XHOST} &>/dev/null) ) ; then
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debug-print "${FUNCNAME}: running Xvfb hack"
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export XAUTHORITY=
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# The following is derived from Mandrake's hack to allow
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# compiling without the X display
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einfo "Scanning for an open DISPLAY to start Xvfb ..."
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# If we are in a chrooted environment, and there is already a
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# X server started outside of the chroot, Xvfb will fail to start
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# on the same display (most cases this is :0 ), so make sure
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# Xvfb is started, else bump the display number
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#
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# Azarah - 5 May 2002
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XDISPLAY=$(i=0; while [[ -f /tmp/.X${i}-lock ]] ; do ((i++));done; echo ${i})
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debug-print "${FUNCNAME}: XDISPLAY=${XDISPLAY}"
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# We really do not want SANDBOX enabled here
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export SANDBOX_ON="0"
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debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}"
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${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null &
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sleep 2
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local start=${XDISPLAY}
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while [[ ! -f /tmp/.X${XDISPLAY}-lock ]]; do
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# Stop trying after 15 tries
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if ((XDISPLAY - start > 15)) ; then
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eerror "'${XVFB} :${XDISPLAY} ${xvfbargs}' returns:"
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echo
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${XVFB} :${XDISPLAY} ${xvfbargs}
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echo
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eerror "If possible, correct the above error and try your emerge again."
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die "Unable to start Xvfb"
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fi
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((XDISPLAY++))
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debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}"
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${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null &
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sleep 2
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done
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# Now enable SANDBOX again if needed.
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export SANDBOX_ON="${OLD_SANDBOX_ON}"
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einfo "Starting Xvfb on \$DISPLAY=${XDISPLAY} ..."
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export DISPLAY=:${XDISPLAY}
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# Do not break on error, but setup $retval, as we need
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# to kill Xvfb
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debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\""
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${VIRTUALX_COMMAND} "$@"
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retval=$?
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# Now kill Xvfb
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kill $(cat /tmp/.X${XDISPLAY}-lock)
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else
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debug-print "${FUNCNAME}: attaching to running X display"
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# Normal make if we can connect to an X display
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debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\""
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${VIRTUALX_COMMAND} "$@"
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retval=$?
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fi
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# die if our command failed
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[[ $? -ne 0 ]] && die "${FUNCNAME}: the ${VIRTALX_COMMAND} failed."
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}
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# @FUNCTION: Xmake
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# @DESCRIPTION:
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# Same as "make", but set up the Xvfb hack if needed.
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# Deprecated call.
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Xmake() {
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debug-print-function ${FUNCNAME} "$@"
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ewarn "QA: you should not execute make directly"
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ewarn "QA: rather execute Xemake -j1 if you have issues with parallel make"
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VIRTUALX_COMMAND="emake -j1" virtualmake "$@"
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}
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# @FUNCTION: Xemake
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# @DESCRIPTION:
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# Same as "emake", but set up the Xvfb hack if needed.
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Xemake() {
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debug-print-function ${FUNCNAME} "$@"
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VIRTUALX_COMMAND="emake" virtualmake "$@"
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}
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# @FUNCTION: Xeconf
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# @DESCRIPTION:
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# Same as "econf", but set up the Xvfb hack if needed.
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Xeconf() {
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debug-print-function ${FUNCNAME} "$@"
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VIRTUALX_COMMAND="econf" virtualmake "$@"
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}
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