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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 1.37 2011/03/13 08:25:36 scarabeus 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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|
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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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: ${VIRTUALX_REQUIRED:=test} |
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|
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# @ECLASS-VARIABLE: VIRTUALX_DEPEND |
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# @DESCRIPTION: |
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# Dep string available for use outside of eclass, in case a more |
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# complicated dep is needed. |
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# You can specify the variable BEFORE inherit to add more dependencies. |
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VIRTUALX_DEPEND="${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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|
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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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: ${VIRTUALX_COMMAND:="emake"} |
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|
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has "${EAPI:-0}" 0 1 && die "virtualx eclass require EAPI=2 or newer." |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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 "${FUNCNAME}: running Xvfb hack" |
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export XAUTHORITY= |
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# The following is derived from Mandrake's hack to allow |
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# compiling without the X display |
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|
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einfo "Scanning for an open DISPLAY to start Xvfb ..." |
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# If we are in a chrooted environment, and there is already a |
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# X server started outside of the chroot, Xvfb will fail to start |
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# on the same display (most cases this is :0 ), so make sure |
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# Xvfb is started, else bump the display number |
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# |
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# Azarah - 5 May 2002 |
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XDISPLAY=$(i=0; while [[ -f /tmp/.X${i}-lock ]] ; do ((i++));done; echo ${i}) |
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debug-print "${FUNCNAME}: XDISPLAY=${XDISPLAY}" |
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|
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# We really do not want SANDBOX enabled here |
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export SANDBOX_ON="0" |
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|
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debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}" |
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${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null & |
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sleep 2 |
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|
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local start=${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} ${xvfbargs} |
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echo |
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eerror "If possible, correct the above error and try your emerge again." |
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die "Unable to start Xvfb" |
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fi |
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|
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((XDISPLAY++)) |
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debug-print "${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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|
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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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[[ ${retval} -ne 0 ]] && die "${FUNCNAME}: the ${VIRTUALX_COMMAND} failed." |
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return 0 # always return 0, it can be altered by failed kill for Xvfb |
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} |
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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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|
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VIRTUALX_COMMAND="econf" virtualmake "$@" |
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} |
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