# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/mysql.eclass,v 1.132 2010/02/02 22:16:04 robbat2 Exp $

# @ECLASS: mysql.eclass
# @MAINTAINER:
# Author: Francesco Riosa (Retired) <vivo@gentoo.org>
# Maintainers: MySQL Team <mysql-bugs@gentoo.org>
#		- Luca Longinotti <chtekk@gentoo.org>
#		- Robin H. Johnson <robbat2@gentoo.org>
# @BLURB: This eclass provides most of the functions for mysql ebuilds
# @DESCRIPTION:
# The mysql.eclass provides almost all the code to build the mysql ebuilds
# including the src_unpack, src_prepare, src_configure, src_compile,
# scr_install, pkg_preinst, pkg_postinst, pkg_config and pkg_postrm
# phase hooks.

WANT_AUTOCONF="latest"
WANT_AUTOMAKE="latest"

inherit eutils flag-o-matic gnuconfig autotools mysql_fx versionator toolchain-funcs

# Shorten the path because the socket path length must be shorter than 107 chars
# and we will run a mysql server during test phase
S="${WORKDIR}/mysql"

[[ "${MY_EXTRAS_VER}" == "latest" ]] && MY_EXTRAS_VER="20090228-0714Z"
if [[ "${MY_EXTRAS_VER}" == "live" ]]; then
	EGIT_PROJECT=mysql-extras
	EGIT_REPO_URI="git://git.overlays.gentoo.org/proj/mysql-extras.git"
	inherit git
fi

case "${EAPI:-0}" in
	2)
		EXPORT_FUNCTIONS pkg_setup \
					src_unpack src_prepare \
					src_configure src_compile \
					src_install \
					pkg_preinst pkg_postinst \
					pkg_config pkg_postrm
		IUSE_DEFAULT_ON='+'
		;;
	0 | 1)
		EXPORT_FUNCTIONS pkg_setup \
					src_unpack \
					src_compile \
					src_install \
					pkg_preinst pkg_postinst \
					pkg_config pkg_postrm
		;;
	*)
		die "Unsupported EAPI: ${EAPI}" ;;
esac

# @ECLASS-VARIABLE: MYSQL_VERSION_ID
# @DESCRIPTION:
# MYSQL_VERSION_ID will be:
# major * 10e6 + minor * 10e4 + micro * 10e2 + gentoo revision number, all [0..99]
# This is an important part, because many of the choices the MySQL ebuild will do
# depend on this variable.
# In particular, the code below transforms a $PVR like "5.0.18-r3" in "5001803"
# We also strip off upstream's trailing letter that they use to respin tarballs

MYSQL_VERSION_ID=""
tpv="${PV%[a-z]}"
tpv=( ${tpv//[-._]/ } ) ; tpv[3]="${PVR:${#PV}}" ; tpv[3]="${tpv[3]##*-r}"
for vatom in 0 1 2 3 ; do
	# pad to length 2
	tpv[${vatom}]="00${tpv[${vatom}]}"
	MYSQL_VERSION_ID="${MYSQL_VERSION_ID}${tpv[${vatom}]:0-2}"
done
# strip leading "0" (otherwise it's considered an octal number by BASH)
MYSQL_VERSION_ID=${MYSQL_VERSION_ID##"0"}

# @ECLASS-VARIABLE: MYSQL_COMMUNITY_FEATURES
# @DESCRIPTION:
# Specifiy if community features are available. Possible values are 1 (yes)
# and 0 (no).
# Community features are available in mysql-community
# AND in the re-merged mysql-5.0.82 and newer
if [ "${PN}" == "mysql-community" ]; then
	MYSQL_COMMUNITY_FEATURES=1
elif [ "${PV#5.0}" != "${PV}" ] && mysql_version_is_at_least "5.0.82"; then
	MYSQL_COMMUNITY_FEATURES=1
elif [ "${PV#5.1}" != "${PV}" ] && mysql_version_is_at_least "5.1.28"; then
	MYSQL_COMMUNITY_FEATURES=1
elif [ "${PV#5.4}" != "${PV}" ] ; then
	MYSQL_COMMUNITY_FEATURES=1
elif [ "${PV#5.5}" != "${PV}" ] ; then
	MYSQL_COMMUNITY_FEATURES=1
elif [ "${PV#6.0}" != "${PV}" ] ; then
	MYSQL_COMMUNITY_FEATURES=1
else
	MYSQL_COMMUNITY_FEATURES=0
fi

# @ECLASS-VARIABLE: XTRADB_VER
# @DESCRIPTION:
# Version of the XTRADB storage engine
XTRADB_VER="${XTRADB_VER}"

# @ECLASS-VARIABLE: PERCONA_VER
# @DESCRIPTION:
# Designation by PERCONA for a MySQL version to apply an XTRADB release
PERCONA_VER="${PERCONA_VER}"

# Be warned, *DEPEND are version-dependant
# These are used for both runtime and compiletime
DEPEND="ssl? ( >=dev-libs/openssl-0.9.6d )
		userland_GNU? ( sys-process/procps )
		>=sys-apps/sed-4
		>=sys-apps/texinfo-4.7-r1
		>=sys-libs/readline-4.1
		>=sys-libs/zlib-1.2.3"

# Having different flavours at the same time is not a good idea
for i in "" "-community" ; do
	[[ "${i}" == ${PN#mysql} ]] ||
	DEPEND="${DEPEND} !dev-db/mysql${i}"
done

RDEPEND="${DEPEND}
		!minimal? ( dev-db/mysql-init-scripts )
		selinux? ( sec-policy/selinux-mysql )"

# compile-time-only
mysql_version_is_at_least "5.1" \
|| DEPEND="${DEPEND} berkdb? ( sys-apps/ed )"

# compile-time-only
mysql_version_is_at_least "5.1.12" \
&& DEPEND="${DEPEND} >=dev-util/cmake-2.4.3"

# dev-perl/DBD-mysql is needed by some scripts installed by MySQL
PDEPEND="perl? ( >=dev-perl/DBD-mysql-2.9004 )"

# For other stuff to bring us in
PDEPEND="${PDEPEND} =virtual/mysql-$(get_version_component_range 1-2 ${PV})"

# Work out the default SERVER_URI correctly
if [ -z "${SERVER_URI}" ]; then
	[ -z "${MY_PV}" ] && MY_PV="${PV//_/-}"
	# The community build is on the mirrors
	if [ "${MYSQL_COMMUNITY_FEATURES}" == "1" ]; then
		SERVER_URI="mirror://mysql/Downloads/MySQL-${PV%.*}/mysql-${MY_PV}.tar.gz"
	# The (old) enterprise source is on the primary site only
	elif [ "${PN}" == "mysql" ]; then
		SERVER_URI="ftp://ftp.mysql.com/pub/mysql/src/mysql-${MY_PV}.tar.gz"
	fi
fi

# Define correct SRC_URIs
SRC_URI="${SERVER_URI}"

# Gentoo patches to MySQL
[[ ${MY_EXTRAS_VER} != live ]] \
&& SRC_URI="${SRC_URI}
		mirror://gentoo/mysql-extras-${MY_EXTRAS_VER}.tar.bz2
		http://g3nt8.org/patches/mysql-extras-${MY_EXTRAS_VER}.tar.bz2
		http://dev.gentoo.org/~robbat2/distfiles/mysql-extras-${MY_EXTRAS_VER}.tar.bz2"

# PBXT engine
mysql_version_is_at_least "5.1.12" \
&& [[ -n "${PBXT_VERSION}" ]] \
&& PBXT_P="pbxt-${PBXT_VERSION}" \
&& PBXT_SRC_URI="mirror://sourceforge/pbxt/${PBXT_P}.tar.gz" \
&& SRC_URI="${SRC_URI} pbxt? ( ${PBXT_SRC_URI} )"

# Get the percona tarball if XTRADB_VER and PERCONA_VER are both set
mysql_version_is_at_least "5.1.26" \
&& [[ -n "${XTRADB_VER}" && -n "${PERCONA_VER}" ]] \
&& XTRADB_P="percona-xtradb-${XTRADB_VER}" \
&& XTRADB_SRC_URI="http://www.percona.com/${PN}/xtradb/${PERCONA_VER}/source/${XTRADB_P}.tar.gz" \
&& SRC_URI="${SRC_URI} xtradb? ( ${XTRADB_SRC_URI} )"

DESCRIPTION="A fast, multi-threaded, multi-user SQL database server."
HOMEPAGE="http://www.mysql.com/"
LICENSE="GPL-2"
SLOT="0"
IUSE="big-tables debug embedded minimal ${IUSE_DEFAULT_ON}perl selinux ssl static"

mysql_version_is_at_least "4.1" \
&& IUSE="${IUSE} latin1"

mysql_version_is_at_least "4.1.3" \
&& IUSE="${IUSE} cluster extraengine"

mysql_version_is_at_least "5.0" \
|| IUSE="${IUSE} raid"

mysql_version_is_at_least "5.0.18" \
&& IUSE="${IUSE} max-idx-128"

mysql_version_is_at_least "5.1" \
|| IUSE="${IUSE} berkdb"

mysql_version_is_at_least "5.1.12" \
&& [[ -n "${PBXT_VERSION}" ]] \
&& IUSE="${IUSE} pbxt"

mysql_version_is_at_least "5.1.26" \
&& [[ -n "${XTRADB_VER}" && -n "${PERCONA_VER}" ]] \
&& IUSE="${IUSE} xtradb"

[ "${MYSQL_COMMUNITY_FEATURES}" == "1" ] \
&& IUSE="${IUSE} ${IUSE_DEFAULT_ON}community profiling"

#
# HELPER FUNCTIONS:
#

# @FUNCTION: mysql_disable_test
# @DESCRIPTION:
# Helper function to disable specific tests.
mysql_disable_test() {
	local rawtestname testname testsuite reason mysql_disable_file
	rawtestname="${1}" ; shift
	reason="${@}"
	ewarn "test '${rawtestname}' disabled: '${reason}'"
	
	testsuite="${rawtestname/.*}"
	testname="${rawtestname/*.}"
	mysql_disable_file="${S}/mysql-test/t/disabled.def"
	#einfo "rawtestname=${rawtestname} testname=${testname} testsuite=${testsuite}"
	echo ${testname} : ${reason} >> "${mysql_disable_file}"

	# ${S}/mysql-tests/t/disabled.def
	#
	# ${S}/mysql-tests/suite/federated/disabled.def
	#
	# ${S}/mysql-tests/suite/jp/t/disabled.def
	# ${S}/mysql-tests/suite/ndb/t/disabled.def
	# ${S}/mysql-tests/suite/rpl/t/disabled.def
	# ${S}/mysql-tests/suite/parts/t/disabled.def
	# ${S}/mysql-tests/suite/rpl_ndb/t/disabled.def
	# ${S}/mysql-tests/suite/ndb_team/t/disabled.def
	# ${S}/mysql-tests/suite/binlog/t/disabled.def
	# ${S}/mysql-tests/suite/innodb/t/disabled.def
	if [ -n "${testsuite}" ]; then
		for mysql_disable_file in \
			${S}/mysql-test/suite/${testsuite}/disabled.def  \
			${S}/mysql-test/suite/${testsuite}/t/disabled.def  \
			FAILED ; do
			[ -f "${mysql_disable_file}" ] && break
		done
		if [ "${mysql_disabled_file}" != "FAILED" ]; then
			echo "${testname} : ${reason}" >> "${mysql_disable_file}"
		else
			ewarn "Could not find testsuite disabled.def location for ${rawtestname}"
		fi
	fi
}

# @FUNCTION: mysql_init_vars
# @DESCRIPTION:
# void mysql_init_vars()
# Initialize global variables
# 2005-11-19 <vivo@gentoo.org>
mysql_init_vars() {
	MY_SHAREDSTATEDIR=${MY_SHAREDSTATEDIR="/usr/share/mysql"}
	MY_SYSCONFDIR=${MY_SYSCONFDIR="/etc/mysql"}
	MY_LIBDIR=${MY_LIBDIR="/usr/$(get_libdir)/mysql"}
	MY_LOCALSTATEDIR=${MY_LOCALSTATEDIR="/var/lib/mysql"}
	MY_LOGDIR=${MY_LOGDIR="/var/log/mysql"}
	MY_INCLUDEDIR=${MY_INCLUDEDIR="/usr/include/mysql"}

	if [[ -z "${MY_DATADIR}" ]] ; then
		MY_DATADIR=""
		if [[ -f "${MY_SYSCONFDIR}/my.cnf" ]] ; then
			MY_DATADIR=`"my_print_defaults" mysqld 2>/dev/null \
				| sed -ne '/datadir/s|^--datadir=||p' \
				| tail -n1`
			if [[ -z "${MY_DATADIR}" ]] ; then
				MY_DATADIR=`grep ^datadir "${MY_SYSCONFDIR}/my.cnf" \
				| sed -e 's/.*=\s*//' \
				| tail -n1`
			fi
		fi
		if [[ -z "${MY_DATADIR}" ]] ; then
			MY_DATADIR="${MY_LOCALSTATEDIR}"
			einfo "Using default MY_DATADIR"
		fi
		elog "MySQL MY_DATADIR is ${MY_DATADIR}"

		if [[ -z "${PREVIOUS_DATADIR}" ]] ; then
			if [[ -e "${MY_DATADIR}" ]] ; then
				# If you get this and you're wondering about it, see bug #207636
				elog "MySQL datadir found in ${MY_DATADIR}"
				elog "A new one will not be created."
				PREVIOUS_DATADIR="yes"
			else
				PREVIOUS_DATADIR="no"
			fi
			export PREVIOUS_DATADIR
		fi
	else
		if [[ ${EBUILD_PHASE} == "config" ]]; then
			local new_MY_DATADIR
			new_MY_DATADIR=`"my_print_defaults" mysqld 2>/dev/null \
				| sed -ne '/datadir/s|^--datadir=||p' \
				| tail -n1`

			if [[ ( -n "${new_MY_DATADIR}" ) && ( "${new_MY_DATADIR}" != "${MY_DATADIR}" ) ]]; then
				ewarn "MySQL MY_DATADIR has changed"
				ewarn "from ${MY_DATADIR}"
				ewarn "to ${new_MY_DATADIR}"
				MY_DATADIR="${new_MY_DATADIR}"
			fi
		fi
	fi

	MY_SOURCEDIR=${SERVER_URI##*/}
	MY_SOURCEDIR=${MY_SOURCEDIR%.tar*}

	export MY_SHAREDSTATEDIR MY_SYSCONFDIR
	export MY_LIBDIR MY_LOCALSTATEDIR MY_LOGDIR
	export MY_INCLUDEDIR MY_DATADIR MY_SOURCEDIR
}

configure_minimal() {
	# These are things we exclude from a minimal build, please
	# note that the server actually does get built and installed,
	# but we then delete it before packaging.
	local minimal_exclude_list="server embedded-server extra-tools innodb bench berkeley-db row-based-replication readline"

	for i in ${minimal_exclude_list} ; do
		myconf="${myconf} --without-${i}"
	done
	myconf="${myconf} --with-extra-charsets=none"
	myconf="${myconf} --enable-local-infile"

	if use static ; then
		myconf="${myconf} --with-client-ldflags=-all-static"
		myconf="${myconf} --disable-shared --with-pic"
	else
		myconf="${myconf} --enable-shared --enable-static"
	fi

	if mysql_version_is_at_least "4.1" && ! use latin1 ; then
		myconf="${myconf} --with-charset=utf8"
		myconf="${myconf} --with-collation=utf8_general_ci"
	else
		myconf="${myconf} --with-charset=latin1"
		myconf="${myconf} --with-collation=latin1_swedish_ci"
	fi
}

configure_common() {
	myconf="${myconf} $(use_with big-tables)"
	myconf="${myconf} --enable-local-infile"
	myconf="${myconf} --with-extra-charsets=all"
	myconf="${myconf} --with-mysqld-user=mysql"
	myconf="${myconf} --with-server"
	myconf="${myconf} --with-unix-socket-path=/var/run/mysqld/mysqld.sock"
	myconf="${myconf} --without-libwrap"

	if use static ; then
		myconf="${myconf} --with-mysqld-ldflags=-all-static"
		myconf="${myconf} --with-client-ldflags=-all-static"
		myconf="${myconf} --disable-shared --with-pic"
	else
		myconf="${myconf} --enable-shared --enable-static"
	fi

	if use debug ; then
		myconf="${myconf} --with-debug=full"
	else
		myconf="${myconf} --without-debug"
		mysql_version_is_at_least "4.1.3" \
		&& use cluster \
		&& myconf="${myconf} --without-ndb-debug"
	fi

	if [ -n "${MYSQL_DEFAULT_CHARSET}" -a -n "${MYSQL_DEFAULT_COLLATION}" ]; then
		ewarn "You are using a custom charset of ${MYSQL_DEFAULT_CHARSET}"
		ewarn "and a collation of ${MYSQL_DEFAULT_COLLATION}."
		ewarn "You MUST file bugs without these variables set."
		myconf="${myconf} --with-charset=${MYSQL_DEFAULT_CHARSET}"
		myconf="${myconf} --with-collation=${MYSQL_DEFAULT_COLLATION}"
	elif mysql_version_is_at_least "4.1" && ! use latin1 ; then
		myconf="${myconf} --with-charset=utf8"
		myconf="${myconf} --with-collation=utf8_general_ci"
	else
		myconf="${myconf} --with-charset=latin1"
		myconf="${myconf} --with-collation=latin1_swedish_ci"
	fi

	if use embedded ; then
		myconf="${myconf} --with-embedded-privilege-control"
		myconf="${myconf} --with-embedded-server"
	else
		myconf="${myconf} --without-embedded-privilege-control"
		myconf="${myconf} --without-embedded-server"
	fi

}

configure_40_41_50() {
	myconf="${myconf} $(use_with perl bench)"
	myconf="${myconf} --enable-assembler"
	myconf="${myconf} --with-extra-tools"
	myconf="${myconf} --with-innodb"
	myconf="${myconf} --without-readline"
	mysql_version_is_at_least "5.0" || myconf="${myconf} $(use_with raid)"

	# --with-vio is not needed anymore, it's on by default and
	# has been removed from configure
	if use ssl ; then
		 mysql_version_is_at_least "5.0.4" || myconf="${myconf} --with-vio"
	fi

	if mysql_version_is_at_least "5.1.11" ; then
		myconf="${myconf} $(use_with ssl)"
	else
		myconf="${myconf} $(use_with ssl openssl)"
	fi

	if mysql_version_is_at_least "5.0.60" ; then
			if use berkdb ; then
				elog "Berkeley DB support was disabled due to build failures"
				elog "on multiple arches, go to a version earlier than 5.0.60"
				elog "if you want it again. Gentoo bug #224067."
			fi
			myconf="${myconf} --without-berkeley-db"
	elif use berkdb ; then
		# The following fix is due to a bug with bdb on SPARC's. See:
		# http://www.geocrawler.com/mail/msg.php3?msg_id=4754814&list=8
		# It comes down to non-64-bit safety problems.
		if use alpha || use amd64 || use hppa || use mips || use sparc ; then
			elog "Berkeley DB support was disabled due to compatibility issues on this arch"
			myconf="${myconf} --without-berkeley-db"
		else
			myconf="${myconf} --with-berkeley-db=./bdb"
		fi
	else
		myconf="${myconf} --without-berkeley-db"
	fi

	if mysql_version_is_at_least "4.1.3" ; then
		myconf="${myconf} --with-geometry"
		myconf="${myconf} $(use_with cluster ndbcluster)"
	fi

	if mysql_version_is_at_least "4.1.3" && use extraengine ; then
		# http://dev.mysql.com/doc/mysql/en/archive-storage-engine.html
		myconf="${myconf} --with-archive-storage-engine"

		# http://dev.mysql.com/doc/mysql/en/csv-storage-engine.html
		myconf="${myconf} --with-csv-storage-engine"

		# http://dev.mysql.com/doc/mysql/en/blackhole-storage-engine.html
		myconf="${myconf} --with-blackhole-storage-engine"

		# http://dev.mysql.com/doc/mysql/en/federated-storage-engine.html
		# http://dev.mysql.com/doc/mysql/en/federated-description.html
		# http://dev.mysql.com/doc/mysql/en/federated-limitations.html
		if mysql_version_is_at_least "5.0.3" ; then
			elog "Before using the Federated storage engine, please be sure to read"
			elog "http://dev.mysql.com/doc/mysql/en/federated-limitations.html"
			myconf="${myconf} --with-federated-storage-engine"
		fi
	fi

	if [ "${MYSQL_COMMUNITY_FEATURES}" == "1" ]; then
		myconf="${myconf} `use_enable community community-features`"
		if use community; then
			myconf="${myconf} `use_enable profiling`"
		else
			myconf="${myconf} --disable-profiling"
		fi
	fi

	mysql_version_is_at_least "5.0.18" \
	&& use max-idx-128 \
	&& myconf="${myconf} --with-max-indexes=128"
}

configure_51() {
	# TODO: !!!! readd --without-readline
	# the failure depend upon config/ac-macros/readline.m4 checking into
	# readline.h instead of history.h
	myconf="${myconf} $(use_with ssl)"
	myconf="${myconf} --enable-assembler"
	myconf="${myconf} --with-geometry"
	myconf="${myconf} --with-readline"
	myconf="${myconf} --with-row-based-replication"
	myconf="${myconf} --with-zlib=/usr/$(get_libdir)"
	myconf="${myconf} --without-pstack"
	use max-idx-128 && myconf="${myconf} --with-max-indexes=128"

	# 5.1 introduces a new way to manage storage engines (plugins)
	# like configuration=none
	local plugins="csv,myisam,myisammrg,heap"
	if use extraengine ; then
		# like configuration=max-no-ndb, archive and example removed in 5.1.11
		# not added yet: ibmdb2i
		# Not supporting as examples: example,daemon_example,ftexample 
		plugins="${plugins},archive,blackhole,federated,partition"

		elog "Before using the Federated storage engine, please be sure to read"
		elog "http://dev.mysql.com/doc/refman/5.1/en/federated-limitations.html"
	fi

	# Upstream specifically requests that InnoDB always be built:
	# - innobase, innodb_plugin
	# Build falcon if available for 6.x series.
	for i in innobase innodb_plugin falcon ; do
		[ -e "${S}"/storage/${i} ] && plugins="${plugins},${i}"
	done

	# like configuration=max-no-ndb
	if use cluster ; then
		plugins="${plugins},ndbcluster"
		myconf="${myconf} --with-ndb-binlog"
	fi

	myconf="${myconf} --with-plugins=${plugins}"
}

pbxt_src_configure() {
	mysql_init_vars

	pushd "${WORKDIR}/pbxt-${PBXT_VERSION}" &>/dev/null

	einfo "Reconfiguring dir '${PWD}'"
	AT_GNUCONF_UPDATE="yes" eautoreconf

	local myconf=""
	myconf="${myconf} --with-mysql=${S} --libdir=${D}/${MY_LIBDIR}"
	use debug && myconf="${myconf} --with-debug=full"
	# TODO: is it safe/needed to use econf here ?
	./configure ${myconf} || die "Problem configuring PBXT storage engine"
}

pbxt_src_compile() {
	# Be backwards compatible for now
	if [[ $EAPI != 2 ]]; then
		pbxt_src_configure
	fi
	# TODO: is it safe/needed to use emake here ?
	make || die "Problem making PBXT storage engine (${myconf})"

	popd
	# TODO: modify test suite for PBXT
}

pbxt_src_install() {
	pushd "${WORKDIR}/pbxt-${PBXT_VERSION}" &>/dev/null
		make install || die "Failed to install PBXT"
	popd
}

#
# EBUILD FUNCTIONS
#
# @FUNCTION: mysql_pkg_setup
# @DESCRIPTION:
# Perform some basic tests and tasks during pkg_setup phase:
#   die if FEATURES="test", USE="-minimal" and not using FEATURES="userpriv"
#   check for conflicting use flags
#   create new user and group for mysql
#   warn about deprecated features
mysql_pkg_setup() {
	if hasq test ${FEATURES} ; then
		if ! use minimal ; then
			if [[ $UID -eq 0 ]]; then
				eerror "Testing with FEATURES=-userpriv is no longer supported by upstream. Tests MUST be run as non-root."
			fi
		fi
	fi

	# Check for USE flag problems in pkg_setup
	if use static && use ssl ; then
		eerror "MySQL does not support being built statically with SSL support enabled!"
		die "MySQL does not support being built statically with SSL support enabled!"
	fi

	if ! mysql_version_is_at_least "5.0" \
	&& use raid \
	&& use static ; then
		eerror "USE flags 'raid' and 'static' conflict, you cannot build MySQL statically"
		eerror "with RAID support enabled."
		die "USE flags 'raid' and 'static' conflict!"
	fi

	if mysql_version_is_at_least "4.1.3" \
	&& ( use cluster || use extraengine ) \
	&& use minimal ; then
		eerror "USE flags 'cluster' and 'extraengine' conflict with 'minimal' USE flag!"
		die "USE flags 'cluster' and 'extraengine' conflict with 'minimal' USE flag!"
	fi

	# Bug #290570 fun. Upstream made us need a fairly new GCC4.
	if mysql_version_is_at_least "5.0.83" ; then
		GCC_VER=$(gcc-version)
		case ${GCC_VER} in
			2*|3*|4.0|4.1|4.2) die "Active GCC too old! Must have at least GCC4.3" ;;
		esac
	fi

	# This should come after all of the die statements
	enewgroup mysql 60 || die "problem adding 'mysql' group"
	enewuser mysql 60 -1 /dev/null mysql || die "problem adding 'mysql' user"

	mysql_check_version_range "4.0 to 5.0.99.99" \
	&& use berkdb \
	&& elog "Berkeley DB support is deprecated and will be removed in future versions!"
}

# @FUNCTION: mysql_src_unpack
# @DESCRIPTION:
# Unpack the source code and call mysql_src_prepare for EAPI < 2.
mysql_src_unpack() {
	# Initialize the proper variables first
	mysql_init_vars

	unpack ${A}
	# Grab the patches
	[[ "${MY_EXTRAS_VER}" == "live" ]] && S="${WORKDIR}/mysql-extras" git_src_unpack

	mv -f "${WORKDIR}/${MY_SOURCEDIR}" "${S}"

	# Be backwards compatible for now
	case ${EAPI:-0} in
        	2) : ;;
        	0 | 1) mysql_src_prepare ;;
	esac
}

# @FUNCTION: mysql_src_prepare
# @DESCRIPTION:
# Apply patches to the source code and remove unneeded bundled libs.
mysql_src_prepare() {
	cd "${S}"

	# Apply the patches for this MySQL version
	EPATCH_SUFFIX="patch"
	mkdir -p "${EPATCH_SOURCE}" || die "Unable to create epatch directory"
	# Clean out old items
	rm -f "${EPATCH_SOURCE}"/*
	# Now link in right patches
	mysql_mv_patches
	# And apply
	epatch

	# Additional checks, remove bundled zlib
	rm -f "${S}/zlib/"*.[ch]
	sed -i -e "s/zlib\/Makefile dnl/dnl zlib\/Makefile/" "${S}/configure.in"
	rm -f "scripts/mysqlbug"

	# Make charsets install in the right place
	find . -name 'Makefile.am' \
		-exec sed --in-place -e 's!$(pkgdatadir)!'${MY_SHAREDSTATEDIR}'!g' {} \;

	if mysql_version_is_at_least "4.1" ; then
		# Remove what needs to be recreated, so we're sure it's actually done
		einfo "Cleaning up old buildscript files"
		find . -name Makefile \
			-o -name Makefile.in \
			-o -name configure \
			-exec rm -f {} \;
		rm -f "ltmain.sh"
		rm -f "scripts/mysqlbug"
	fi

	local rebuilddirlist d

	if mysql_version_is_at_least "5.1.26" && use xtradb ; then
		einfo "Replacing InnoDB with Percona XtraDB"
		pushd "${S}"/storage
		i="innobase"
		o="${WORKDIR}/storage-${i}.mysql-upstream"
		# Have we been here already?
		[ -h "${i}" ] && rm -f "${i}"
		# Or maybe we haven't
		[ -d "${i}" -a ! -d "${o}" ] && mv "${i}" "${o}"
		ln -s "${WORKDIR}/${XTRADB_P}" "${i}"
		popd
	fi

	if mysql_version_is_at_least "5.1.12" ; then
		einfo "Updating innobase cmake"
		rebuilddirlist="."
		# TODO: check this with a cmake expert
		cmake \
			-DCMAKE_C_COMPILER=$(type -P $(tc-getCC)) \
			-DCMAKE_CXX_COMPILER=$(type -P $(tc-getCXX)) \
			"storage/innobase"
	else
		rebuilddirlist=". innobase"
	fi

	for d in ${rebuilddirlist} ; do
		einfo "Reconfiguring dir '${d}'"
		pushd "${d}" &>/dev/null
		AT_GNUCONF_UPDATE="yes" eautoreconf
		popd &>/dev/null
	done

	if mysql_check_version_range "4.1 to 5.0.99.99" \
	&& use berkdb ; then
		einfo "Fixing up berkdb buildsystem"
		[[ -w "bdb/dist/ltmain.sh" ]] && cp -f "ltmain.sh" "bdb/dist/ltmain.sh"
		cp -f "/usr/share/aclocal/libtool.m4" "bdb/dist/aclocal/libtool.ac" \
		|| die "Could not copy libtool.m4 to bdb/dist/"
		#These files exist only with libtool-2*, and need to be included.
		if [ -f '/usr/share/aclocal/ltsugar.m4' ]; then
			cat "/usr/share/aclocal/ltsugar.m4" >>  "bdb/dist/aclocal/libtool.ac"
			cat "/usr/share/aclocal/ltversion.m4" >>  "bdb/dist/aclocal/libtool.ac"
			cat "/usr/share/aclocal/lt~obsolete.m4" >>  "bdb/dist/aclocal/libtool.ac"
			cat "/usr/share/aclocal/ltoptions.m4" >>  "bdb/dist/aclocal/libtool.ac"
		fi
		pushd "bdb/dist" &>/dev/null
		sh s_all \
		|| die "Failed bdb reconfigure"
		popd &>/dev/null
	fi
}

# @FUNCTION: mysql_src_configure
# @DESCRIPTION:
# Configure mysql to build the code for Gentoo respecting the use flags.
mysql_src_configure() {
	# Make sure the vars are correctly initialized
	mysql_init_vars

	# $myconf is modified by the configure_* functions
	local myconf=""

	if use minimal ; then
		configure_minimal
	else
		configure_common
		if mysql_version_is_at_least "5.1.10" ; then
			configure_51
		else
			configure_40_41_50
		fi
	fi

	# Bug #114895, bug #110149
	filter-flags "-O" "-O[01]"

	# glib-2.3.2_pre fix, bug #16496
	append-flags "-DHAVE_ERRNO_AS_DEFINE=1"

	# As discovered by bug #246652, doing a double-level of SSP causes NDB to
	# fail badly during cluster startup.
	if [[ $(gcc-major-version) -lt 4 ]]; then
		filter-flags "-fstack-protector-all"
	fi

	CXXFLAGS="${CXXFLAGS} -fno-exceptions -fno-strict-aliasing"
	CXXFLAGS="${CXXFLAGS} -felide-constructors -fno-rtti"
	mysql_version_is_at_least "5.0" \
	&& CXXFLAGS="${CXXFLAGS} -fno-implicit-templates"
	export CXXFLAGS

	# bug #283926, with GCC4.4, this is required to get correct behavior.
	append-flags -fno-strict-aliasing

	econf \
		--libexecdir="/usr/sbin" \
		--sysconfdir="${MY_SYSCONFDIR}" \
		--localstatedir="${MY_LOCALSTATEDIR}" \
		--sharedstatedir="${MY_SHAREDSTATEDIR}" \
		--libdir="${MY_LIBDIR}" \
		--includedir="${MY_INCLUDEDIR}" \
		--with-low-memory \
		--with-client-ldflags=-lstdc++ \
		--enable-thread-safe-client \
		--with-comment="Gentoo Linux ${PF}" \
		--without-docs \
		${myconf} || die "econf failed"

	# TODO: Move this before autoreconf !!!
	find . -type f -name Makefile -print0 \
	| xargs -0 -n100 sed -i \
	-e 's|^pkglibdir *= *$(libdir)/mysql|pkglibdir = $(libdir)|;s|^pkgincludedir *= *$(includedir)/mysql|pkgincludedir = $(includedir)|'

	if [[ $EAPI == 2 ]]; then
		mysql_version_is_at_least "5.1.12" && use pbxt && pbxt_src_configure
	fi
}

# @FUNCTION: mysql_src_compile
# @DESCRIPTION:
# Compile the mysql code.
mysql_src_compile() {
	# Be backwards compatible for now
        case ${EAPI:-0} in
                2) : ;;
                0 | 1) mysql_src_configure ;;
        esac

	emake || die "emake failed"

	mysql_version_is_at_least "5.1.12" && use pbxt && pbxt_src_compile
}

# @FUNCTION: mysql_src_install
# @DESCRIPTION:
# Install mysql.
mysql_src_install() {
	# Make sure the vars are correctly initialized
	mysql_init_vars

	emake install DESTDIR="${D}" benchdir_root="${MY_SHAREDSTATEDIR}" || die "emake install failed"

	mysql_version_is_at_least "5.1.12" && use pbxt && pbxt_src_install

	# Convenience links
	einfo "Making Convenience links for mysqlcheck multi-call binary"
	dosym "/usr/bin/mysqlcheck" "/usr/bin/mysqlanalyze"
	dosym "/usr/bin/mysqlcheck" "/usr/bin/mysqlrepair"
	dosym "/usr/bin/mysqlcheck" "/usr/bin/mysqloptimize"

	# Various junk (my-*.cnf moved elsewhere)
	einfo "Removing duplicate /usr/share/mysql files"
	rm -Rf "${D}/usr/share/info"
	for removeme in  "mysql-log-rotate" mysql.server* \
		binary-configure* my-*.cnf mi_test_all*
	do
		rm -f "${D}"/usr/share/mysql/${removeme}
	done

	# Clean up stuff for a minimal build
	if use minimal ; then
		einfo "Remove all extra content for minimal build"
		rm -Rf "${D}${MY_SHAREDSTATEDIR}"/{mysql-test,sql-bench}
		rm -f "${D}"/usr/bin/{mysql{_install_db,manager*,_secure_installation,_fix_privilege_tables,hotcopy,_convert_table_format,d_multi,_fix_extensions,_zap,_explain_log,_tableinfo,d_safe,_install,_waitpid,binlog,test},myisam*,isam*,pack_isam}
		rm -f "${D}/usr/sbin/mysqld"
		rm -f "${D}${MY_LIBDIR}"/lib{heap,merge,nisam,my{sys,strings,sqld,isammrg,isam},vio,dbug}.a
	fi

	# Configuration stuff
	if mysql_version_is_at_least "4.1" ; then
		mysql_mycnf_version="4.1"
	else
		mysql_mycnf_version="4.0"
	fi
	einfo "Building default my.cnf"
	insinto "${MY_SYSCONFDIR}"
	doins scripts/mysqlaccess.conf
	sed -e "s!@DATADIR@!${MY_DATADIR}!g" \
		"${FILESDIR}/my.cnf-${mysql_mycnf_version}" \
		> "${TMPDIR}/my.cnf.ok"
	if mysql_version_is_at_least "4.1" && use latin1 ; then
		sed -e "s|utf8|latin1|g" -i "${TMPDIR}/my.cnf.ok"
	fi
	newins "${TMPDIR}/my.cnf.ok" my.cnf

	# Minimal builds don't have the MySQL server
	if ! use minimal ; then
		einfo "Creating initial directories"
		# Empty directories ...
		diropts "-m0750"
		if [[ "${PREVIOUS_DATADIR}" != "yes" ]] ; then
			dodir "${MY_DATADIR}"
			keepdir "${MY_DATADIR}"
			chown -R mysql:mysql "${D}/${MY_DATADIR}"
		fi

		diropts "-m0755"
		for folder in "${MY_LOGDIR}" "/var/run/mysqld" ; do
			dodir "${folder}"
			keepdir "${folder}"
			chown -R mysql:mysql "${D}/${folder}"
		done
	fi

	# Docs
	einfo "Installing docs"
	dodoc README COPYING ChangeLog EXCEPTIONS-CLIENT INSTALL-SOURCE
	doinfo "${S}"/Docs/mysql.info

	# Minimal builds don't have the MySQL server
	if ! use minimal ; then
		einfo "Including support files and sample configurations"
		docinto "support-files"
		for script in \
			"${S}"/support-files/my-*.cnf \
			"${S}"/support-files/magic \
			"${S}"/support-files/ndb-config-2-node.ini
		do
			dodoc "${script}"
		done

		docinto "scripts"
		for script in "${S}"/scripts/mysql* ; do
			[[ "${script%.sh}" == "${script}" ]] && dodoc "${script}"
		done

	fi

	mysql_lib_symlinks "${D}"
}

# @FUNCTION: mysql_pkg_preinst
# @DESCRIPTION:
# Create the user and groups for mysql - die if that fails.
mysql_pkg_preinst() {
	enewgroup mysql 60 || die "problem adding 'mysql' group"
	enewuser mysql 60 -1 /dev/null mysql || die "problem adding 'mysql' user"
}

# @FUNCTION: mysql_pkg_postinst
# @DESCRIPTION:
# Run post-installation tasks:
#   create the dir for logfiles if non-existant
#   touch the logfiles and secure them
#   install scripts
#   issue required steps for optional features
#   issue deprecation warnings
mysql_pkg_postinst() {
	# Make sure the vars are correctly initialized
	mysql_init_vars

	# Check FEATURES="collision-protect" before removing this
	[[ -d "${ROOT}/var/log/mysql" ]] || install -d -m0750 -o mysql -g mysql "${ROOT}${MY_LOGDIR}"

	# Secure the logfiles
	touch "${ROOT}${MY_LOGDIR}"/mysql.{log,err}
	chown mysql:mysql "${ROOT}${MY_LOGDIR}"/mysql*
	chmod 0660 "${ROOT}${MY_LOGDIR}"/mysql*

	# Minimal builds don't have the MySQL server
	if ! use minimal ; then
		docinto "support-files"
		for script in \
			support-files/my-*.cnf \
			support-files/magic \
			support-files/ndb-config-2-node.ini
		do
			dodoc "${script}"
		done

		docinto "scripts"
		for script in scripts/mysql* ; do
			[[ "${script%.sh}" == "${script}" ]] && dodoc "${script}"
		done

		einfo
		elog "You might want to run:"
		elog "\"emerge --config =${CATEGORY}/${PF}\""
		elog "if this is a new install."
		einfo
	fi

	if mysql_version_is_at_least "5.1.12" && use pbxt ; then
		# TODO: explain it better
		elog "    mysql> INSTALL PLUGIN pbxt SONAME 'libpbxt.so';"
		elog "    mysql> CREATE TABLE t1 (c1 int, c2 text) ENGINE=pbxt;"
		elog "if, after that, you cannot start the MySQL server,"
		elog "remove the ${MY_DATADIR}/mysql/plugin.* files, then"
		elog "use the MySQL upgrade script to restore the table"
		elog "or execute the following SQL command:"
		elog "    CREATE TABLE IF NOT EXISTS plugin ("
		elog "      name char(64) binary DEFAULT '' NOT NULL,"
		elog "      dl char(128) DEFAULT '' NOT NULL,"
		elog "      PRIMARY KEY (name)"
		elog "    ) CHARACTER SET utf8 COLLATE utf8_bin;"
	fi

	mysql_check_version_range "4.0 to 5.0.99.99" \
	&& use berkdb \
	&& elog "Berkeley DB support is deprecated and will be removed in future versions!"
}

# @FUNCTION: mysql_pkg_config
# @DESCRIPTION:
# Configure mysql environment.
mysql_pkg_config() {
	local old_MY_DATADIR="${MY_DATADIR}"

	# Make sure the vars are correctly initialized
	mysql_init_vars

	[[ -z "${MY_DATADIR}" ]] && die "Sorry, unable to find MY_DATADIR"

	if built_with_use ${CATEGORY}/${PN} minimal ; then
		die "Minimal builds do NOT include the MySQL server"
	fi

	if [[ ( -n "${MY_DATADIR}" ) && ( "${MY_DATADIR}" != "${old_MY_DATADIR}" ) ]]; then
		local MY_DATADIR_s="$(strip_duplicate_slashes ${ROOT}/${MY_DATADIR})"
		local old_MY_DATADIR_s="$(strip_duplicate_slashes ${ROOT}/${old_MY_DATADIR})"

		if [[ -d "${old_MY_DATADIR_s}" ]]; then
			if [[ -d "${MY_DATADIR_s}" ]]; then
				ewarn "Both ${old_MY_DATADIR_s} and ${MY_DATADIR_s} exist"
				ewarn "Attempting to use ${MY_DATADIR_s} and preserving ${old_MY_DATADIR_s}"
			else
				elog "Moving MY_DATADIR from ${old_MY_DATADIR_s} to ${MY_DATADIR_s}"
				mv --strip-trailing-slashes -T "${old_MY_DATADIR_s}" "${MY_DATADIR_s}" \
				|| die "Moving MY_DATADIR failed"
			fi
		else
			ewarn "Previous MY_DATADIR (${old_MY_DATADIR_s}) does not exist"
			if [[ -d "${MY_DATADIR_s}" ]]; then
				ewarn "Attempting to use ${MY_DATADIR_s}"
			else
				eerror "New MY_DATADIR (${MY_DATADIR_s}) does not exist"
				die "Configuration Failed!  Please reinstall ${CATEGORY}/${PN}"
			fi
		fi
	fi

	local pwd1="a"
	local pwd2="b"
	local maxtry=5

	if [[ -d "${ROOT}/${MY_DATADIR}/mysql" ]] ; then
		ewarn "You have already a MySQL database in place."
		ewarn "(${ROOT}/${MY_DATADIR}/*)"
		ewarn "Please rename or delete it if you wish to replace it."
		die "MySQL database already exists!"
	fi

	# Bug #213475 - MySQL _will_ object strenously if your machine is named
	# localhost. Also causes weird failures.
	[[ "${HOSTNAME}" == "localhost" ]] && die "Your machine must NOT be named localhost"

	einfo "Creating the mysql database and setting proper"
	einfo "permissions on it ..."

	einfo "Insert a password for the mysql 'root' user"
	ewarn "Avoid [\"'\\_%] characters in the password"
	read -rsp "    >" pwd1 ; echo

	einfo "Retype the password"
	read -rsp "    >" pwd2 ; echo

	if [[ "x$pwd1" != "x$pwd2" ]] ; then
		die "Passwords are not the same"
	fi

	local options=""
	local sqltmp="$(emktemp)"

	local help_tables="${ROOT}${MY_SHAREDSTATEDIR}/fill_help_tables.sql"
	[[ -r "${help_tables}" ]] \
	&& cp "${help_tables}" "${TMPDIR}/fill_help_tables.sql" \
	|| touch "${TMPDIR}/fill_help_tables.sql"
	help_tables="${TMPDIR}/fill_help_tables.sql"

	pushd "${TMPDIR}" &>/dev/null
	"${ROOT}/usr/bin/mysql_install_db" >"${TMPDIR}"/mysql_install_db.log 2>&1
	if [ $? -ne 0 ]; then
		grep -B5 -A999 -i "ERROR" "${TMPDIR}"/mysql_install_db.log 1>&2
		die "Failed to run mysql_install_db. Please review /var/log/mysql/mysqld.err AND ${TMPDIR}/mysql_install_db.log"
	fi
	popd &>/dev/null
	[[ -f "${ROOT}/${MY_DATADIR}/mysql/user.frm" ]] \
	|| die "MySQL databases not installed"
	chown -R mysql:mysql "${ROOT}/${MY_DATADIR}" 2>/dev/null
	chmod 0750 "${ROOT}/${MY_DATADIR}" 2>/dev/null

	if mysql_version_is_at_least "4.1.3" ; then
		options="--skip-ndbcluster"

		# Filling timezones, see
		# http://dev.mysql.com/doc/mysql/en/time-zone-support.html
		"${ROOT}/usr/bin/mysql_tzinfo_to_sql" "${ROOT}/usr/share/zoneinfo" > "${sqltmp}" 2>/dev/null

		if [[ -r "${help_tables}" ]] ; then
			cat "${help_tables}" >> "${sqltmp}"
		fi
	fi

	local socket="${ROOT}/var/run/mysqld/mysqld${RANDOM}.sock"
	local pidfile="${ROOT}/var/run/mysqld/mysqld${RANDOM}.pid"
	local mysqld="${ROOT}/usr/sbin/mysqld \
		${options} \
		--user=mysql \
		--skip-grant-tables \
		--basedir=${ROOT}/usr \
		--datadir=${ROOT}/${MY_DATADIR} \
		--skip-innodb \
		--skip-bdb \
		--skip-networking \
		--max_allowed_packet=8M \
		--net_buffer_length=16K \
		--socket=${socket} \
		--pid-file=${pidfile}"
	${mysqld} &
	while ! [[ -S "${socket}" || "${maxtry}" -lt 1 ]] ; do
		maxtry=$((${maxtry}-1))
		echo -n "."
		sleep 1
	done

	# Do this from memory, as we don't want clear text passwords in temp files
	local sql="UPDATE mysql.user SET Password = PASSWORD('${pwd1}') WHERE USER='root'"
	"${ROOT}/usr/bin/mysql" \
		--socket=${socket} \
		-hlocalhost \
		-e "${sql}"

	einfo "Loading \"zoneinfo\", this step may require a few seconds ..."

	"${ROOT}/usr/bin/mysql" \
		--socket=${socket} \
		-hlocalhost \
		-uroot \
		-p"${pwd1}" \
		mysql < "${sqltmp}"

	# Stop the server and cleanup
	kill $(< "${pidfile}" )
	rm -f "${sqltmp}"
	einfo "Stopping the server ..."
	wait %1
	einfo "Done"
}

# @FUNCTION: mysql_pkg_postrm
# @DESCRIPTION:
# Remove mysql symlinks.
mysql_pkg_postrm() {
	: # mysql_lib_symlinks "${D}"
}