# Copyright 2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/qt4.eclass,v 1.44 2008/07/17 00:03:33 zlin Exp $

# @ECLASS: qt4.eclass
# @MAINTAINER:
# Caleb Tennis <caleb@gentoo.org>
# @BLURB: Eclass for Qt4 packages
# @DESCRIPTION:
# This eclass contains various functions that may be useful
# when dealing with packages using Qt4 libraries.

# 08.16.06 - Renamed qt_min_* to qt4_min_* to avoid conflicts with the qt3 eclass.
#    - Caleb Tennis <caleb@gentoo.org>

inherit eutils multilib toolchain-funcs versionator

QTPKG="x11-libs/qt-"
QT4MAJORVERSIONS="4.4 4.3 4.2 4.1 4.0"
QT4VERSIONS="4.4.0 4.4.0_beta1 4.4.0_rc1
	     4.3.4-r1 4.3.4 4.3.3 4.3.2-r1 4.3.2 4.3.1-r1 4.3.1
	     4.3.0-r2 4.3.0-r1 4.3.0 4.3.0_rc1 4.3.0_beta1
	     4.2.3-r1 4.2.3 4.2.2 4.2.1 4.2.0-r2 4.2.0-r1 4.2.0
	     4.1.4-r2 4.1.4-r1 4.1.4 4.1.3 4.1.2 4.1.1 4.1.0
	     4.0.1 4.0.0"

# @FUNCTION: qt4_min_version
# @USAGE: [minimum version]
# @DESCRIPTION:
# This function should be called in package DEPENDs whenever it depends on qt4.
# Simple example - in your depend, do something like this:
# DEPEND="$(qt4_min_version 4.2)"
# if the package can be build with qt-4.2 or higher.
#
# For builds that use an EAPI with support for SLOT dependencies, this will
# return a SLOT dependency, rather than a list of versions.
qt4_min_version() {
	case ${EAPI:-0} in
		# EAPIs without SLOT dependencies
		0)	echo "|| ("
			qt4_min_version_list "$@"
			echo ")"
			;;
		# EAPIS with SLOT dependencies.
		*)	echo ">=${QTPKG}${1}:4"
			;;
	esac
}

qt4_min_version_list() {
	local MINVER="$1"
	local VERSIONS=""

	case "${MINVER}" in
		4|4.0|4.0.0) VERSIONS="=${QTPKG}4*";;
		4.1|4.1.0|4.2|4.2.0|4.3|4.3.0|4.4|4.4.0)
			for x in ${QT4MAJORVERSIONS}; do
				if version_is_at_least "${MINVER}" "${x}"; then
					VERSIONS="${VERSIONS} =${QTPKG}${x}*"
				fi
			done
			;;
		4*)
			for x in ${QT4VERSIONS}; do
				if version_is_at_least "${MINVER}" "${x}"; then
					VERSIONS="${VERSIONS} =${QTPKG}${x}"
				fi
			done
			;;
		*) VERSIONS="=${QTPKG}4*";;
	esac

	echo "${VERSIONS}"
}

qt4_monolithic_to_split_flag() {
	case ${1} in
		zlib)
			# Qt 4.4+ is always built with zlib enabled, so this flag isn't needed
			;;
		gif|jpeg|png)
			# qt-gui always installs with these enabled
			checkpkgs+=" x11-libs/qt-gui"
			;;
		dbus|opengl)
			# Make sure the qt-${1} package has been installed already
			checkpkgs+=" x11-libs/qt-${1}"
			;;
		qt3support)
			checkpkgs+=" x11-libs/qt-${1}"
			checkflags+=" x11-libs/qt-core:${1} x11-libs/qt-gui:${1} x11-libs/qt-sql:${1}"
			;;
		ssl)
			# qt-core controls this flag
			checkflags+=" x11-libs/qt-core:${1}"
			;;
		cups|mng|nas|nis|tiff|xinerama|input_devices_wacom)
			# qt-gui controls these flags
			checkflags+=" x11-libs/qt-gui:${1}"
			;;
		firebird|mysql|odbc|postgres|sqlite3)
			# qt-sql controls these flags. sqlite2 is no longer supported so it uses sqlite instead of sqlite3.
			checkflags+=" x11-libs/qt-sql:${1%3}"
			;;
		accessibility)
			eerror "(QA message): Use guiaccessibility and/or qt3accessibility to specify which of qt-gui and qt-qt3support are relevant for this package."
			# deal with this gracefully by checking the flag for what is available
			for y in gui qt3support; do
				has_version x11-libs/qt-${y} && checkflags+=" x11-libs/qt-${y}:${1}"
			done
			;;
		guiaccessibility)
			checkflags+=" x11-libs/qt-gui:accessibility"
			;;
		qt3accessibility)
			checkflags+=" x11-libs/qt-qt3support:accessibility"
			;;
		debug|doc|examples|glib|pch|sqlite|*)
			# packages probably shouldn't be checking these flags so we don't handle them currently
			eerror "qt4.eclass currently doesn't handle the use flag ${1} in QT4_BUILT_WITH_USE_CHECK for qt-4.4. This is either an"
			eerror "eclass bug or an ebuild bug. Please report it at http://bugs.gentoo.org/"
			((fatalerrors+=1))
			;;
	esac
}

# @FUNCTION: qt4_pkg_setup
# @MAINTAINER:
# Caleb Tennis <caleb@gentoo.org>
# Przemyslaw Maciag <troll@gentoo.org>
# @DESCRIPTION:
# Default pkg_setup function for packages that depends on qt4. If you have to
# create ebuilds own pkg_setup in your ebuild, call qt4_pkg_setup in it.
# This function uses two global vars from ebuild:
# - QT4_BUILT_WITH_USE_CHECK - contains use flags that need to be turned on for
#   =x11-libs/qt-4*
# - QT4_OPTIONAL_BUILT_WITH_USE_CHECK - qt4 flags that provides some
#   functionality, but can alternatively be disabled in ${CATEGORY}/${PN}
#   (so qt4 don't have to be recompiled)
#
# flags to watch for for Qt4.4:
# zlib png | opengl dbus qt3support | sqlite3 ssl
qt4_pkg_setup() {
	local x y checkpkgs checkflags fatalerrors=0 requiredflags=""

	# lots of has_version calls can be very expensive
	if [[ -n ${QT4_BUILT_WITH_USE_CHECK}${QT4_OPTIONAL_BUILT_WITH_USE_CHECK} ]]; then
		has_version x11-libs/qt-core && local QT44=true
	fi

	for x in ${QT4_BUILT_WITH_USE_CHECK}; do
		if [[ -n ${QT44} ]]; then
			# The use flags are different in 4.4 and above, and it's split packages, so this is used to catch
			# the various use flag combos specified in the ebuilds to make sure we don't error out for no reason.
			qt4_monolithic_to_split_flag ${x}
		else
			[[ ${x} == *accessibility ]] && x=${x#gui} && x=${x#qt3}
			if ! built_with_use =x11-libs/qt-4* ${x}; then
				requiredflags="${requiredflags} ${x}"
			fi
		fi
	done

	local optionalflags=""
	for x in ${QT4_OPTIONAL_BUILT_WITH_USE_CHECK}; do
		if use ${x}; then
			if [[ -n ${QT44} ]]; then
				# The use flags are different in 4.4 and above, and it's split packages, so this is used to catch
				# the various use flag combos specified in the ebuilds to make sure we don't error out for no reason.
				qt4_monolithic_to_split_flag ${x}
			elif ! built_with_use =x11-libs/qt-4* ${x}; then
				optionalflags="${optionalflags} ${x}"
			fi
		fi
	done

	# The use flags are different in 4.4 and above, and it's split packages, so this is used to catch
	# the various use flag combos specified in the ebuilds to make sure we don't error out for no reason.
	for y in ${checkpkgs}; do
		if ! has_version ${y}; then
			eerror "You must first install the ${y} package. It should be added to the dependencies for this package (${CATEGORY}/${PN}). See bug #217161."
			((fatalerrors+=1))
		fi
	done
	for y in ${checkflags}; do
		if ! has_version ${y%:*}; then
			eerror "You must first install the ${y%:*} package with the ${y##*:} flag enabled."
			eerror "It should be added to the dependencies for this package (${CATEGORY}/${PN}). See bug #217161."
			((fatalerrors+=1))
		else
			if ! built_with_use ${y%:*} ${y##*:}; then
				eerror "You must first install the ${y%:*} package with the ${y##*:} flag enabled."
				((fatalerrors+=1))
			fi
		fi
	done

	local diemessage=""
	if [[ ${fatalerrors} -ne 0 ]]; then
		diemessage="${fatalerrors} fatal errors were detected. Please read the above error messages and act accordingly."
	fi
	if [[ -n ${requiredflags} ]]; then
		eerror
		eerror "(1) In order to compile ${CATEGORY}/${PN} first you need to build"
		eerror "=x11-libs/qt-4* with USE=\"${requiredflags}\" flag(s)"
		eerror
		diemessage="(1) recompile qt4 with \"${requiredflags}\" USE flag(s) ; "
	fi
	if [[ -n ${optionalflags} ]]; then
		eerror
		eerror "(2) You are trying to compile ${CATEGORY}/${PN} package with"
		eerror "USE=\"${optionalflags}\""
		eerror "while qt4 is built without this particular flag(s): it will"
		eerror "not work."
		eerror
		eerror "Possible solutions to this problem are:"
		eerror "a) install package ${CATEGORY}/${PN} without \"${optionalflags}\" USE flag(s)"
		eerror "b) re-emerge qt4 with \"${optionalflags}\" USE flag(s)"
		eerror
		diemessage="${diemessage}(2) recompile qt4 with \"${optionalflags}\" USE flag(s) or disable them for ${PN} package\n"
	fi

	[[ -n ${diemessage} ]] && die "can't install ${CATEGORY}/${PN}: ${diemessage}"
}

# @FUNCTION: eqmake4
# @USAGE: [.pro file] [additional parameters to qmake]
# @MAINTAINER:
# Przemyslaw Maciag <troll@gentoo.org>
# Davide Pesavento <davidepesa@gmail.com>
# @DESCRIPTION:
# Runs qmake on the specified .pro file (defaults to
# ${PN}.pro if eqmake4 was called with no argument).
# Additional parameters are passed unmodified to qmake.
eqmake4() {
	local LOGFILE="${T}/qmake-$$.out"
	local projprofile="${1}"
	[[ -z ${projprofile} ]] && projprofile="${PN}.pro"
	shift 1

	ebegin "Processing qmake ${projprofile}"

	# file exists?
	if [[ ! -f ${projprofile} ]]; then
		echo
		eerror "Project .pro file \"${projprofile}\" does not exists"
		eerror "qmake cannot handle non-existing .pro files"
		echo
		eerror "This shouldn't happen - please send a bug report to bugs.gentoo.org"
		echo
		die "Project file not found in ${PN} sources"
	fi

	echo >> ${LOGFILE}
	echo "******  qmake ${projprofile}  ******" >> ${LOGFILE}
	echo >> ${LOGFILE}

	# as a workaround for broken qmake, put everything into file
	if has debug ${IUSE} && use debug; then
		echo -e "\nCONFIG -= release\nCONFIG += no_fixpath debug" >> ${projprofile}
	else
		echo -e "\nCONFIG -= debug\nCONFIG += no_fixpath release" >> ${projprofile}
	fi

	/usr/bin/qmake ${projprofile} \
		QTDIR=/usr/$(get_libdir) \
		QMAKE=/usr/bin/qmake \
		QMAKE_CC=$(tc-getCC) \
		QMAKE_CXX=$(tc-getCXX) \
		QMAKE_LINK=$(tc-getCXX) \
		QMAKE_CFLAGS_RELEASE="${CFLAGS}" \
		QMAKE_CFLAGS_DEBUG="${CFLAGS}" \
		QMAKE_CXXFLAGS_RELEASE="${CXXFLAGS}" \
		QMAKE_CXXFLAGS_DEBUG="${CXXFLAGS}" \
		QMAKE_LFLAGS_RELEASE="${LDFLAGS}" \
		QMAKE_LFLAGS_DEBUG="${LDFLAGS}" \
		QMAKE_RPATH= \
		"${@}" >> ${LOGFILE} 2>&1

	local result=$?
	eend ${result}

	# was qmake successful?
	if [[ ${result} -ne 0 ]]; then
		echo
		eerror "Running qmake on \"${projprofile}\" has failed"
		echo
		eerror "This shouldn't happen - please send a bug report to bugs.gentoo.org"
		echo
		die "qmake failed on ${projprofile}"
	fi

	return ${result}
}

EXPORT_FUNCTIONS pkg_setup